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AT8xC5122/23

4202E–SCR–06/06

Special Function

Registers (SFR’s)

Introduction The Special Function Registers (SFRs) of the AT8xC5122/23 can be ranked into the fol-

lowing categories:

• C51 Core Registers: ACC, B, DPH, DPL, PSW, SP

• System Configuration Registers: PCON, CKRL, CKCON0, CKCON1, CKSEL,

PLLCON, PLLDIV, AUXR, AUXR1, RCON

• I/O Port Registers: P0, P1, P2, P3, P4, P5, PMOD1, PMOD2

• Timer Registers: TCON, TH0, TH1, TMOD, TL0, TL1

• Watchdog (WD) Registers: WDTRST, WDTPRG

• Serial I/O Port Registers: SADDR, SADEN, SBUF, SCON

• Baud Rate Generator (BRG) Registers: BRL, BDRCON

• System Interrupt Registers: IE0, IPL0, IPH0, IE1, IPL1, IPH1

• Smart Card Interface (SCI) Registers: SCSR, SCCON/SCETU0, SCISR/SCETU1,

SCIER/SCIIR, SCIBUF, SCGT0/SCWT0, SCGT1/SCWT1, SCICR/SCWT2, SCICLK

• DC/DC Converter Registers: DCCKPS

• Keyboard Interface Registers: KBE, KBF, KBLS

• Serial Port Interface (SPI) Registers: SPCON, SPSTA, SPDAT

• Universal Serial Bus (USB) Registers:USBCON, USBADDR, USBINT, USBIEN,

UEPNUM, UEPCONX, UEPSTAX, UEPRST, UEPINT, UEPIEN, UEPDATX,

UBYCTX, UFNUML, UFNUMH

• LED Controller Registers: LEDCON0, LEDCON1

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 212 213

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Rainbow-electronics AT89C5122 Bedienungsanleitung Seite 33