at89c51rd2-smsum ATMEL Corporation, at89c51rd2-smsum Datasheet - Page 51

• Manufacturer Part Number: at89c51rd2-smsum
• Description: 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

14.3
14.4
4235J–8051–01/08
Registers
Baud Rate Selection for UART for Mode 1 and 3
Table 14-1.
SADEN - Slave Address Mask Register (B9h)
Reset Value = 0000 0000b
Not bit addressable
Table 14-2.
SADDR - Slave Address Register (A9h)
Reset Value = 0000 0000b
Not bit addressable
The Baud Rate Generator for transmit and receive clocks can be selected separately via the
T2CON and BDRCON registers.
Figure 14-4. Baud Rate Selection
7
7
TIMER1
TIMER2
TIMER1
TIMER2
INT_BRG
INT_BRG
SADEN Register
SADDR Register
6
6
RCLK
TCLK
0
1
0
1
5
5
TIMER_BRG_RX
TIMER_BRG_TX
4
4
3
3
RBCK
TBCK
0
1
0
1
AT89C51RD2/ED2
2
2
/ 16
/ 16
Rx Clock
Tx Clock
1
1
0
0
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