AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 9

• Manufacturer Part Number: AT89C51RE2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RE2

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Uart: 2
• Sram (kbytes): 8.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART/OCD
• Watchdog: Yes

Table 6. Port SFRs
Table 7. Flash and EEPROM Data Memory SFR
Table 8. Timer SFRs
Table 9. PCA SFRs
7663E–8051–10/08
P5
P6
FCON
FSTA
TCON
TMOD
TL0
TH0
TL1
TH1
WDTRST
WDTPRG
T2CON
T2MOD
RCAP2H
RCAP2L
TH2
TL2
Mnemo
-nic
CCON
CMOD
CL
Mnemonic
Mnemonic
Mnemonic
Add Name
D8h
D9h
E9h
Add
Add
Add
CDh
CCh
D1h
D3h
8Ch
8Dh
C8h
C9h
CBh
CAh
E8h
F8h
8Ah
8Bh
A6h
A7h
88h
89h
PCA Timer/Counter Control
PCA Timer/Counter Mode
PCA Timer/Counter Low byte
Name
8-bit Port 5
2-bit Port 5
Name
Flash Controller Control
Flash Controller Status
Name
Timer/Counter 0 and 1 Control
Timer/Counter 0 and 1 Modes
Timer/Counter 0 Low Byte
Timer/Counter 0 High Byte
Timer/Counter 1 Low Byte
Timer/Counter 1 High Byte
WatchDog Timer Reset
WatchDog Timer Program
Timer/Counter 2 control
Timer/Counter 2 Mode
Timer/Counter 2 Reload/Capture
High byte
Timer/Counter 2 Reload/Capture
Low byte
Timer/Counter 2 High Byte
Timer/Counter 2 Low Byte
7
CF
CIDL
GATE1
FPL3
FMR
TF1
TF2
7
7
7
-
-
-
6
CR
WDTE
C/T1#
FPL2
EXF2
TR1
6
6
6
-
-
-
5
-
-
RCLK
FPL1
M11
TF0
5
5
5
-
-
-
4
CCF4
-
FPL0
TCLK
TR0
M01
4
4
4
-
-
-
3
CCF3
-
GATE0
EXEN2
FPS
IE1
3
3
3
-
-
-
2
CCF2
CPS1
FMOD2
WTO2
C/T0#
AT89C51RE2
FSE
TR2
IT1
2
2
2
-
-
1
CCF1
CPS0
FMOD1
FLOAD
WTO1
C/T2#
T2OE
M10
IE0
1
1
1
0
CCF0
ECF
CP/RL2#
FMOD0
FBUSY
WTO0
DCEN
M00
IT0
0
0
0
9