Rainbow Electronics T89C51IC2 - Manual (Page 3)

3
T89C51IC2
Rev. C – 3-Dec-01
SFR Mapping
The Special Function Registers (SFRs) of the T89C51IC2 fall into the following
categories:
• 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
• I2C Interface registers: SSCON, SSCS, SSDAT, SSADR
• BRG (Baud Rate Generator) registers: BRL, BDRCON
• Flash register: FCON
• Clock Prescaler register: CKRL
• 32Khz Sub Clock Oscillator registers: CKSEL, OSSCON
• Others: AUXR, AUXR1, CKCON0, CKCON1