AT89C51RE2 Atmel Corporation, AT89C51RE2 Datasheet - Page 75

• 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

7663E–8051–10/08
Table 48. TH0 Register
TH0 (S:8Ch)
Timer 0 High Byte Register
Reset Value = 0000 0000b
Table 49. TL0 Register
TL0 (S:8Ah)
Timer 0 Low Byte Register
Reset Value = 0000 0000b
Table 50. TH1 Register
TH1 (S:8Dh)
Timer 1 High Byte Register
Reset Value = 0000 0000b
Bit Number
Bit Number
Bit Number
7:0
7:0
7:0
7
–
7
–
7
–
Mnemonic
Mnemonic
Mnemonic
Bit
Bit
Bit
6
–
6
–
6
–
Description
High Byte of Timer 0.
Description
Low Byte of Timer 0.
Description
High Byte of Timer 1.
5
–
5
–
5
–
4
–
4
–
4
–
3
–
3
–
3
–
2
–
2
–
2
–
AT89C51RE2
1
–
1
–
1
–
0
–
0
–
0
–
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