Cypress CY7C601xx, CY7C602xx manual High Sink, Open Drain, Output Enable, SPI Use, Pull Up Enable

Page 38
16.2.4 High Sink

CY7C601xx, CY7C602xx

16.2.4 High Sink

When set, the output sinks up to 50 mA. When clear, the output sinks up to 8 mA.

On the CY7C601xx, only the P3.7, P2.7, P0.1, and P0.0 have 50 mA sink drive capability. Other pins have 8 mA sink drive capability.

On the CY7C602xx, only the P1.7–P1.3 have 50 mA sink drive capability. Other pins have 8 mA sink drive capability.

16.2.5 Open Drain

When set, the output on the pin is determined by the Port Data Register. If the corresponding bit in the Port Data Register is set, the pin is in high impedance state; if it is clear, the pin is driven LOW.

When clear, the output is driven LOW or HIGH.

16.2.7 Output Enable

When set, the output driver of the pin is enabled. When clear, the output driver of the pin is disabled.

For pins with shared functions there are some special cases.

P0.0(CLKIN) and P0.1(CLKOUT) are not output enabled when the crystal oscillator is enabled. Output enables for these pins are overridden by XOSC Enable.

16.2.8 SPI Use

The P1.3(SSEL), P1.4(SCLK), P1.5(SMOSI), and P1.6(SMISO) pins are used for their dedicated functions or for GPIO. To enable the pin for GPIO, clear the corresponding SPI Use bit. The SPI function controls the output enable for its dedicated function pins when their GPIO enable bit is clear.

16.2.6 Pull Up Enable

When set the pin has a 7K pull up to VDD. When clear, the pull up is disabled.

3.3V Drive

Pull-Up Enable

Output Enable

Open Drain

Port Data

High Sink

Data In

TTL Threshold

Figure 16-1. GPIO Block Diagram

VREGVCC

VREG

VCC

 

 

 

 

RUP

Data Out

 

 

 

 

GPIO

 

 

PIN

VREG GND

VCC GND

 

16.2.9 P0.0/CLKIN Configuration

Table 16-6. P0.0/CLKIN Configuration (P00CR) [0x05] [R/W]

Bit #

7

6

5

4

3

2

1

0

Field

Reserved

Int Enable

Int Act Low

TTL Thresh

High Sink

Open Drain

Pull up Enable

Output Enable

Read/Write

–

R/W

R/W

R/W

R/W

R/W

R/W

R/W

Default

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

This pin is shared between the P0.0 GPIO use and the CLKIN pin for the external crystal oscillator. When the external oscillator is enabled the settings of this register are ignored.

The alternate function of the pin as the CLKIN is only available in the CY7C601xx. When the external oscillator is enabled (the XOSC Enable bit of the CLKIOCR Register is set—Table12-4), the GPIO function of the pin is disabled.

The 50 mA sink drive capability is only available in the CY7C601xx. In the CY7C602xx, only 8 mA sink drive capability is available on this pin regardless of the setting of the High Sink bit.

Document 38-16016 Rev. *E

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Contents CY7C601xx, CY7C602xx 1. Features2. Logic Block Diagram Cypress Semiconductor Corporation5. Conventions 3. Applications4. Introduction CY7C60223 Figure 6-1. Package Configurations Top View6. Pinouts 24-Pin PDIPTable 6-1. Pin Assignments CY7C601xx, CY7C602xx6.1 Pin Assignments NameTable 6-1. Pin Assignments continued Table 7-1. enCoRe II LV Register Summary Default7. Register Summary AddrTable 7-1. enCoRe II LV Register Summary continued 9.1 Flags Register 8. CPU Architecture9. CPU Registers Table 8-1. CPU Registers and Register Name9.1.2 Index Register 9.1.1 Accumulator RegisterTable 9-2. CPU Accumulator Register CPUA Table 9-3. CPU X Register CPUXTable 9-7. Source Immediate 9.2 Addressing Modes9.2.1 Source Immediate OpcodeExample 9.2.5 Destination IndexedTable 9-11. Destination Indexed 9.2.6 Destination Direct Source ImmediateTable 9-15. Source Indirect Post Increment 10. Instruction Set Summary9.2.9 Source Indirect Post Increment 9.2.10 Destination Indirect Post IncrementBytes Figure 11-1. Program Memory Space with Interrupt Vector Table 11. Memory Organization11.1 Flash Program Memory Organization 0x1FFF11.4 SROM 11.2 Data Memory Organization11.3 Flash Figure 11-2. Data Memory OrganizationTable 11-2. SROM Function Parameters 11.5.1 SWBootReset Function11.5 SROM Function Descriptions Variable NameTable 11-5. WriteBlock Parameters Settings11.5.3 WriteBlock Function 11.5.4 EraseBlock Function11.5.7 TableRead Function Table 11-8. ProtectBlock Parameters11.5.6 EraseAll Function Table 11-10. Table Read Parameters11.6 SROM Table Read Description Page 19 ofeg ti 12.1 Trim Values for the IOSCTR Register Table 12-1. Oscillator Trim Values vs. Voltage Settings12. Clocking Gain value for the register at location 0x38 3.3V =12.2 Clock Architecture Description 12.2.1 CPU ClockBit 71 Reserved Figure 12-1. CPU Clock Block DiagramTable 12-2. CPU Clock Configuration CPUCLKCR 0x30 R/W Table 12-3. OSC Control 0 OSCCR0 0x1E0 R/WCPU when Internal Sleep TimerSleep Timer Clock Table 12-3. OSC Control 0 OSCCR0 0x1E0 R/W continuedBit 75 Reserved Table 12-4. Clock IO Configuration CLKIOCR 0x32 R/W12.2.2 Interval Timer Clock ITMRCLK Figure 12-3. Timer Capture Block Diagram Figure 12-2. Programmable Interval Timer Block Diagram12.2.3 Timer Capture Clock TCAPCLK Table 12-5. Timer Clock Configuration TMRCLKCR 0x31 R/W Page 27 ofTable 12-6. IOSC Trim IOSCTR 0x34 R/W XGM Setting12.2.4 Internal Clock Trim Bit 40 GainTable 12-8. LPOSC Trim LPOSCTR 0x36 R/W 12.3 CPU Clock During Sleep Mode12.2.6 LPOSC Trim Bit 7 GIES 13. ResetTable 13-1. System Status and Control Register CPUSCR 0xFF R/W Bit 5 WDRSTable 13-2. Reset Watchdog Timer RESWDT 0xE3 W 13.1 Power On Reset13.2 Watchdog Timer Reset 14. Sleep ModeCPUCLK IOW SLEEP BRQ BRA PD 14.1.1 Low Power in Sleep Mode14.1 Sleep Sequence Figure 14-1. Sleep Timing14.2 Wakeup Sequence Figure 14-2. Wakeup TimingBit 76 Reserved Bit 54 PORLEV10 15. Low Voltage Detect ControlTable 15-1. Low Voltage Control Register LVDCR 0x1E3 R/W Bit 20 VM20Table 15-2. Voltage Monitor Comparators Register VLTCMP 0x1E4 R 15.1 POR Compare State15.2 ECO Trim Register Bit 72 Reserved Bit 1 LVD16.1.1 P0 Data 16. General Purpose IO Ports16.1 Port Data Registers Table 16-1. P0 Data Register P0DATA0x00 R/W16.1.3 P2 Data 16.2 GPIO Port Configuration16.2.1 Int Enable Table 16-3. P2 Data Register P2DATA 0x02 R/WFigure 16-1. GPIO Block Diagram 16.2.7 Output Enable16.2.6 Pull Up Enable 16.2.9 P0.0/CLKIN Configuration16.2.11 P0.2/INT0-P0.4/INT2 Configuration 16.2.10 P0.1/CLKOUT ConfigurationTable 16-7. P0.1/CLKOUT Configuration P01CR 0x06 R/W Table 16-10. P0.7 Configuration P07CR 0x0C R/W 16.2.12 P0.5/TIO0-P0.6/TIO1 Configuration16.2.13 P0.7 Configuration 16.2.14 P1.0 Configuration16.2.16 P1.2 Configuration 16.2.15 P1.1 ConfigurationTable 16-12. P1.1 Configuration P11CR 0x0E R/W Table 16-13. P1.2 Configuration P12CR 0x0F R/W16.2.19 P1.7 Configuration 16.2.18 P1.4-P1.6 Configuration SCLK, SMOSI, SMISOTable 16-15. P1.4-P1.6 Configuration P14CR-P16CR 0x11-0x13 R/W Table 16-16. P1.7 Configuration P17CR 0x14 R/W16.2.22 P4 Configuration 16.2.21 P3 ConfigurationTable 16-18. P3 Configuration P3CR 0x16 R/W Table 16-19. P4 Configuration P4CR 0x17 R/WFigure 17-1. SPI Block Diagram 17. Serial Peripheral Interface SPI17.1 SPI Data Register 17.2 SPI Configure RegisterTable 17-2. SPI Configure Register SPICR 0x3D R/W Table 17-1. SPI Data Register SPIDATA 0x3C R/WCPHA Table 17-3. SPI Mode Timing vs. LSB First, CPOL, and CPHADiagram CPOLFigure 18-1. 16-Bit Free Running Counter Block Diagram 18. Timer Registers17.3 SPI Interface Pins Table 18-1. Free Running Timer Low Order Byte FRTMRL 0x20 R/WTable 18-3. Timer Configuration TMRCR 0x2A R/W Table 18-2. Free Running Timer High Order Byte FRTMRH 0x21 R/WFigure 18-2. Time Capture Block Diagram 18.1.2 Time CaptureTable 18-6. Timer Capture 1 Rising TCAP1R 0x23 R/W Table 18-4. Capture Interrupt Enable TCAPINTE 0x2B R/WTable 18-5. Timer Capture 0 Rising TCAP0R 0x22 R/W Table 18-7. Timer Capture 0 Falling TCAP0F 0x24 R/WTable 18-10. Programmable Interval Timer Low PITMRL 0x26 R Table 18-8. Timer Capture 1 Falling TCAP1F 0x25 R/W18.1.3 Programmable Interval Timer Table 18-9. Capture Interrupt Status TCAPINTS 0x2C R/WTable 18-13. Programmable Interval Reload High PIRH 0x29 R/W Table 18-11. Programmable Interval Timer High PITMRH 0x27 RTable 18-12. Programmable Interval Reload Low PIRL 0x28 R/W Figure 18-3. Timer Functional Sequence Diagram Page 52 ofFigure 18-4. 16-Bit Free Running Counter Loading Timing Diagram Figure 18-5. Memory Mapped Registers Read and Write Timing Diagram19.1 Architectural Description Figure 19-1. Interrupt Controller Block Diagram19. Interrupt Controller Table 19-1. Interrupt Priorities, Address, and Name19.4 Interrupt Registers 19.2 Interrupt Processing19.3 Interrupt Latency Table 19-2. Interrupt Clear 0 INTCLR0 0xDA R/W19.4.2 Interrupt Mask Registers Table 19-3. Interrupt Clear 1 INTCLR1 0xDB R/WInterrupt Clear 2 INTCLR2 0xDC R/W Table 19-5. Interrupt Mask 3 INTMSK3 0xDE R/WPage 57 of Table 19-6. Interrupt Mask 2 INTMSK2 0xDF R/WTable 19-7. Interrupt Mask 1 INTMSK1 0xE1 R/W Table 19-9. Interrupt Vector Clear Register INTVC 0xE2 R/W Table 19-8. Interrupt Mask 0 INTMSK0 0xE0 R/W19.4.3 Interrupt Vector Clear Register Parameter 20.1 DC Characteristics20. Absolute Maximum Ratings ConditionsSPI Timing 20.2 AC CharacteristicsClock Figure 20-1. Clock TimingSCK CPOL=1 Figure 20-2. GPIO Timing DiagramSCK CPOL=0 MOSI MISOSS SCK CPOL=0 SCK CPOL=1 MOSIMISO MOSI MISO MSBSCK CPOL=0 SCK CPOL=1 21. Ordering Information22. Package Handling MOSI MSBFigure 23-2. 24-Pin 300-Mil PDIP P13 23. Package DiagramsFigure 23-1. 24-Pin 300-Mil SOIC S13 3. DIMENSIONS IN INCHESPage 65 of Figure 23-3. 24-Pin QSOP O241Figure 23-4. 28-Pin 5.3 mm Shrunk Small Outline Package O28 Page 66 of Figure 23-5. 40-Pin 600-Mil Molded DIP P17Figure 23-6. 48-Pin Shrunk Small Outline Package O48 Orig. of 24. Document History PageDocument Number SubmissionWorldwide Sales and Design Support Sales, Solutions, and Legal InformationPSoC Solutions Products
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