M16C62_M Datasheet, PDF (404/615 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

UART
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Continued from the previous page
Setting UARTi bit rate generator (i = 0 to 2)
b7
b0
UARTi bit rate generator (i = 0 to 2) [Address 03A116, 03A916, 037916]
UiBRG (i = 0 to 2)
Can be set to 0016 to FF16 (Note)
Note: Write to UARTi bit rate generator when transmission/reception is halted.
Transmission enabled
b7
b0 ^{UART0 transmit/receive control register 1} b7
1
U0C1 [Address 03A516]
UART1 transmit/receive control register 1
U1C1 [Address 03AD16]
Transmit enable bit
1 : Transmission enabled
b0
UART2 transmit/receive control register 1
1 _{U2C1 [Address 037D16]}
Transmit enable bit
1 : Transmission enabled
Writing transmit data
(b15)
b7
(b8)
b0 b7
b0 UART0 transmit buffer register [Address 03A316, 03A216] U0TB
UART1 transmit buffer register [Address 03AB16, 03AA16] U1TB
UART2 transmit buffer register [Address 037B16, 037A16] U2TB
Setting transmission data
When CTSi input level = “L”
Start transmission
Checking the status of UARTi transmit/receive control (i = 0 to 2)
UART0 transmit/receive control register 1
b7
b0 _{U0C1 [Address 03A516]}
b7
UART1 transmit/receive control register 1
U1C1 [Address 03AD16]
Transmit buffer empty flag
0 : Data present in transmit
buffer register
1 : No data present in transmit
buffer register
(Writing next transmit data enabled)
b0 _{UART2 transmit/receive control register 1}
U2C1 [Address 037D16]
Transmit buffer empty flag
0 : Data present in transmit
buffer register
1 : No data present in transmit
buffer register
(Writing next transmit data enabled)
Writing next transmit data
(b15)
b7
(b8)
b0 b7
b0 UART0 transmit buffer register [Address 03A316, 03A216] U0TB
UART1 transmit buffer register [Address 03AB16, 03AA16] U1TB
UART2 transmit buffer register [Address 037B16, 037A16] U2TB
Setting transmission data
Transmission is complete
Figure 2.5.10. Set-up procedure of transmission in UART mode (2)
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