Datasheet

13
AT89C51AC3
4383D–8051–02/08
Mnemonic Add Name 7 6 5 4 3 2 1 0
IEN0 A8h
Interrupt Enable
Control 0
EA EC ET2 ES ET1 EX1 ET0 EX0
IEN1 E8h
Interrupt Enable
Control 1
– – – – ESPI – EADC –
IPL0 B8h
Interrupt Priority
Control Low 0
– PPC PT2 PS PT1 PX1 PT0 PX0
IPH0 B7h
Interrupt Priority
Control High 0
– PPCH PT2H PSH PT1H PX1H PT0H PX0H
IPL1 F8h
Interrupt Priority
Control Low 1
– – – – SPIL – PADCL –
IPH1 F7h
Interrupt Priority
Control High1
– – – – SPIH – PADCH –
Mnemonic Add Name 7 6 5 4 3 2 1 0
ADCON F3h ADC Control – PSIDLE ADEN ADEOC ADSST SCH2 SCH1 SCH0
ADCF F6h ADC Configuration CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0
ADCLK F2h ADC Clock – – – PRS4 PRS3 PRS2 PRS1 PRS0
ADDH F5h ADC Data High byte ADAT9 ADAT8 ADAT7 ADAT6 ADAT5 ADAT4 ADAT3 ADAT2
ADDL F4h ADC Data Low byte – – – – – – ADAT1 ADAT0
Mnemonic Add Name 7 6 5 4 3 2 1 0
SPCON D4h SPI Control SPR2 SPEN SSDIS MSTR CPOL CPHA SPR1 SPR0
SPSCR D5h
SPI Status and
Control
SPIF – OVR MODF SPTE UARTM SPTEIE MOFIE
SPDAT D6h SPI Data – – – – – – – –
Mnemonic Add Name 7 6 5 4 3 2 1 0
PCON 87h Power Control SMOD1 SMOD0 – POF GF1 GF0 PD IDL
AUXR 8Eh Auxiliary Register 0 DPU VPFDP M0 XRS2 XRS1 XRS0 EXTRAM A0
AUXR1 A2h Auxiliary Register 1 – – ENBOOT – GF3 0 – DPS
CKCON0 8Fh Clock Control 0 – WDX2 PCAX2 SIX2 T2X2 T1X2 T0X2 X2
CKCON1 9Fh Clock Control 1 – – – – – – – SPIX2
FCON D1h Flash Control FPL3 FPL2 FPL1 FPL0 FPS FMOD1 FMOD0 FBUSY
EECON D2h EEPROM Contol EEPL3 EEPL2 EEPL1 EEPL0 – – EEE EEBUSY
FSTA D3 Flash Status - - - - - - SEQERR FLOAD