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7721 데이터시트(PDF) 227 Page - Renesas Technology Corp

부품명 7721
상세설명  16-BIT SINGLE-CHIP MICROCOMPUTER
PDF  577 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

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SERIAL I/O
7721 Group User’s Manual
11–24
11.3 Clock synchronous serial I/O mode
Fig. 11.3.7 Initial setting example for relevant registers when receiving (1)
V Necessary only when an internal clock is selected.
UART0 baud rate register (BRG0) (Address 3116)
UART1 baud rate register (BRG1) (Address 3916)
b7
b0
Can be set to 0016 to FF16 .
1
0
0
0
UART0 transmit/receive mode register (Address 3016)
UART1 transmit/receive mode register (Address 3816)
b7
b0
Internal/External clock select bit
0: Internal clock
1: External clock
!: It may be “0” or “1.”
Clock synchronous serial I/O mode
Continued to Figure 11.3.8 on next page.
UART0 transmit/receive control register 0 (Address 3416)
UART1 transmit/receive control register 0 (Address 3C16)
b7
b0
CTS
/ RTS select bit
0: CTS function selected
1: RTS function selected
!! !
BRG count source select bits
b1 b0
0 0 : f2
0 1 : f16
1 0 : f64
1 1 : f512



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