M16C Datasheet, PDF (118/262 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Preliminary Specifications REV.B
Mitsubishi microcomputers
Specifications in this manual are tentative and subject to change.
M16C / 6N Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Serial I/O
UARTi transmit/receive control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
UiC1(i=0,1)
Address
When reset
03A516,03AD16
0216
Bit
symbol
Bit name
TE
Transmit enable bit
Function
(During clock synchronous
serial I/O mode)
Function
(During UART mode)
0 : Transmission disabled 0 : Transmission disabled
1 : Transmission enabled 1 : Transmission enabled
TI
Transmit buffer
empty flag
RE Receive enable bit
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
RI
Receive complete flag 0 : No data present in
0 : No data present in
receive buffer register
receive buffer register
1 : Data present in
1 : Data present in
receive buffer register
receive buffer register
Nothing is assigned.
These bits can neither be set nor reset. When read, the value of these bits is “0”.
RW
UART2 transmit/receive control register 1
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U2C1
Address
01FD16
When reset
0216
Bit
symbol
Bit name
TE Transmit enable bit
Function
(During clock synchronous
serial I/O mode)
Function
(During UART mode)
0 : Transmission disabled 0 : Transmission disabled
1 : Transmission enabled 1 : Transmission enabled
TI Transmit buffer
empty flag
RE Receive enable bit
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
0 : Data present in
transmit buffer register
1 : No data present in
transmit buffer register
0 : Reception disabled
1 : Reception enabled
RI Receive complete flag
0 : No data present in
receive buffer register
1 : Data present in
receive buffer register
U2IRS
UART2 transmit interrupt
cause select bit
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
0 : No data present in
receive buffer register
1 : Data present in
receive buffer register
0 : Transmit buffer empty
(TI = 1)
1 : Transmit is completed
(TXEPT = 1)
U2RRM UART2 continuous
receive mode enable bit
0 : Continuous receive
mode disabled
1 : Continuous receive
mode enabled
Invalid
U2LCH Data logic select bit
0 : No reverse
1 : Reverse
0 : No reverse
1 : Reverse
U2ERE Error signal output
enable bit
Must be fixed to “0”
0 : Output disabled
1 : Output enabled
RW
Figure 12-7. Serial I/O-related registers (4)
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