Datasheet

64
AT89C51AC3
4383D–8051–02/08
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
7 6 5 4 3 2 1 0
– – – – – – – –
Bit
Number
Bit
Mnemonic Description
7-0 Mask Data for Slave Individual Address
7 6 5 4 3 2 1 0
– – – – – – – –
Bit
Number
Bit
Mnemonic Description
7-0 Slave Individual Address
7 6 5 4 3 2 1 0
– – – – – – – –
Bit
Number
Bit
Mnemonic Description
7-0 Data sent/received by Serial I/O Port