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IBM EM78P312N manual Bit Microcontroller, 2 Operating Registers

Models: EM78P312N

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EM78P312N

8-Bit Microcontroller

5.2 Operating Registers

	Register	Register	Register	Register
	Bank 0	Bank 1	Bank 2	Bank 3
Address
00	R0/ IAR
01	R1/ TCC
02	R2/ PC
03	R3/ SR
04	R4/ RSR	R3 (7, 6) = (0, 1)	R3 (7, 6) = (1, 0)	R3 (7, ) = (1, 1)
04	R4/ RSR
05	SCR	TC3CR	URC1	SPIC1
06	Port 6	TC3DA	URC2	SPIC2
07	Port 7	TC3DB	URS	SPID
08	Port 8	TC2CR/ ADDL	URRD	Reserved
09	Port 9	TC2DH	URTD	Reserved
0A	Reserved	TC2DL	Reserved	PHC1
0B	TC4CR	ADCR	Reserved	PLC1
0C	TC4D	ADIC	Reserved	PHC2
0D	ISFR0	ADDH	Reserved	PLC2
0E	ISFR1	TBKTC	Reserved	Reserved
0F	ISFR2	Reserved	Reserved	Reserved
10	16 Byte
:	16 Byte
:	Common Register
1F
20	Bank 0	Bank 1
20	R4 (7, 6) = (0, 0)	R4 (7, 6) = (0, 1)
:	32 Byte	32 Byte
3F	32 Byte	32 Byte
3F	Common Register	Common Register
	Common Register	Common Register

Fig. 5-2 Operating Registers

Control

Reserved

IOC6

IOC7

IOC8

IOC9

Reserved

INTCR

ADOSCR

Reserved

IMR1

IMR2

4 •	Product Specification (V1.0) 10.03.2006

(This specification is subject to change without further notice)

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IBM EM78P312N manual Bit Microcontroller, 2 Operating Registers

Contents

Green Product Specification EM78P312N8-BIT Microcontroller ELAN MICROELECTRONICS CORPAll Rights Reserved ELAN MICROELECTRONICS CORPORATIONCopyright 2006 by ELAN Microelectronics Corporation Contents FeaturesGeneral Description Pin AssignmentSpecification Revision History APPENDIX2 Features 1 General DescriptionPin Assignment EM78P312NPin Description SymbolEM78P312N 8-Bit Microcontroller5.1 Functional Block Diagram 5 Function DescriptionFig. 5-1 Functional Block Diagram This specification is subject to change without further notice5.2 Operating Registers This specification is subject to change without further noticeEM78P312N 8-Bit MicrocontrollerEM78P312N 8-Bit Microcontroller R0 Indirect Addressing RegisterR1 Time Clock /Counter R2 Program Counter & StackEM78P312N 8-Bit MicrocontrollerUser Memory Space R3 Status RegisterEM78P312N 8-Bit MicrocontrollerBit 0 C Carry flag R4 RAM Select Register R5 System Control RegisterRB Timer/Counter 4 Control Register Bit 7 ~ Bit 6 TC4FF1 ~ TC4FF0 Timer/Counter 4 flip-flop controlEM78P312N 8-Bit Microcontroller R6 Port 6 I/O Data RegisterBit 4 ~ Bit 2 TC4CK2 ~ TC4CK 0 Timer/Counter 4 Clock Source Select RC Timer 4 Data BufferEM78P312N 8-Bit MicrocontrollerRFInterrupt Status Flag Register EM78P312N8-Bit Microcontroller RE Interrupt Status Flag Register Bank 1 R5 TC3CR Timer/Counter 3 Control Register Bit 5 ~ Bit 4 TC3CK1 ~ TC3CK0 Timer/Counter 3 Clock Source SelectTC3M = “1” Capture mode Bank 1 R6 TC3DA Timer 3 Data Buffer A Bank 1 R7 TC3DB Timer 3 Data Buffer BBit 2 ~ Bit 0 TC2CK2 ~ TC2CK0 Timer/Counter 2 Clock Source Select Bank 1 R9 TC2DH Timer 2 Data Buffer High ByteBank 1 RA TC2DL Timer 2 Data Buffer Low Byte TC2M Timer/Counter 2 mode selectADP = “0” Power on ADP = “1” Power down Bit 7 ~ Bit 0 ADE7 ~ ADE0 AD input pin enable controlEM78P312N 8-Bit MicrocontrollerTEN = “0” Disable TEN = “1” Enable TBTEN = “0” Disable TBTEN = “1” EnableBit 2 ~ Bit 0 TBTCK2 ~ TBTCK0 Time Base Timer Clock Source Select EM78P312NTXE = “0” Disable TXE = “1” Enable EM78P312N8-Bit Microcontroller Bit 4 ~ Bit 2 BRATE2 ~ BRATE1 Transmit Baud Rate SelectPRE = “0” Disable PRE = “1” Enable Bit 4 PRERR Parity error flag Bit 0 RXE Enable receiving RXE = “0” Disable RXE = “1” EnableEM78P312N 8-Bit MicrocontrollerEM78P312N 8-Bit MicrocontrollerBit 5 ~ Bit 3 BRS0 ~ BRS2 SPI Clock Source Select EDS = “0” Rising edge EDS = “1” Falling edgeEM78P312N 8-Bit MicrocontrollerBit 2 ~ Bit 1 SPIM1 ~ SPIM0 SPI Transfer Mode Select Bank5.3 Special Purpose Registers PHE7x = “0” Enable P7x pull highPHE7x = “1” Disable P7x pull high WDTE = “0” Disable WDTE = “1” EnableBit 6 INT0EN INT0 enable control INT0EN = “0” General I/O EM78P312N8-Bit Microcontroller Bit 2 PSR2 ~ Bit 0 PSR0 TCC prescaler bits IOC6 ~ IOC9 − I/O Port Control RegisterEM78P312N 8-Bit MicrocontrollerADOSCR − AD Offset Control Register Address 0Ch Bit 5 ~ Bit 3 VOF2 ~ VOF0 Offset voltage bitsBit 1 SPIE SPI Interrupt enable bit EM78P312N8-Bit Microcontroller IMR2 − Interrupt Mask Register 2 Address 0Fh8-Bit Microcontroller 5.4 CPU Operation ModeEM78P312N 5.5 AD Converter EM78P312N8-Bit Microcontroller Table 4. Wake-up MethodsEM78P312N 8-Bit MicrocontrollerADC Data Register A/D Sampling Time5.6 Time Base Timer and Keytone Generator Fig. 5-6 Tone Output Pin ConfigurationFig. 5-7 Tone Output Pin Timing Chart EM78P312NFig. 5-8 TBT Configuration Fig. 5-9 Time Base Timer Timing ChartEM78P312N 8-Bit Microcontroller5.7 UART Universal Asynchronous Receiver/Transmitter Fig. 5-10 Function Block DiagramEM78P312N 8-Bit Microcontroller5.7.1 UART Mode 5.7.2 TransmittingEM78P312N 8-Bit Microcontroller5.7.3 Receiving 5.7.4 Baud Rate GeneratorEM78P312N 8-Bit Microcontroller5.8 SPI Serial Peripheral Interface Fig. 5-13 SPI Block DiagramThis specification is subject to change without further notice EM78P312N5.8.2 Shift Direction and Sample Phase 5.8.1 Serial Clock5.8.3 Transfer Mode EM78P312Nc 8-bit Transmit/Receive Mode EM78P312N8-Bit Microcontroller b 8-bit Receive Mode EM78P312N 8-Bit Microcontrollerd Multiple Device Connect /SS SCK pin5.9 Timer/Counter Registers for Timer/Counter 2 CircuitFig. 5-18 Configuration of Timer/Counter EM78P312N5.9.1 Timer Mode 5.9.2 Counter Mode5.9.3 Window Mode EM78P312N5.10 Timer/Counter Registers for Timer/Counter 3 CircuitFig. 5-21 Window Mode Timing Chart EM78P312N5.10.1 Timer Mode 5.10.2 Counter Mode5.10.3 Capture Mode EM78P312N8-Bit Microcontroller 5.11 Timer/CounterEM78P312N 5.11.1 Timer Mode 5.11.2 Counter Mode5.11.3 PDO Mode EM78P312N5.12 TCC/WDT & Prescaler 5.11.4 PWM ModeEM78P312N 8-Bit Microcontroller5.14 Reset and Wake-up 5.14.1 Reset5.13 I/O Ports EM78P312N5.14.2 Wake-up from Sleep Mode 5.14.3 Wake-up from Idle ModeEM78P312N 8-Bit MicrocontrollerReset Type This specification is subject to change without further noticeEM78P312N 8-Bit MicrocontrollerReset Type This specification is subject to change without further noticeEM78P312N 8-Bit Microcontroller Register BankReset Type This specification is subject to change without further noticeEM78P312N 8-Bit Microcontroller Register BankReset Type Reset TypeThis specification is subject to change without further notice EM78P312N8-Bit Microcontroller General Purpose Registers 5.14.4 The Status of RST, T, and P of the Status RegisterEM78P312N 8-Bit Microcontroller 5.15 InterruptEM78P312N 5.16 Oscillator 5.16.1 Oscillator Modes5.16.2 Crystal Oscillator/Ceramic Resonators Crystal EM78P312NEM78P312N 8-Bit MicrocontrollerOSCI XTAL5.16.3 External RC Oscillator Mode EM78P312N8-Bit Microcontroller Crystal/Resonator-Parallel Mode Circuit5.17 Code Option Register 5.17.1 Code Option Register WordENWDTB = “0” Enable ENWDTB = “1” Disable EM78P312N5.18 Power-on Considerations 5.18.1 External Power-on Reset Circuit5.17.2 Customer ID Register HLP = “0” Low power HLP = “1” High power5.18.2 Residue-Voltage Protection RESETEM78P312N 8-Bit Microcontroller8-Bit Microcontroller 5.19 Instruction SetEM78P312N EM78P312N 8-Bit Microcontroller6 Absolute Maximum Ratings 6.1 Absolute Maximum Ratings6.2 Recommended Operating Conditions EM78P312N7 Electrical Characteristics 7.1 DC Electrical CharacteristicsEM78P312N 8-Bit MicrocontrollerTa= 25 C, VDD= 3.0V ± 5%, VSS= EM78P312N8-Bit Microcontroller EM78P312N 8-Bit Microcontroller7.2 AC Electrical Characteristic EM78P312N8-Bit Microcontroller Ta=- 40C ~ 85 C, VDD=5V ± 5%, VSS=0V7.3 Timing Diagram RESET Timing CLK=0This specification is subject to change without further notice EM78P312NAPPENDIX A Package Types EM78P312N8-Bit Microcontroller OTP MCU