Rainbow Electronics T89C5121 - Manual (Page 12)

12
A/T8xC5121
4164G–SCR–07/06
SFR Mapping
The Special Function Registers (SFR) of the T8xC5121 belongs to the following
categories:
• C51 core registers: ACC, B, DPH, DPL, PSW, SP
• I/O port registers: P0, P1, P2, P3
• Timer 0 registers: TCON, TH0, TH1, TMOD, TL0, TL1
• Serial I/O port registers: SADDR, SADEN, SBUF, SCON, BRL, BDRCON
• Power and clock control registers: PCON, CKRL, CKCON0, CKCON1, DCCKPS
• Interrupt system registers: IE0, IPL0, IPH0, IE1,IPL1, IPH1, ISEL
• Watchdog Timer 0: WDTRST, WDTPRG
• Others: AUXR, AUXR1, RCON
• Smart Card Interface: SCSR, SCCON/SCETU0, SCISR/SCETU1, SCIER/SCIIR,
SCTBUF/SCRBUF, SCGT0/SCWT0, SCGT1/SCWT1, SCICR/SCWT2
• Port configuration: SIOCON, LEDCON