Silicon Laboratories C8051F340, C8051F341, C8051F342, C8051F343, C8051F344, C8051F345, C8051F346, C8051F347 C8051F340/1/2/3/4/5/6/7

C8051F340/1/2/3/4/5/6/7

34 Rev. 0.5

P1.0 46 26 D I/O or

A In Port 1.0. See Section 15 for a complete description of Port

P1.1 45 25 D I/O or

A In Port 1.1.

P1.2 44 24 D I/O or

A In Port 1.2.

P1.3 43 23 D I/O or

A In Port 1.3.

P1.4 42 22 D I/O or

A In Port 1.4.

P1.5 41 21 D I/O or

A In Port 1.5.

P1.6 40 20 D I/O or

A In Port 1.6.

P1.7 39 19 D I/O or

A In Port 1.7.

P2.0 38 18 D I/O or

A In Port 2.0. See Section 15 for a complete description of Port

P2.1 37 17 D I/O or

A In Port 2.1.

P2.2 36 16 D I/O or

A In Port 2.2.

P2.3 35 15 D I/O or

A In Port 2.3.

P2.4 34 14 D I/O or

A In Port 2.4.

P2.5 33 13 D I/O or

A In Port 2.5.

P2.6 32 12 D I/O or

A In Port 2.6.

P2.7 31 11 D I/O or

A In Port 2.7.

P3.0 30 -D I/O or

A In Port 3.0. See Section 15 for a complete description of Port

P3.1 29 -D I/O or

A In Port 3.1.

P3.2 28 -D I/O or

A In Port 3.2.

Table 4.1. Pin Definitions for the C8051F340/1/2/3/4/5/6/7 (Continued)

Name Pin Numbers Type Description

48-pin 32-pin

Contents

Main Full Speed USB Flash MCU Family C8051F340/1/2/3/4/5/6/7 WDT ANALOG PERIPHERALS 10-bit 200 ksps ADC 64/32 kB ISP FLASH 4/2 kB RAM POR Page C8051F340/1/2/3/4/5/6/7 Table Of Contents Page Page Page C8051F340/1/2/3/4/5/6/7 Page List of Figures and Tables Page Page Page List of Registers Page Page Page 1. System Overview Table 1.1. Product Selection Guide Figure 1.1. C8051F340/1/4/5 Block Diagram Analog Peripherals Digital Peripherals System Clock Setup USB Peripheral Figure 1.2. C8051F342/3/6/7 Block Diagram Analog Peripherals Digital Peripherals System Clock Setup USB Peripheral 1.1. CIP-51 Microcontroller Core 1.1.1. Fully 8051 Compatible 1.1.2. Improved Throughput 1.1.3. Additional Features Clocks to Execute Number of Instructions Figure 1.3. On-Chip Clock and Reset Reset Funnel Px.x Px.x Microcontroller Core Comparator 0 1.2. On-Chip Memory Figure 1.4. On-Chip Memory Map for 64kB Devices (C8051F340/2/4/6) PROGRAM/DATA MEMORY (FLASH) DATA MEMORY (RAM) INTERNAL DATA ADDRESS SPACE 1.3. Universal Serial Bus Controller Figure 1.5. USB Controller Block Diagram 1.4. Voltage Regulator 1.5. On-Chip Debug Circuitry 1.6. Programmable Digital I/O and Crossbar Figure 1.6. Digital Crossbar Diagram Digital Crossbar Priority Decoder *Note: P3.1-P3.7 and UART1 only available on 48-pin package 1.7. Serial Ports 1.8. Programmable Counter Array Port I/O Crossbar Figure 1.8. PCA Block Diagram ADC Figure 1.9. 10-Bit ADC Block Diagram 10-Bit SAR 1.10. Comparators CPTnMX CPTnMD Figure 1.10. Comparator0 Block Diagram CPTnCN 2. Absolute Maximum Ratings Tabl e 2.1. Absolute Maximum Ratings* 3. Global DC Electrical Characteristics Tabl e 3.1. Global DC Electrical Characteristics 40 to +85 C, 25 MHz System Clock unless otherwise specified. Page 4. Pinout and Package Definitions Tabl e 4.1. Pin Definitions for the C8051F340/1/2/3/4/5/6/7 Name Pin Numbers Typ e Description C8051F340/1/2/3/4/5/6/7 Table 4.1. Pin Definitions for the C8051F340/1/2/3/4/5/6/7 (Continued) Name Pin Numbers Type Description Table 4.1. Pin Definitions for the C8051F340/1/2/3/4/5/6/7 (Continued) Name Pin Numbers Type Description Figure 4.1. TQFP-48 Pinout Diagram (Top View) C8051F340/1/4/5 Top View Figure 4.2. TQFP-48 Package Diagram Table 4.2. TQFP-48 Package Dimensions Figure 4.3. LQFP-32 Pinout Diagram (Top View) C8051F342/3/6/7 Top View Page Page 5. 10-Bit ADC (ADC0) Figure 5.1. ADC0 Functional Block Diagram 10-Bit SAR ADC 5.1. Analog Multiplexer 5.2. Temperature Sensor Voltage Temperature Figure 5.2. VTEMP = (Slope x TempC) + Offset Figure 5.3. Temperature (degrees C) Error (degrees C) 5.3. Modes of Operation 5.3.1. Starting a Conversion Important Note About Using CNVSTR: 5.3.2. Tracking Modes B. ADC0 Timing for Internal Trigger Source Figure 5.4. 10-Bit ADC Track and Conversion Example Timing Time Requirements on page 47. A. ADC0 Timing for External Trigger Source 5.3.3. Settling Time Requirements Equation 5.1. ADC0 Settling Time Requirements Figure 5.5. ADC0 Equivalent Input Circuits t 2 SA ------- RTOTALCSAMPLE ln= SFR Definition 5.1. AMX0P: AMUX0 Positive Channel Select AMX0P4-0 ADC0 Positive Input (32-pin Package) ADC0 Positive Input (48-pin Package) SFR Definition 5.2. AMX0N: AMUX0 Negative Channel Select AMX0N4-0 ADC0 Negative Input (32-pin Package) ADC0 Negative Input (48-pin Package) SFR Definition 5.3. ADC0CF: ADC0 Configuration SFR Definition 5.4. ADC0H: ADC0 Data Word MSB SFR Definition 5.5. ADC0L: ADC0 Data Word LSB AD0SC SYSCLK CLK ----------------------1= C8051F340/1/2/3/4/5/6/7 SFR Definition 5.6. ADC0CN: ADC0 Control 5.4. Programmable Window Detector SFR Definition 5.7. ADC0GTH: ADC0 Greater-Than Data High Byte SFR Definition 5.8. ADC0GTL: ADC0 Greater-Than Data Low Byte Page 5.4.1. Window Detector In Single-Ended Mode Figure 5.6. ADC Window Compare Example: Right-Justified Single-Ended Data Figure 5.7. ADC Window Compare Example: Left-Justified Single-Ended Data 5.4.2. Window Detector In Differential Mode Figure 5.8. ADC Window Compare Example: Right-Justified Differential Data Figure 5.9. ADC Window Compare Example: Left-Justified Differential Data Tabl e 5.1. ADC0 Electrical Characteristics VDD = 3.0 V, VREF = 2.40 V, 40 to +85 C unless otherwise specified DC Accuracy Dynamic Performance (10 kHz sine-wave Single-ended input, 1 dB below Full Scale, 200 ksps) Conversion Rate 6. Voltage Reference Important Note About the VREF Pin: Figure 6.1. Voltage Reference Functional Block Diagram plexer on page 42 for details). The TEMPE bit in register REF0CN enables/disables the temperature SFR Definition 6.1. REF0CN: Reference Control Tabl e 6.1. Voltage Reference Electrical Characteristics VDD = 3.0 V; 40 to +85 C Unless Otherwise Specified Internal Reference (REFBE = 1) External Reference (REFBE = 0) 7. Comparators Important Note About Comparator Inputs: Figure 7.1. Comparator Functional Block Diagram CPTnCN CPTnMX CPTnMD + - Figure 7.2. Comparator Hysteresis Plot SFR Definition 7.1. CPT0CN: Comparator0 Control SFR Definition 7.2. CPT0MX: Comparator0 MUX Selection SFR Definition 7.3. CPT0MD: Comparator0 Mode Selection Mode CP0MD1 CP0MD0 CP0 Response Time* SFR Definition 7.4. CPT1CN: Comparator1 Control SFR Definition 7.5. CPT1MX: Comparator1 MUX Selection SFR Definition 7.6. CPT1MD: Comparator1 Mode Selection Mode CP1MD1 CP1MD0 CP1 Response Time* Power Supply 8. Voltage Regulator (REG0) 8.1. Regulator Mode Selection 8.2. VBUS Detection (USB0) on page 163), the VBUS signal should be connected to the VBUS pin. The VBSTAT bit (register Important Note: Figure 8.1. REG0 Configuration: USB Bus-Powered Figure 8.2. REG0 Configuration: USB Self-Powered Figure 8.3. REG0 Configuration: USB Self-Powered, Regulator Disabled Figure 8.4. REG0 Configuration: No USB Connection SFR Definition 8.1. REG0CN: Voltage Regulator Control 9. CIP-51 Microcontroller Figure 9.1. CIP-51 Block Diagram Performance Programming and Debugging Support 9.1. Instruction Set 9.1.1. Instruction and CPU Timing Clocks to Execute Number of Instructions 9.1.2. MOVX Instruction and Program Memory ory on page 109 for further details. Table 9.1. CIP-51 Instruction Set Summary Mnemonic Description Bytes Clock Arithmetic Operations Logical Operations Data Transfer Table 9.1. CIP-51 Instruction Set Summary (Continued) Mnemonic Description Bytes Clock Boolean Manipulation Program Branching Table 9.1. CIP-51 Instruction Set Summary (Continued) Mnemonic Description Bytes Clock Page 9.2. Memory Organization Figure 9.2. Memory Map 9.2.1. Program Memory PROGRAM/DATA MEMORY (FLASH) DATA MEMORY (RAM) C8051F340/1/2/3/4/5/6/7 9.2.2. Data Memory 9.2.3. General Purpose Registers 9.2.4. Bit Addressable Locations 9.2.5. Stack Table 9.2. Special Function Register (SFR) Memory Map Tabl e 9.3. Special Function Registers Page Table 9.3. Special Function Registers (Continued) 9.2.7. Register Descriptions SFR Definition 9.1. DPL: Data Pointer Low Byte SFR Definition 9.2. DPH: Data Pointer High Byte SFR Definition 9.3. SP: Stack Pointer SFR Definition 9.4. PSW: Program Status Word SFR Definition 9.5. ACC: Accumulator RS1 RS0 Register Bank Address SFR Definition 9.6. B: B Register 9.3. Interrupt Handler 9.3.1. MCU Interrupt Sources and Vectors 9.3.2. External Interrupts 15.1. Priority Crossbar Decoder on page 149 for complete details on configuring the Crossbar). 9.3.3. Interrupt Priorities 9.3.4. Interrupt Latency IT0 IN0PL /INT0 Interrupt IT1 IN1PL /INT1 Interrupt 9.3.5. Interrupt Register Descriptions Tabl e 9.4. Interrupt Summary SFR Definition 9.7. IE: Interrupt Enable SFR Definition 9.8. IP: Interrupt Priority SFR Definition 9.9. EIE1: Extended Interrupt Enable 1 SFR Definition 9.10. EIP1: Extended Interrupt Priority 1 SFR Definition 9.11. EIE2: Extended Interrupt Enable 2 SFR Definition 9.12. EIP2: Extended Interrupt Priority 2 SFR Definition 9.13. IT01CF: INT0/INT1 Configuration IN1SL20 /INT1 Port Pin IN0SL20 /INT0 Port Pin 9.4. Power Management Modes 9.4.1. Idle Mode Timer Reset on page 104 for more information on the use and configuration of the WDT. 9.4.2. Stop Mode SFR Definition 9.14. PCON: Power Control Page 10. Prefetch Engine SFR Definition 10.1. PFE0CN: Prefetch Engine Control Page 11. Reset Sources Figure 11.1. Reset Sources 11.1. Power-On Reset Figure 11.2. Power-On and VDD Monitor Reset Timing 11.2. Power-Fail Reset / VDD Monitor Important Note: SFR Definition 11.1. VDM0CN: VDD Monitor Control V DD monitor as a reset source before it has stabilized will generate a system reset. 11.3. External Reset 11.4. Missing Clock Detector Reset 11.5. Comparator0 Reset 11.6. PCA Watchdog Timer Reset 11.7. Flash Error Reset 11.8. Software Reset 11.9. USB Reset SFR Definition 11.2. RSTSRC: Reset Source Tabl e 11.1 . Reset Electrical Characteristics 40 to +85 C unless otherwise specified. Page 12. Flash Memory 12.1. Programming The Flash Memory 12.1.1.Flash Lock and Key Functions 12.1.2.Flash Erase Procedure 12.1.3.Flash Write Procedure 12.2. Non-volatile Data Storage 12.3. Security Options Table 12.1. Flash Electrical Characteristics Figure 12.1. Flash Program Memory Map and Security Byte Page SFR Definition 12.1. PSCTL: Program Store R/W Control SFR Definition 12.2. FLKEY: Flash Lock and Key SFR Definition 12.3. FLSCL: Flash Scale Page 13. External Data Memory Interface and On-Chip XRAM 13.1. Accessing XRAM 13.1.1.16-Bit MOVX Example 13.1.2.8-Bit MOVX Example 13.2. Accessing USB FIFO Space Important Note: The USB clock must be active when accessing FIFO space. Figure 13.1. USB FIFO Space and XRAM Memory Map with USBFAE set to 1 USB FIFO Space 13.3. Configuring the External Memory Interface 13.4. Port Configuration through Port 3) on page 147. SFR Definition 13.1. EMI0CN: External Memory Interface Control SFR Definition 13.2. EMI0CF: External Memory Configuration E M I F (Optional) E M I F (Optional) 13.6.1.Internal XRAM Only 13.6.2.Split Mode without Bank Select 13.6.3.Split Mode with Bank Select 13.6.4.External Only 13.7. Timing SFR Definition 13.3. EMI0TC: External Memory Timing Control 13.7.1.Non-multiplexed Mode Figure 13.5. Non-multiplexed 16-bit MOVX Timing 13.7.1.1.16-bit MOVX: EMI0CF[4:2] = 101, 110, or 111. 13.7.1.2.8-bit MOVX without Bank Select: EMI0CF[4:2] = 101 or 111. Figure 13.6. Non-multiplexed 8-bit MOVX without Bank Select Timing 13.7.1.3.8-bit MOVX with Bank Select: EMI0CF[4:2] = 110. Figure 13.7. Non-multiplexed 8-bit MOVX with Bank Select Timing 13.7.2.Multiplexed Mode Figure 13.8. Multiplexed 16-bit MOVX Timing 13.7.2.1.16-bit MOVX: EMI0CF[4:2] = 001, 010, or 011. 13.7.2.2.8-bit MOVX without Bank Select: EMI0CF[4:2] = 001 or 011. Figure 13.9. Multiplexed 8-bit MOVX without Bank Select Timing 13.7.2.3.8-bit MOVX with Bank Select: EMI0CF[4:2] = 010. Figure 13.10. Multiplexed 8-bit MOVX with Bank Select Timing Tabl e 13.1. AC Parameters for External Memory Interface Page 14. Oscillators CLKMUL OSCXCN Figure 14.1. Oscillator Diagram OSCICL OSCICN 14.1. Programmable Internal High-Frequency (H-F) Oscillator 14.1.1.Internal H-F Oscillator Suspend Mode tion 8.2 SFR Definition 14.1. OSCICN: Internal H-F Oscillator Control SFR Definition 14.2. OSCICL: Internal H-F Oscillator Calibration 14.2. Programmable Internal Low-Frequency (L-F) Oscillator 14.2.1.Calibrating the Internal L-F Oscillator SFR Definition 14.3. OSCLCN: Internal L-F Oscillator Control 14.3. External Oscillator Drive Circuit Important Note on External Oscillator Usage: 14.3.1.Clocking Timers Directly Through the External Oscillator 14.3.2.External Crystal Example Important Note on External Crystals: Page SFR Definition 14.4. OSCXCN: External Oscillator Control CRYSTAL MODE RC MODE f = 1.23(103) / (R x C), where C MODE 14.4. 4x Clock Multiplier SFR Definition 14.5. CLKMUL: Clock Multiplier Control MULSEL Selected Clock 14.5. System and USB Clock Selection 14.5.1.System Clock Selection 14.5.2.USB Clock Selection SFR Definition 14.6. CLKSEL: Clock Select USBCLK Selected Clock CLKSL Selected Clock Table 14.1. Oscillator Electrical Characteristics VDD = 2.7 to 3.6 V; 40 to +85 C unless otherwise specified Internal High-Frequency Oscillator (Using Factory-Calibrated Settings) Internal Low-Frequency Oscillator (Using Factory-Calibrated Settings) External USB Clock Requirements Page 15. Port Input/Output Figure 15.1. Port I/O Functional Block Diagram (Port 0 through Port 3) Digital Crossbar Priority Decoder *Note: P3.1-P3.7 and UART1 only available on 48-pin package Figure 15.2. Port I/O Cell Block Diagram 15.1. Priority Crossbar Decoder Figure 15.3. Crossbar Priority Decoder with No Pins Skipped Important Note on Crossbar Configuration: Figure 15.4. Crossbar Priority Decoder with Crystal Pins Skipped Important Note: 15.2. Port I/O Initialization Important Note: SFR Definition 15.1. XBR0: Port I/O Crossbar Register 0 SFR Definition 15.2. XBR1: Port I/O Crossbar Register 1 SFR Definition 15.3. XBR2: Port I/O Crossbar Register 2 15.3. General Purpose Port I/O SFR Definition 15.4. P0: Port0 Latch SFR Definition 15.5. P0MDIN: Port0 Input Mode SFR Definition 15.6. P0MDOUT: Port0 Output Mode SFR Definition 15.7. P0SKIP: Port0 Skip SFR Definition 15.8. P1: Port1 Latch SFR Definition 15.9. P1MDIN: Port1 Input Mode SFR Definition 15.10. P1MDOUT: Port1 Output Mode SFR Definition 15.11. P1SKIP: Port1 Skip SFR Definition 15.12. P2: Port2 Latch SFR Definition 15.13. P2MDIN: Port2 Input Mode SFR Definition 15.14. P2MDOUT: Port2 Output Mode SFR Definition 15.15. P2SKIP: Port2 Skip SFR Definition 15.16. P3: Port3 Latch SFR Definition 15.17. P3MDIN: Port3 Input Mode SFR Definition 15.18. P3MDOUT: Port3 Output Mode SFR Definition 15.19. P3SKIP: Port3 Skip SFR Definition 15.20. P4: Port4 Latch SFR Definition 15.21. P4MDIN: Port4 Input Mode SFR Definition 15.22. P4MDOUT: Port4 Output Mode VDD = 2.7 to 3.6 V, 40 to +85 C unless otherwise specified Parameters Conditions Min Typ Max Units Rev. 0.5 163 16. Universal Serial Bus Controller (USB0) *Note: The C8051 F340/1/2/3/4/5/6/7 cannot be used as a USB Host device. Figure 16.1. USB0 Block Diagram 16.1. Endpoint Addressing 16.2. USB Transceiver Important Note: The USB clock should be active before the Transceiver is enabled. Tabl e 16.1. Endpoint Addressing Scheme Endpoint Associated Pipes USB Protocol Address SFR Definition 16.1. USB0XCN: USB0 Transceiver Control PHYTST[1:0] Mode D+ D 16.3. USB Register Access Important Note: The USB clock must be active when accessing USB registers. Figure 16.2. USB0 Register Access Scheme SFR Definition 16.2. USB0ADR: USB0 Indirect Address SFR Definition 16.3. USB0DAT: USB0 Data USB Register Definition 16.4. INDEX: USB0 Endpoint Index Table 16.2. USB0 Controller Registers USB Register Name USB Register Address Description Page Number Interrupt Registers Common Registers 16.4. USB Clock Configuration USB Register Definition 16.5. CLKREC: Clock Recovery Control Note: Communication Speed USB Clock 4x Clock Multiplier Input 16.5. FIFO Management Figure 16.3. USB FIFO Allocation 16.5.1.FIFO Split Mode 16.5.2.FIFO Double Buffering USB Register Definition 16.6. FIFOn: USB0 Endpoint FIFO Access 16.5.1.FIFO Access Table 16.3. FIFO Configurations ble Buffer Disabled / Enabled) Maximum OUT Packet Size Enabled? Maximum IN Packet Size (Dou- 16.6. Function Addressing USB Register Definition 16.7. FADDR: USB0 Function Address 16.7. Function Configuration and Control USB Reset: Suspend Mode: Resume Signaling: ISO Update: USB Enable: USB Register Definition 16.8. POWER: USB0 Power USB Register Definition 16.9. FRAMEL: USB0 Frame Number Low USB Register Definition 16.10. FRAMEH: USB0 Frame Number High Important Note: Reading a USB interrupt flag register resets all flags in that register to 0. 16.8. Interrupts USB Register Definition 16.11. IN1INT: USB0 IN Endpoint Interrupt USB Register Definition 16.12. OUT1INT: USB0 Out Endpoint Interrupt USB Register Definition 16.13. CMINT: USB0 Common Interrupt USB Register Definition 16.14. IN1IE: USB0 IN Endpoint Interrupt Enable USB Register Definition 16.15. OUT1IE: USB0 Out Endpoint Interrupt Enable USB Register Definition 16.16. CMIE: USB0 Common Interrupt Enable 16.9. The Serial Interface Engine 16.10. Endpoint0 16.10.1.Endpoint0 SETUP Transactions 16.10.2.Endpoint0 IN Transactions 16.10.3.Endpoint0 OUT Transactions USB Register Definition 16.17. E0CSR: USB0 Endpoint0 Control Write: Write: USB Register Definition 16.18. E0CNT: USB0 Endpoint 0 Data Count 16.11. Configuring Endpoints1-3 16.12. Controlling Endpoints1-3 IN 16.12.1.Endpoints1-3 IN Interrupt or Bulk Mode 16.12.2.Endpoints1-3 IN Isochronous Mode USB Register Definition 16.19. EINCSRL: USB0 IN Endpoint Control Low Byte Write: USB Register Definition 16.20. EINCSRH: USB0 IN Endpoint Control High Byte 16.13. Controlling Endpoints1-3 OUT 16.13.1.Endpoints1-3 OUT Interrupt or Bulk Mode 16.13.2.Endpoints1-3 OUT Isochronous Mode USB Register Definition 16.21. EOUTCSRL: USB0 OUT Endpoint Control Low Byte Write: USB Register Definition 16.22. EOUTCSRH: USB0 OUT Endpoint Control High Byte USB Register Definition 16.23. EOUTCNTL: USB0 OUT Endpoint Count Low USB Register Definition 16.24. EOUTCNTH: USB0 OUT Endpoint Count High Receiver Page 17. SMBus Figure 17.1. SMBus Block Diagram 17.1. Supporting Documents 17.2. SMBus Configuration SCL Master Device Slave Device 2 Device 1 Slave VDD = 3V VDD = 5V VDD = 3V SD Figure 17.3. SMBus Transaction 17.3.1.Arbitration 17.3.2.Clock Low Extension 17.3.3.SCL Low Timeout 17.3.4.SCL High (SMBus Free) Timeout 17.4. Using the SMBus 17.4.2. SMB0CN Control Register on page 201; Table 17.4 provides a quick SMB0CN decoding refer- Page Page Figure 17.4. Typical SMBus SCL Generation Tabl e 17.2. Minimum SDA Setup and Hold Times EXTHOLD Minimum SDA Setup Time Minimum SDA Hold Time SFR Definition 17.1. SMB0CF: SMBus Clock/Configuration SMBCS1 SMBCS0 SMBus Clock Source 17.4.2.SMB0CN Control Register Important Note About the SI Bit: SFR Definition 17.2. SMB0CN: SMBus Control Tabl e 17.3. Sources for Hardware Changes to SMB0CN Bit Set by Hardware When: Cleared by Hardware When: 17.4.3.Data Register SFR Definition 17.3. SMB0DAT: SMBus Data 17.5. SMBus Transfer Modes 17.5.1.Master Transmitter Mode Figure 17.5. Typical Master Transmitter Sequence 17.5.2.Master Receiver Mode Figure 17.6. Typical Master Receiver Sequence 17.5.3.Slave Receiver Mode Figure 17.7. Typical Slave Receiver Sequence 17.5.4.Slave Transmitter Mode Figure 17.8. Typical Slave Transmitter Sequence 17.6. SMBus Status Decoding Tabl e 17.4. SMBus Status Decoding Values Read Current SMbus State Typical Response Options Values Written Table 17.4. SMBus Status Decoding (Continued) Values Read Current SMbus State Typical Response Options Values Written 18. UART0 Figure 18.1. UART0 Block Diagram SFR Bus Port I/O SFR Bus Page Figure 18.3. UART Interconnect Diagram OR 18.2.1.8-Bit UART Figure 18.4. 8-Bit UART Timing Diagram 18.2.2.9-Bit UART Figure 18.5. 9-Bit UART Timing Diagram 18.3. Multiprocessor Communications Page SFR Definition 18.1. SCON0: Serial Port 0 Control SFR Definition 18.2. SBUF0: Serial (UART0) Port Data Buffer Page 19. UART1 (C8051F340/1/4/5 Only) Figure 19.1. UART1 Block Diagram Page 19.2. Data Format Optional N bits; N = 5, 6, 7, or 8 N bits; N = 5, 6, 7, or 8 Figure 19.4. UART1 Timing With Extra Bit 19.3. Configuration and Operation OR Figure 19.5. Typical UART Interconnect Diagram 19.3.1.Data Transmission 19.3.2.Data Reception Master Device Slave Slave SFR Definition 19.1. SCON1: UART1 Control SFR Definition 19.2. SMOD1: UART1 Mode SFR Definition 19.3. SBUF1: UART1 Data Buffer SFR Definition 19.4. SBCON1: UART1 Baud Rate Generator Control SFR Definition 19.5. SBRLH1: UART1 Baud Rate Generator High Byte SFR Definition 19.6. SBRLL1: UART1 Baud Rate Generator Low Byte Page 20. Enhanced Serial Peripheral Interface (SPI0) SPI CONTROL LOGIC SFR Bus Figure 20.1. SPI Block Diagram SFR Bus 20.1. Signal Descriptions 20.1.1.Master Out, Slave In (MOSI) 20.1.2.Master In, Slave Out (MISO) 20.1.3.Serial Clock (SCK) 20.1.4.Slave Select (NSS) 20.2. SPI0 Master Mode Operation Figure 20.2. Multiple-Master Mode Connection Diagram Device 1 Device 2 Figure 20.3. 3-Wire Single Master and Slave Mode Connection Diagram Figure 20.4. 4-Wire Single Master Mode and Slave Mode Connection Diagram 20.3. SPI0 Slave Mode Operation 20.4. SPI0 Interrupt Sources 20.5. Serial Clock Timing Figure 20.5. Master Mode Data/Clock Timing Figure 20.6. Slave Mode Data/Clock Timing (CKPHA = 0) Figure 20.7. Slave Mode Data/Clock Timing (CKPHA = 1) 20.6. SPI Special Function Registers SFR Definition 20.1. SPI0CFG: SPI0 Configuration SFR Definition 20.2. SPI0CN: SPI0 Control Slave Mode Operation on page 233 Page Figure 20.8. SPI Master Timing (CKPHA = 0) Figure 20.9. SPI Master Timing (CKPHA = 1) Figure 20.10. SPI Slave Timing (CKPHA = 0) Figure 20.11. SPI Slave Timing (CKPHA = 1) Tabl e 20.1. SPI Slave Timing Parameters Page 21. Timers 21.1. Timer 0 and Timer 1 21.1.1.Mode 0: 13-bit Counter/Timer Timer 0 and Timer 1 Modes: Timer 2 Modes: Timer 3 Modes: Pre-scaled Clock Figure 21.1. T0 Mode 0 Block Diagram 21.1.2.Mode 1: 16-bit Counter/Timer TR0 GATE0 /INT0 Counter/Timer 0 X X Disabled 1 0 X Enabled 1 1 0 Disabled 1 1 1 Enabled X = Don't Care TL0 (5 bits) TH0 Figure 21.2. T0 Mode 2 Block Diagram /INT0 Pre-scaled Clock SYSCLK TCON Figure 21.3. T0 Mode 3 Block Diagram /INT0 SYSCLK TCON TL0 (8 bits) SFR Definition 21.1. TCON: Timer Control SFR Definition 21.2. TMOD: Timer Mode T1M1 T1M0 Mode T0M1 T0M0 Mode SFR Definition 21.3. CKCON: Clock Control SCA1 SCA0 Prescaled Clock SFR Definition 21.4. TL0: Timer 0 Low Byte SFR Definition 21.5. TL1: Timer 1 Low Byte SFR Definition 21.7. TH1: Timer 1 High Byte SFR Definition 21.6. TH0: Timer 0 High Byte 21.2. Timer 2 21.2.1.16-bit Timer with Auto-Reload Figure 21.4. Timer 2 16-Bit Mode Block Diagram 21.2.2.8-bit Timers with Auto-Reload Figure 21.5. Timer 2 8-Bit Mode Block Diagram T2MH T2XCLK TMR2H Clock Source T2ML T2XCLK TMR2L Clock Source 21.2.3.Timer 2 Capture Modes: USB Start-of-Frame or LFO Falling Edge Figure 21.6. Timer 2 Capture Mode (T2SPLIT = 0) TMR2RLL TMR2RLH External Clock / 8 SYSCLK / 12 SYSCLK TMR2L TMR2H Figure 21.7. Timer 2 Capture Mode (T2SPLIT = 1) SFR Definition 21.8. TMR2CN: Timer 2 Control SFR Definition 21.9. TMR2RLL: Timer 2 Reload Register Low Byte SFR Definition 21.10. TMR2RLH: Timer 2 Reload Register High Byte SFR Definition 21.12. TMR2H Timer 2 High Byte SFR Definition 21.11. TMR2L: Timer 2 Low Byte 21.3. Timer 3 21.3.1.16-bit Timer with Auto-Reload Figure 21.8. Timer 3 16-Bit Mode Block Diagram 21.3.2.8-bit Timers with Auto-Reload Figure 21.9. Timer 3 8-Bit Mode Block Diagram T3MH T3XCLK TMR3H Clock Source T3ML T3XCLK TMR3L Clock Source 21.3.3.USB Start-of-Frame Capture Figure 21.10. Timer 3 Capture Mode (T3SPLIT = 0) TMR3RLL TMR3RLH External Clock / 8 SYSCLK / 12 SYSCLK TMR3L TMR3H Figure 21.11. Timer 3 Capture Mode (T3SPLIT = 1) SFR Definition 21.13. TMR3CN: Timer 3 Control SFR Definition 21.14. TMR3RLL: Timer 3 Reload Register Low Byte SFR Definition 21.15. TMR3RLH: Timer 3 Reload Register High Byte SFR Definition 21.17. TMR3H Timer 3 High Byte SFR Definition 21.16. TMR3L: Timer 3 Low Byte 22. Programmable Counter Array (PCA0) Port I/O Crossbar Figure 22.1. PCA Block Diagram Important Note: 22.1. PCA Counter/Timer Reading the PCA0L Register first guarantees an accurate reading of the entire 16-bit PCA0 counter. Figure 22.2. PCA Counter/Timer Block Diagram Tabl e 22.1. PCA Timebase Input Options CPS2 CPS1 CPS0 Timebase 22.2. Capture/Compare Modules PCA0CPMn X X 10000X Figure 22.3. PCA Interrupt Block Diagram Tabl e 22.2. PCA0CPM Register Settings for PCA Capture/Compare Modules Figure 22.4. PCA Capture Mode Diagram PCA0CPLn CrossbarPort I/O PCA0H PCA0CPHn PCA0CPMn Figure 22.5. PCA Software Timer Mode Diagram PCA0L 16-bit Comparator PCA0H PCA0CPHn PCA0CPLn Figure 22.6. PCA High Speed Output Mode Diagram Crossbar Port I/O PCA0L 16-bit Comparator PCA0H PCA0CPHn Equation 22.1. Square Wave Frequency Output F Figure 22.7. PCA Frequency Output Mode F 2PCA0CPHn ----------------------------------------- Equation 22.2. 8-Bit PWM Duty Cycle Figure 22.8. PCA 8-Bit PWM Mode Diagram DutyCycle 256 PCA0CPHn() 256 --------------------------------------------------- 8-bit Comparator PCA0L Equation 22.3. 16-Bit PWM Duty Cycle Figure 22.9. PCA 16-Bit PWM Mode DutyCycle 65536 PCA0CPn() 65536 ----------------------------------------------------- PCA0CPLnPCA0CPHn 22.3. Watchdog Timer Mode reset. Writes to some PCA registers are restricted while the Watchdog Timer is enabled. 22.3.1.Watchdog Timer Operation Figure 22.10. PCA Module 4 with Watchdog Timer Enabled Equation 22.4. Watchdog Timer Offset in PCA Clocks Offset 256 PCA0CPL4()256 PCA0L()+= 22.3.2.Watchdog Timer Usage Tabl e 22.3. Watchdog Timer Timeout Intervals1 System Clock (Hz) PCA0CPL4 Timeout Interval (ms) 22.4. Register Descriptions for PCA SFR Definition 22.1. PCA0CN: PCA Control SFR Definition 22.2. PCA0MD: PCA Mode CPS2 CPS1 CPS0 Timebase SFR Definition 22.3. PCA0CPMn: PCA Capture/Compare Mode SFR Definition 22.4. PCA0L: PCA Counter/Timer Low Byte SFR Definition 22.5. PCA0H: PCA Counter/Timer High Byte SFR Definition 22.6. PCA0CPLn: PCA Capture Module Low Byte SFR Definition 22.7. PCA0CPHn: PCA Capture Module High Byte 23. C2 Interface 23.1. C2 Interface Registers C2 Register Definition 23.2. DEVICEID: C2 Device ID C2 Register Definition 23.1. C2ADD: C2 Address Address Description C2 Register Definition 23.3. REVID: C2 Revision ID C2 Register Definition 23.4. FPCTL: C2 Flash Programming Control C2 Register Definition 23.5. FPDAT: C2 Flash Programming Data Code Command 23.2. C2 Pin Sharing Figure 23.1. Typical C2 Pin Sharing CONTACT INFORMATION

Silicon Laboratories C8051F340/1/2/3/4/5/6/7

Models: C8051F340 C8051F341 C8051F342 C8051F343 C8051F344 C8051F345 C8051F346 C8051F347

Table 4.1. Pin Definitions for the C8051F340/1/2/3/4/5/6/7 (Continued)

Name Pin Numbers Type Description