IBM EM78P809N manual R3/SR − Status Register Address 03h, Bit 5 Not used, RBS1 RBS0

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EM78P809N

8-Bit Microcontroller

R5

PC A12 A11 A10 A9 A8 A7 ~ A0

Reset Vector

0000h

000 : PAGE0 0000~03FF

001 : PAGE1 0400~07FF

010 : PAGE2 0800~0BFF

011 : PAGE3 0C00~0FFF

100 : PAGE4 1000~13FF

101 : PAGE5 1400~17FF

110 : PAGE6 1800~1BFF

111 : PAGE7 1C00~1FFF

CALL

RET

RETL

RETI	Store ACC, R3, R5

STACK LEVEL 1

STACK LEVEL 2

STACK LEVEL 3

STACK LEVEL 4

STACK LEVEL 5

STACK LEVEL 6

STACK LEVEL 7

STACK LEVEL 8

WDT Timer Overflow

External INT0 Pin Interrupt Occurs

TCC Overflow

External INT1 pin Interrupt Occurs

Time Base Timer Interrupt

UART Transmit Data Buffer Empty

UART Receive Data Buffer Full

UART Receive Error

TC3 Interrupt

SPI Interrupt

TC4 Interrupt

External INT3 Pin Interrupt Occurs

AD Conversion Complete

External INT5 Pin Interrupt Occurs

On-chip Program Memory

0003h

0006h

0009h

000Fh

0012h

0015h

0018h

001Bh

0021h

0024h

0027h

0030h

0033h

0036h

1FFFh

User Memory Space

Fig. 4. Program Counter Organization

R3/SR − Status Register ( Address: 03h )

Bit 7	Bit 6	Bit 5	Bit 4

Bit 3

Bit 2	Bit 1	Bit 0

RBS1

RBS0

0

T

P

Z

DC

C

Bit 7 ~ Bit 6 (RBS1 ~ RBS0) : R-Register page select

RBS1		RBS0		Register Bank (Address 05H ~ 0FH)

0		0		Bank 0

0		1		Bank 1

1		0		Bank 2

1		1		Bank 3

Bit 5 : Not used

Bit 4 (T) : Time-out bit. Set to “1” with the "SLEP" and "WDTC" commands, or during power up, and reset to “0” with the WDT time-out.

8 •	Product Specification (V1.0) 07.26.2005

(This specification is subject to change without further notice)

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Contents EM78P809N DOC. VersionElan Microelectronics Corporation Contents Specification Revision History CPU Bit MicrocontrollerApplications „ General purposePin Assignment OTP Programming Pins Functional Block Diagram Function DescriptionOperating Registers TbktcR1/TCC − Time Clock /Counter Address 01h R2/PC − Program Counter & Stack Address 02hR3/SR − Status Register Address 03h Bit 7 ~ Bit 6 RBS1 ~ RBS0 R-Register page selectBit 5 Not used RBS1 RBS0Bit 0 C Carry flag R4/RSR − RAM Select Register Address 04h GRBS1 GRBS0General Purpose Register Bank Address 20H ~ 3FH SIS = 0 Idle mode SIS = 1 Sleep mode PORT6 − Port 6 I/O Data Register Address 06hPORT7 Port 7 I/O Data Register Address 07h PORT8 − Port 8 I/O Data Register Address 08hTC4CR Timer/Counter 4 Control Register Address 0Bh TC4S = 1 StartTC4FF1 TC4FF0 TC4CK2 TC4CK1 TC4CK0Bit Microcontroller TC4D − Timer 4 Data Buffer Address 0Ch ISFR1 − Interrupt Status Flag Register 1 Address 0EhBit 7 TC3CAP Software capture control TC3CAP =TC3S = 1 Start TC3CAP TC3S TC3CK1 TC3CK0 TC3MTC3DB − Timer 3 Data Buffer B Address 07h TC2M = 1 Window modeBit 7 ~ Bit 6 ADD1 ~ ADD0 AD low 2-bit data buffer TC2S = 1 StartTC2DH − Timer 2 Data Buffer High Byte Address 09h TC2DL − Timer 2 Data Buffer Low Byte Address 0AhAdcr − AD Control Register Address 0Bh Bit 3 ADP AD power control Bit 7 ~ Bit 0 ADE7 ~ ADE0 AD input pin enable controlAdic − AD Input Pin Control Address 0Ch Addh − AD High 8-bit Data Buffer Address 0DhBit 7 TEN Keytone enable control TEN = 0 Disable TEN = 1 EnableBit 3 Tbten Time Base Timer Enable Control Bit Microcontroller Tbktc − TBT/Keytone Control Address 0EhBit 3 Uinven Enable Uart TXD and RXD port inverse output Uinven = 0 Disable TXD and RXD port inverse outputUinven = 1 Enable TXD and RXD port inverse output Bit 4 ~ Bit 2 BRATE2 ~ BRATE1 Transmit Baud Rate SelectBit 5 PRE Enable parity addition Bit Microcontroller URS − Uart Status Register Address 07hEven = 0 Odd parity Even = 1 Even parity Bit 2 EDS Data shift out edge select EDS = 0 Rising edge EDS = 1 Falling edgeSMP Dcol BRS2 BRS1 EDS Dord WBETransfer Mode SPIC2 − SPI Control Register 2 Address 06hSpid SPI Data Buffer Address 07h SPID7 SPID6 SPID5 SPID4 SPID3 SPID2 SPID1 SPID0PLE7x = 1 Disable P7x pull low PLC1 Pull Low Control Register 1 Address 0BhPHC2 − Pull High Control Register 2 Address 0Ch PLC2 − Pull Low Control 2 Address 0DhSpecial Purpose Registers AccumulatorControl Register Bit 7 Wdto WDT output selectBit Microcontroller IOC6 ~ IOC9 − I/O Port Control Register Intcr − INT Control Register Address 0BhBit 2 Reserved INT1ES = 0 Rising edge INT1ES = 1 Falling edgeINT Pin Secondary Enable Condition Function Pin External InterruptAdoscr − AD Offset Control Register Address 0Ch EdgeIMR2 − Interrupt Mask Register 2 Address 0Fh Uerrie Urie Utie Tbie EXIE1 TCIE0CPU Operation Mode Registers for CPU operation modeRbank Register Bank bits 7, 6 of R3, R/W Read/Write RbankMode Switching Control Operation ModeNormal AD Converter → Don’t care → Interrupt request flag will be recordedRegisters for AD Converter Circuit ADC Data Register Sampling TimeConversion Time Time Base Timer and Keytone Generator ADCK10Max. Frequency Max. Conversion Rate per Bit Tone Output Pin Timing Chart Uart Universal Asynchronous Receiver/Transmitter Registers for Uart CircuitRbank Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit Uart Mode Data Format in UartTransmitting ReceivingSPI Serial Peripheral Interface Baud Rate GeneratorRegisters for the SPI Circuit Shift Direction and Sample Phase Transfer ModeBit Transmit Mode Serial ClockBit Microcontroller Bit Receive Mode Bit Transmit/Receive ModeSCK pin Multiple Device Connect /SSTimer/Counter Registers for Timer/Counter 2 CircuitRbank Address Name Bit 7 Bit 6 Bit Timer Mode Counter ModeWindow Mode Window Mode Timing Chart Registers for Timer/Counter 3 CircuitCapture mode Configuration of Timer/Counter3Registers for Timer 4 Circuit TCIF4PDO Mode TCR4PWM Mode 12 TCC/WDT & PrescalerTC4 Interrupt Reset and Wake-up Reset13 I/O Ports Wake-up from Sleep Mode Wake-up from Idle modeAll interrupt Address Name Reset Type Bit Summary of the Initialized Values for RegistersBit Microcontroller Register Bank SCRTC2D9 TC2D8 Register Bank Previous value before reset Reset TypeStatus of RST, T, and P of Status Register Bit Microcontroller General Purpose RegistersController Reset Block Diagram InterruptOscillator Oscillator ModesCrystal Oscillator/Ceramic Resonators Crystal Summary of Maximum Operating SpeedsOscillator Type Frequency Mode C1 pF C2 pF EM78P809NExt. Clock 740External RC Oscillator Mode Crystal/Resonator-Parallel Mode CircuitEnwdtb = 0 Enable Enwdtb = 1 Disable Code Option RegisterCode Option Register Word For design reference onlyPower-on Considerations External Power-on Reset CircuitCustomer ID Register Cyes = 0 One cycle Cyes = 1 Two cyclesResidue-Voltage Protection VddEM78P809N Rin Vdd EM78P809NInstruction Set Vdd 40KR2Binary Instruction Hex Mnemonic Operation Status Affected DECSymbol Parameter Condition Min Typ Max Unit Absolute Maximum RatingsRecommended Operating Conditions Vss =DC Electrical Characteristics Ta= 25 C, VDD= 5.0V ± 5%, VSS=Typical value is based on characterization results at 25C Ta= 25 C, VDD= 3.0V ± 5%, VSS= Varef AC Electrical Characteristic Symbol Parameter Conditions Min Typ Max UnitTa=- 40C ~ 85 C, VDD=5V ± 5%, VSS=0V = selected prescaler ratioTiming Diagram AC Test Input/Output WaveformPackage Types OTP MCUPin Count Package Size Contents III EM78P809N