7702 Datasheet, PDF (190/522 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER

SERIAL I/O
7.3 Clock synchronous serial I/O mode
UART0 transmit/receive mode register (Address 3016)
UART1 transmit/receive mode register (Address 38₁₆)
b7
b0
0! !! 0 0 1
Clock synchronous serial I/O mode
Internal/External clock select bit
0: Internal clock
1: External clock
!: It may be “0” or “1.”
UART0 transmit/receive control register 0 (Address 3416 )
UART1 transmit/receive control register 0 (Address 3C16 )
b7
b0
BRG count source select bits
b1 b0
0 0 : f2
0 1 : f 16
1 0 : f 64
1 1 : f 512
CTS / RTS select bit
0: CTS function selected
1: RTS function selected
UART0 baud rate register (BRG0) (Address 3116 )
UART1 baud rate register (BRG1) (Address 3916 )
b7
b0
Set to 0016 to FF16 .
V Necessary only when an internal clock is selected.
Continued to Figure 7.3.7 on next page.
Fig. 7.3.6 Initial setting example for relevant registers when receiving (1)
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7702/7703 Group User’s Manual