At8xc51snd1c – Rainbow Electronics AT89C51SND1C User Manual
Page 144
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144
AT8xC51SND1C
4109E–8051–06/03
Table 126. SBUF Register
SBUF (S:99h) – Serial Buffer Register
Reset value = XXXX XXXXb
Table 127. SADDR Register
SADDR (S:A9h) – Slave Individual Address Register
Reset Value = 0000 0000b
Table 128. SADEN Register
SADEN (S:B9h) – Slave Individual Address Mask Byte Register
Reset Value = 0000 0000b
7
6
5
4
3
2
1
0
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
Bit
Number
Bit
Mnemonic
Description
7 - 0
SD7:0
Serial Data Byte
Read the last data received by the serial I/O Port.
Write the data to be transmitted by the serial I/O Port.
7
6
5
4
3
2
1
0
SAD7
SAD6
SAD5
SAD4
SAD3
SAD2
SAD1
SAD0
Bit
Number
Bit
Mnemonic
Description
7 - 0
SAD7:0
Slave Individual Address
7
6
5
4
3
2
1
0
SAE7
SAE6
SAE5
SAE4
SAE3
SAE2
SAE1
SAE0
Bit
Number
Bit
Mnemonic
Description
7 - 0
SAE7:0
Slave Address Mask Byte
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