AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 33

• Manufacturer Part Number: AT89C5122
• Description: MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
• Manufacturer: ATMEL [ATMEL Corporation]

Special Function
Registers (SFR’s)
Introduction
4202D–SCR–06/05
The Special Function Registers (SFRs) of the AT8xC5122/23 can be ranked into the fol-
lowing categories:
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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
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