AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 4

• 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

Pin Configurations
4
AT89C51RE2
P1.5/CEX2/MISO
P6.0/RxD_1/SDA
P1.7/CEx4/MOSI
P1.6/CEX3/SCK
P3.0/RxD_0
P3.1/TxD_0
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
RST
14
10
12
13
15
16
17
7
8
9
11
18 19
6
5 4 3 2 1
20
AT89C51RE2
21
PLCC44
22
23
P1.5/CEX2/MISO
P1.7/CEX4/MOSI
P6.0/RxD_1/SDA
P1.6/CEX3/SCK
24
44 43 42 41 40
P3.0/RxD_0
25
P3.1/TxD_0
P3.2/INT0
P3.3/INT1
26
P3.4/T0
P3.5/T1
27 28
RST
32
38
37
36
35
34
33
31
30
29
39
4
10
1
3
5
6
7
8
2
9
11
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
P6.1/TxD_1/SCL
ALE
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
44
12 13
43 42 41 40 39
14
AT89C51RE2
15
VQFP44
16
17
38 37 36 35 34
18
19
20
21 22
26
32
30
28
27
33
31
29
25
24
23
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA
P6.1/TxD_1/SCL
ALE
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
7663E–8051–10/08