Datasheet

6
AT89C51ID2
4289C–8051–11/05
Table 5. Port SFRs
MnemonicAddName 76543210
P0 80h 8-bit Port 0
P1 90h 8-bit Port 1
P2 A0h 8-bit Port 2
P3 B0h 8-bit Port 3
P4 C0h 8-bit Port 4
P5 E8h8-bit Port 5 ----
P5 C7h 8-bit Port 5 (byte addressable)
Table 6. Flash and EEPROM Data Memory SFR
MnemonicAddName 76543210
FCON D1h Flash Control FPL3 FPL2 FPL1 FPL0 FPS FMOD1 FMOD0 FBUSY
EECON EEPROM data Control
Table 7. Timer SFRs
MnemonicAddName 76543210
TCON 88h Timer/Counter 0 and 1 Control TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0
TMOD 89h Timer/Counter 0 and 1 Modes GATE1 C/T1# M11 M01 GATE0 C/T0# M10 M00
TL0 8Ah Timer/Counter 0 Low Byte
TH0 8Ch Timer/Counter 0 High Byte
TL1 8Bh Timer/Counter 1 Low Byte
TH1 8Dh
Timer/Counter 1 High Byte
WDTRST A6h WatchDog Timer Reset
WDTPRGA7hWatchDog Timer Program -----WTO2WTO1WTO0
T2CON C8h Timer/Counter 2 control TF2 EXF2 RCLK TCLK EXEN2 TR2 C/T2# CP/RL2#
T2MOD C9h Timer/Counter 2 Mode ------T2OEDCEN
RCAP2H CBh
Timer/Counter 2 Reload/Capture
High byte
RCAP2L CAh
Timer/Counter 2 Reload/Capture
Low byte
TH2 CDh Timer/Counter 2 High Byte
TL2 CCh Timer/Counter 2 Low Byte