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(b) Automatic data transmit/receive control register 0 (ADTC0)
ADTC0 is set via a 1-bit or 8-bit memory manipulation instruction.
RESET input sets this register to 00H.
Symbol
<7>
<6>
ADTC0
RE0
ARLD0
RE0
0
Reception disabled
1
Reception enabled
ARLD0
0
One-shot mode
1
Repeat mode
TRF0
0
Detection of termination of automatic transmission/reception (this bit is set to 0 upon suspension of automatic
transmission/reception or when ARLD0 = 0)
1
Automatic transmission/reception in progress (this bit is set to 1 when data is written to SIO1A0)
Notes 1. Bit 3 (TRF0) is read-only.
2. When RE0 is reset to 0, P25 (CMOS I/O) is used even when bit 7 (CSIE10) of serial operation
mode register 1A0 (CSIM1A0) is set to 1.
3. Use TRF0, instead of CSIIF10 (interrupt request flag), to identify the completion of automatic
transmission/reception.
232
CHAPTER 12 SERIAL INTERFACE 1A0
5
4
<3>
0
0
TRF0
Control of reception of automatic transmit/receive function
Note 2
Selection of operation mode for automatic transmit/receive function
Status of automatic transmit/receive function
User's Manual U15331EJ4V1UD
2
1
0
0
0
0
Note 3
Address
After reset
R/W
Note 1
FF79H
00H
R/W
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