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IBM EM78P312N Bit Microcontroller, ~ Bit 6 ADD1 ~ ADD0 AD low 2-bit data buffer, TC2S = “1” Start

Models: EM78P312N

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~ Bit 6 ( ADD1 ~ ADD0 ) : AD low 2-bit data buffer

EM78P312N

8-Bit Microcontroller

Bank 1 R8 TC2CR/ ADDL (Timer/Counter 2 Control Register, AD Low 2 bits Data Buffer)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

ADD1

ADD0

0

TC2M

TC2S

TC2CK2

TC2CK1

TC2CK0

Bit 7

~ Bit 6 ( ADD1 ~ ADD0 ) : AD low 2-bit data buffer

Bit 4

( TC2M ) : Timer/Counter 2 mode select

TC2M = “0” : Timer/counter mode

TC2M = “1” : Window mode

Bit 3

( TC2S ) : Timer/Counter 2 start control

TC2S = “0” : Stop and counter clear

TC2S = “1” : Start

Bit 2 ~ Bit 0 ( TC2CK2 ~ TC2CK0 ) : Timer/Counter 2 Clock Source Select

TC2CK2		TC2CK1		TC2CK0		Clock Source		Resolution		Max. Time
TC2CK2		TC2CK1		TC2CK0		( Normal, Idle )		( Fc=8M )		( Fc=8M )
						( Normal, Idle )		( Fc=8M )		( Fc=8M )
0		0		0		Fc/223		1.05s		19.1h
0		0		1		Fc/213		1.02ms		1.1min
0		1		0		Fc/28		32μs		2.1s
0		1		1		Fc/23		1μs		65.5ms
1		0		0		Fc		125ns		7.9ms
1		0		1		-		-		-
1		1		0		-		-		-

1		1		1		External clock (TC2 pin)

Bank 1 R9 TC2DH (Timer 2 Data Buffer High Byte)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

TC2D15 TC2D14 TC2D13 TC2D12 TC2D11 TC2D10 TC2D9

TC2D8

Bit 7 ~ Bit 0 ( TC2D15 ~ TC2D8 ) : 16-bit Timer/Counter 2 data buffer high byte.

Bank 1 RA TC2DL (Timer 2 Data Buffer Low Byte)

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

TC2D7

TC2D6

TC2D5

TC2D4

TC2D3

TC2D2

TC2D1

TC2D0

Bit 7 ~ Bit 0 ( TC2D7 ~ TC2D0 ) : 16-bit Timer/Counter 2 data buffer low byte.

Bank 1 RB ADCR (AD Control Register)

Bit 7		Bit 6		Bit 5		Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
ADREF		ADRUN		ADCK1		ADCK0	ADP	ADIS2	ADIS1	ADIS0

Bit 7 ( ADREF ) : AD reference voltage input select.

ADREF = “0” : Internal VDD, P97 is used as IO.

ADREF = “1” : External reference pin, P97 is used as reference input pin.

12 •	Product Specification (V1.0) 10.03.2006

(This specification is subject to change without further notice)

Image 16

IBM EM78P312N Bit Microcontroller, ~ Bit 6 ADD1 ~ ADD0 AD low 2-bit data buffer, TC2M = “1” Window mode, TC2S = “1” Start

Contents

Green Product Specification EM78P312N8-BIT Microcontroller ELAN MICROELECTRONICS CORPCopyright 2006 by ELAN Microelectronics Corporation ELAN MICROELECTRONICS CORPORATIONAll Rights Reserved 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 Microcontroller8-Bit Microcontroller RE Interrupt Status Flag Register EM78P312NRFInterrupt 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 0FhEM78P312N 5.4 CPU Operation Mode8-Bit Microcontroller 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 EM78P312N8-Bit Microcontroller b 8-bit Receive Mode EM78P312Nc 8-bit Transmit/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 EM78P312NEM78P312N 5.11 Timer/Counter8-Bit Microcontroller 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 EM78P312NEM78P312N 5.14.4 The Status of RST, T, and P of the Status Register8-Bit Microcontroller General Purpose Registers EM78P312N 5.15 Interrupt8-Bit Microcontroller 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 MicrocontrollerEM78P312N 5.19 Instruction Set8-Bit Microcontroller 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 Microcontroller8-Bit Microcontroller EM78P312NTa= 25 C, VDD= 3.0V ± 5%, VSS= 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