AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 68
AT89C5131-PLTIL
Manufacturer Part Number
AT89C5131-PLTIL
Description
8-bit Flash Microcontroller with Full Speed USB Device
Manufacturer
ATMEL Corporation
Datasheet
1.AT89C5131-PLTIL.pdf
(176 pages)
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Baud Rate Selection for
UART for Mode 1 and 3
Baud Rate Selection Table for
UART
Internal Baud Rate Generator
(BRG)
68
AT89C5131
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 34. Baud Rate Selection
When the internal Baud Rate Generator is used, the Baud Rates are determined by the
BRG overflow depending on the BRL reload value, the value of SPD bit (Speed Mode)
in BDRCON register and the value of the SMOD1 bit in PCON register.
(T2CON)
TCLK
7
TIMER1
X
X
X
TIMER2
TIMER1
TIMER2
0
1
0
1
0
1
INT_BRG
INT_BRG
6
(T2CON)
RCLK
X
X
X
0
0
1
1
0
1
RCLK
TCLK
0
1
0
1
5
(BDRCON)
TBCK
TIMER_BRG_RX
TIMER_BRG_TX
0
0
0
0
1
1
0
0
1
4
(BDRCON)
RBCK
3
0
0
0
0
0
0
1
1
1
RBCK
TBCK
0
1
0
1
2
Clock Source
UART Tx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 2
Timer 1
Timer 2
Timer 1
Timer 2
/ 16
/ 16
1
Rx Clock
Tx Clock
4136B–USB–09/03
Clock Source
UART Rx
INT_BRG
INT_BRG
INT_BRG
Timer 1
Timer 1
Timer 2
Timer 2
Timer 1
Timer 2
0
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