M16C26A Datasheet, PDF (166/352 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/26A Group (M16C/26A, M16C/26B, M16C/26T)
13. Serial I/O
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13.1.1.7 CTS/RTS separate function (UART0)
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This function separates CTS0/RTS0, outputs RTS0 from the P60 pin, and accepts as input the CTS0
from the P64 pin. To use this function, set the register bits as shown below.
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• The CRD bit in the U0C0 register is set to "0" (enables UART0 CTS/RTS)
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• The CRS bit in the U0C0 register is set to "1" (outputs UART0 RTS)
_______ _______
• The CRD bit in the U1C0 register is set to "0" (enables UART1 CTS/RTS)
_______
• The CRS bit in the U1C0 register is set to "0" (inputs UART1 CTS)
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• The RCSP bit in the UCON register is set to "1" (inputs CTS0 from the P64 pin)
• The CLKMD1 bit in the UCON register is set to "0" (CLKS1 not used)
_______ _______
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Note that when using the CTS/RTS separate function, UART1 CTS/RTS separate function cannot be
used.
Microcomputer
TXD0 (P63)
RXD0 (P62)
CLK0 (P61)
RTS0 (P60)
CTS0 (P64)
IC
IN
OUT
CLK
CTS
RTS
NOTE:
1. This applies to the case where U1MAP bit in PACR register is set to “0” (P67 to P64).
Figure 13.1.1.7.1. CTS/RTS separate function usage
Rev. 2.00 Feb.15, 2007 ^{page 149} of 329
REJ09B0202-0200