Datasheet

12
A/T89C51AC2
4127H–8051–02/08
CCAP0L
CCAP1L
CCAP2L
CCAP3L
CCAP4L
EAh
EBh
ECh
EDh
EEh
PCA Compare Capture Module 0 L
PCA Compare Capture Module 1 L
PCA Compare Capture Module 2 L
PCA Compare Capture Module 3 L
PCA Compare Capture Module 4 L
CCAP0L7
CCAP1L7
CCAP2L7
CCAP3L7
CCAP4L7
CCAP0L6
CCAP1L6
CCAP2L6
CCAP3L6
CCAP4L6
CCAP0L5
CCAP1L5
CCAP2L5
CCAP3L5
CCAP4L5
CCAP0L4
CCAP1L4
CCAP2L4
CCAP3L4
CCAP4L4
CCAP0L3
CCAP1L3
CCAP2L3
CCAP3L3
CCAP4L3
CCAP0L2
CCAP1L2
CCAP2L2
CCAP3L2
CCAP4L2
CCAP0L1
CCAP1L1
CCAP2L1
CCAP3L1
CCAP4L1
CCAP0L0
CCAP1L0
CCAP2L0
CCAP3L0
CCAP4L0
Table 7. PCA SFRs (Continued)
Mnemonic
Add Name 7 6 5 4 3 2 1 0
Table 8. Interrupt SFRs
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
– – – – – – 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
– – – – – – PADCL –
IPH1 F7h
Interrupt Priority
Control High1
– – – – – – PADCH –
Table 9. ADC SFRs
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
Table 10. Other SFRs
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 – – M0 – XRS1 XRS2 EXTRAM A0
AUXR1 A2h Auxiliary Register 1 – – ENBOOT – GF3 0 – DPS
CKCON 8Fh Clock Control – WDX2 PCAX2 SIX2 T2X2 T1X2 T0X2 X2
FCON D1h Flash Control FPL3 FPL2 FPL1 FPL0 FPS FMOD1 FMOD0 FBUSY
EECON D2h EEPROM Contol EEPL3 EEPL2 EEPL1 EEPL0 – – EEE EEBUSY