AT89C51AC3 Atmel Corporation, AT89C51AC3 Datasheet - Page 64

• Manufacturer Part Number: AT89C51AC3
• Manufacturer: Atmel Corporation

Specifications of AT89C51AC3

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 62.5
• Sram (kbytes): 2.25
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

64
AT89C51AC3
Table 26. SADEN Register
SADEN (S:B9h)
Slave Address Mask Register
Reset Value = 0000 0000b
Not bit addressable
Table 27. SADDR Register
SADDR (S:A9h)
Slave Address Register
Reset Value = 0000 0000b
Not bit addressable
Table 28. SBUF Register
SBUF (S:99h)
Serial Data Buffer
Reset Value = 0000 0000b
Not bit addressable
Number
Number
Number
Bit
Bit
Bit
7-0
7-0
7-0
7
–
7
–
7
–
Mnemonic Description
Mnemonic Description
Mnemonic Description
Bit
Bit
Bit
6
–
6
–
6
–
Mask Data for Slave Individual Address
Slave Individual Address
Data sent/received by Serial I/O Port
5
–
5
–
5
–
4
–
4
–
4
–
3
–
3
–
3
–
2
–
2
–
2
–
4383D–8051–02/08
1
–
1
–
1
–
0
–
0
–
0
–