at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 100

• Manufacturer Part Number: at89c51re2-slsem
• Description: At89c51re2 8-bit Flash Microcontroller
• Manufacturer: ATMEL Corporation

Baud Rate Selection for
UART 1 for Mode 1 and 3
7663B–8051–03/07
The Baud Rate Generator for transmit and receive clocks can be selected separately via
the T2CON and BDRCON_1 registers.
Figure 25. Baud Rate Selection for UART 1
Table 61. Baud Rate Selection Table UART 1
TIMER1
TIMER2
TIMER1
TIMER2
INT_BRG1
INT_BRG1
(T2CON)
TCLK
X
X
X
0
1
0
1
0
1
(T2CON)
RCLK
TCLK
0
1
RCLK
0
1
0
0
1
1
0
1
X
X
X
TIMER_BRG_RX
TIMER_BRG_TX
(BDRCON_1)
TBCK_1
0
0
0
0
1
1
0
0
1
(BDRCON_1)
RBCK_1
RBCK_1
TBCK_1
0
1
0
1
0
0
0
0
0
0
1
1
1
Clock Source
UART Tx_1
INT_BRG_1
INT_BRG_1
INT_BRG_1
/ 16
/ 16
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
Rx Clock_1
Tx Clock_1
Clock Source
UART Rx_1
INT_BRG_1
INT_BRG_1
INT_BRG_1
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2
83