T89C51RD2_14 datasheet(8/104 Pages) ATMEL

Part #	T89C51RD2

Description	64K bytes On-chip Flash Program/Data Memory

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Manufacturer	ATMEL [ATMEL Corporation]

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T89C51RD2

4243G–8051–05/03

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

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