M16C62P_06 Datasheet, PDF (192/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
17. Serial Interface
Main clock, PLL clock, or on-chip oscillator clock
1/2 ^f2SIO
f1SIO
PCLK1
0
1
f1SIO or f2SIO
1/8
f8SIO
(UART0)
RXD0
RXD polarity
reversing circuit
Clock source selection
CLK1 to CLK0
f1SIO or f2SIO ^00h
01h
f8SIO
f32SIO ^10h
CKDIR
Internal
0
1
External
U0BRG
register
1 / (n0+1)
1/4
f32SIO
UART reception SMD2 toSMD0
1/16 ^{010, 100, 101, 110}
Clock synchronous
type
001
Reception
control circuit
Receive
clock
UART transmission
1/16 _{010, 100, 101, 110}
Clock synchronous type
Transmission
control circuit
001
Clock synchronous type
(when internal clock is selected)
0
1/2
Transmit
clock
Transmit/
receive
unit
CLK0
CTS0 /
RTS0
CKPOL
CLK
polarity
reversing
circuit
Clock synchronous type
(when internal clock is selected)
1
Clock synchronous
type
CKDIR
(when external clock is
selected)
CTS/RTS disabled
CTS/RTS selected
1
CRS 0
RCSP
0
0
CTS0 from UART1 ¹
RTS0
CTS/RTS disabled
CTS0
1
VSS ^CRD
n0: Values set to the U0BRG register
PCLK1: Bit in the PCLKR register
SMD2 to SMD0, CKDIR: Bits in U0MR register
CLK1 to CLK0, CKPOL, CRD, CRS: Bits in U0C0 register
CLKMD0, CLKMD1, RCSP: Bits in UCON register
Figure 17.1 UART0 Block Diagram
TXD
polarity
reversing
circuit
TXD0
Rev.2.41 Jan 10, 2006 Page 177 of 390
REJ09B0185-0241