AT83C51RB2-3CSCM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT83C51RB2-3CSCM Datasheet PDF : 83 Pages
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Table 20. 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 17. Baud Rate selection
TIMER1
TIMER2
INT_BRG
0
1
RCLK
TI MER_BRG_RX
0
1
RB CK
/ 16
Rx Clock
TIMER1
TI MER2
INT_B RG
0
1
TCLK
TIM ER_ BRG_TX
0
1
TB CK
/ 16
Tx Clock
Table 21. Baud Rate Selection Table UART
TCLK
(T2CON)
0
1
0
RCLK
(T2CON)
0
0
1
TBCK
(BDRCON)
0
0
0
RBCK
(BDRCON)
0
0
0
1
1
0
0
X
0
1
0
X
1
1
0
0
X
0
1
1
X
0
1
X
X
1
1
Clock Source Clock Source
UART Tx
UART Rx
Timer 1
Timer 1
Timer 2
Timer 1
Timer 1
Timer 2
Timer 2
Timer 2
INT_BRG
Timer 1
INT_BRG
Timer 2
Timer 1
INT_BRG
Timer 2
INT_BRG
INT_BRG
INT_BRG
38 AT80C51RD2/AT83C51Rx2
4113B–8051–03/05
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