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AT80C51RB2-3CSIM データシート(PDF) 37 Page - ATMEL Corporation

部品番号 AT80C51RB2-3CSIM
部品情報  80C51 High Performance ROM 8-bit Microcontroller
PDF  83 Pages
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メーカー  ATMEL [ATMEL Corporation]
ホームページ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT80C51RB2-3CSIM データシート(HTML) 37 Page - ATMEL Corporation

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38
AT80C51RD2/AT83C51Rx2
4113B–8051–03/05
Table 20. SADDR Register
SADDR - Slave Address Register (A9h)
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
Table 21. Baud Rate Selection Table UART
765
43210
TCLK
(T2CON)
RCLK
(T2CON)
TBCK
(BDRCON)
RBCK
(BDRCON)
Clock Source
UART Tx
Clock Source
UART Rx
00
00
Timer 1
Timer 1
10
00
Timer 2
Timer 1
01
00
Timer 1
Timer 2
11
00
Timer 2
Timer 2
X
0
1
0
INT_BRG
Timer 1
X
1
1
0
INT_BRG
Timer 2
0
X
0
1
Timer 1
INT_BRG
1
X
0
1
Timer 2
INT_BRG
X
X
1
1
INT_BRG
INT_BRG
RCLK
/ 16
RB CK
INT_BRG
0
1
TIMER1
0
1
0
1
TIMER2
INT_B RG
TIMER1
TI ME R2
TI ME R_BRG_RX
Rx Clock
/ 16
0
1
TIMER_BRG_TX
Tx Clock
TB CK
TCLK



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