CHAPTER 12 SERIAL INTERFACE 20
User’s Manual U15075EJ1V0UM00
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(b) Asynchronous serial interface mode register 20 (ASIM20)
ASIM20 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets ASIM20 to 00H.
TXE20
0
1
Transmit operation control
Transmit operation stopped
Transmit operation enabled
Receive operation stopped
Receive operation enabled
RXE20
0
1
0
1
0
0
0
1
0
1
1
1
No parity
Always add 0 parity at transmission.
Parity check is not performed at reception (No parity error is generated).
Odd parity
Even parity
Receive operation control
PS201
Parity bit specification
PS200
CL20
0
1
SL20
Character length specification
7 bits
8 bits
1 bit
2 bits
Transmit data stop bit length specification
TXE20
RXE20
PS201
PS200
CL20
SL20
0
0
ASIM20
<7>
<6>
5
4
Symbol
Address
After reset
R/W
FF70H
00H
R/W
3
2
1
0
Cautions 1.
Bits 0 and 1 must be set to 0.
2.
Switch operating modes after halting the serial transmit/receive operation.
Summary of Contents for mPD789425
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