at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 8

• Manufacturer Part Number: at89c51re2-slsem
• Description: At89c51re2 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

SFR Mapping
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AT89C51RE2
The Special Function Registers (SFRs) of the AT89C51RE2 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, P4, P5, P6
Timer registers: T2CON, T2MOD, TCON, TH0, TH1, TH2, TMOD, TL0, TL1, TL2,
RCAP2L, RCAP2H
Serial I/O port registers: SADDR_0, SADEN_0, SBUF_0, SCON_0, SADDR_1,
SADEN_1, SBUF_1, SCON_1,
PCA (Programmable Counter Array) registers: CCON, CCAPMx, CL, CH, CCAPxH,
CCAPxL (x: 0 to 4)
Power and clock control registers: PCON, CKAL, CKCON0_1
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
BRG (Baud Rate Generator) registers: BRL_0, BRL_1, BDRCON_0, BDRCON_1
Memory register: FCON, FSTA
Clock Prescaler register: CKRL
Others: AUXR, AUXR1, CKCON0, CKCON1, BMSEL
7663B–8051–03/07