AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 117

• 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

Interrupt Sources
and Vector
Addresses
7663E–8051–10/08
Table 87. Interrupt Sources and Vector Addresses
Number
10
11
0
1
2
3
4
5
6
7
8
9
Polling Priority
10
11
0
1
2
3
4
6
7
5
8
9
Interrupt Source
Keyboard
Timer 0
Timer 1
UART0
Timer 2
UART1
Reset
INT0
INT1
PCA
TWI
SPI
CF + CCFn (n = 0-4)
TF2+EXF2
RI_1+TI_1
Interrupt
Request
KBDIT
TWIIT
SPIIT
RI+TI
TF0
IE0
IE1
IF1
AT89C51RE2
Address
Vector
0000h
0003h
000Bh
0013h
001Bh
0023h
002Bh
0033h
003Bh
0043h
004Bh
0053h
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