M16C62P_06 Datasheet, PDF (193/421 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
0 ^PCLK1
1
f1SIO or f2SIO
1/8
f8SIO
(UART1)
1/4
f32SIO
RXD1
RXD polarity reversing
circuit
Clock source selection
CLK1 to CLK0 _CKDIR
f1SIO or f2SIO ⁰⁰
Internal
f8SIO ⁰¹
0
f32SIO ¹⁰
1
External
U1BRG
register
1 / (n1+1)
UART reception SMD2 to SMD0
010, 100, 101, 110
1/16
Clock synchronous
type
001
Reception
control circuit
UART transmission
010, 100, 101, 110
1/16
Clock synchronous
type
001
Transmission
control circuit
Clock synchronous type
(when internal clock is selected)
1/2
0
Clock synchronous type
(when external clock is selected)
1
CLK1
CTS1 / RTS1/
CTS0 / CLKS1
CKPOL
CLK
polarity
reversing
circuit
Clock output
pin select
CLKMD0
0
Clock synchronous type
(when internal clock is selected)
1
1CTS/RTS selected _{CTS/RTS disabled}
CRS ₁
0
CLKMD1
0
0 CTS/RTS disabled
CKDIR
RTS1
0 CTS1
1
CRD
n1: Values set to the U1BRG register
VSS
PCLK1: Bit in the PCLKR register
SMD2 to SMD0, CKDIR: Bits in U1MR register
CLK1 to CLK0, CKPOL, CRD, CRS: Bits in U1C0 register
CLKMD0, CLKMD1, RCSP: Bits in UCON register
1
RCSP
CTS0 from UART0
Receive
clock
Transmit
clock
Transmit/
receive
unit
Figure 17.2 UART1 Block Diagram
TXD
polarity
reversing
circuit
TXD1
Rev.2.41 Jan 10, 2006 Page 178 of 390
REJ09B0185-0241