AT89C51RB2/RC2
Registers
Table 30. SADEN Register
SADEN - Slave Address Mask Register (B9h)
7
6
5
4
3
2
1
0
Reset Value = 0000 0000b
Not bit addressable
Table 31. SADDR Register
SADDR - Slave Address Register (A9h)
7
6
5
4
3
2
1
0
Reset Value = 0000 0000b
Not bit addressable
Baud Rate Selection for
UART for Mode 1 and 3
The Baud Rate Generator for transmit and receive clocks can be selected separately via
the T2CON and BDRCON registers.
Figure 20. Baud Rate Selection
TIMER1
TIMER_BRG_RX
0
1
0
1
TIMER2
/ 16
Rx Clock
RCLK
RBCK
INT_BRG
TIMER1
TIMER2
TIMER_BRG_TX
0
1
0
1
/ 16
Tx Clock
TCLK
TBCK
INT_BRG
47
4180C–8051–12/03
ATMEL [ ATMEL ]
