T89C51RD2-3CSIM Ver la hoja de datos (PDF) - Atmel Corporation

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T89C51RD2-3CSIM

0 to 40MHz Flash Programmable 8-bit Microcontroller

Atmel Corporation 

SFR Mapping

The Special Function Registers (SFRs) of the T89C51RD2 fall into the following

categories:

• C51 core registers: ACC, B, DPH, DPL, PSW, SP, AUXR1

• I/O port registers: P0, P1, P2, P3, P4, P5

• Timer registers: T2CON, T2MOD, TCON, TH0, TH1, TH2, TMOD, TL0, TL1, TL2,

RCAP2L, RCAP2H

• Serial I/O port registers: SADDR, SADEN, SBUF, SCON

• Power and clock control registers: PCON

• Hardware Watchdog Timer register: WDTRST, WDTPRG

• Interrupt system registers: IE, IP, IPH

• Flash and EEPROM registers: FCON, EECON, EETIM

• Others: AUXR, AUXR1, CKCON

8 T89C51RD2

4243G–8051–05/03

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