at89c51re2-slsem ATMEL Corporation, at89c51re2-slsem Datasheet - Page 99

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

Baud Rate Selection for
UART 0 for Mode 1 and 3
82
AT89C51RE2
The Baud Rate Generator for transmit and receive clocks can be selected separately via
the T2CON and BDRCON_0 registers.
Figure 24. Baud Rate Selection for UART 0
Table 60. Baud Rate Selection Table UART 0
TIMER1
TIMER2
TIMER1
TIMER2
INT_BRG
INT_BRG
(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)
TBCK
0
0
0
0
1
1
0
0
1
(BDRCON)
RBCK
RBCK
TBCK
0
1
0
1
0
0
0
0
0
0
1
1
1
Clock Source
/ 16
/ 16
UART Tx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
Rx Clock_0
Tx Clock_0
7663B–8051–03/07
Clock Source
UART Rx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2