AT89C51ID2-SMSIM ATMEL [ATMEL Corporation], AT89C51ID2-SMSIM Datasheet - Page 4

• Manufacturer Part Number: AT89C51ID2-SMSIM
• Description: 8-bit Flash Microcontroller
• Manufacturer: ATMEL [ATMEL Corporation]

SFR Mapping
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AT89C51ID2
The Special Function Registers (SFRs) of the AT89C51ID2 fall into the following
categories:
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C51 core registers: ACC, B, DPH, DPL, PSW, SP
I/O port registers: P0, P1, P2, P3, PI2
Timer registers: T2CON, T2MOD, TCON, TH0, TH1, TH2, TMOD, TL0, TL1, TL2,
RCAP2L, RCAP2H
Serial I/O port registers: SADDR, SADEN, SBUF, SCON
PCA (Programmable Counter Array) registers: CCON, CCAPMx, CL, CH, CCAPxH,
CCAPxL (x: 0 to 4)
Power and clock control registers: PCON
Hardware Watchdog Timer registers: WDTRST, WDTPRG
Interrupt system registers: IE0, IPL0, IPH0, IE1, IPL1, IPH1
Keyboard Interface registers: KBE, KBF, KBLS
SPI registers: SPCON, SPSTR, SPDAT
2-wire Interface registers: SSCON, SSCS, SSDAT, SSADR
BRG (Baud Rate Generator) registers: BRL, BDRCON
Flash register: FCON
Clock Prescaler register: CKRL
32 kHz Sub Clock Oscillator registers: CKSEL, OSSCON
Others: AUXR, AUXR1, CKCON0, CKCON1
4289A–8051–09/03