upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 269
upd78f0103
Manufacturer Part Number
upd78f0103
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0103.pdf
(485 pages)
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13.3 Registers Controlling Serial Interface CSI10
(1) Serial operation mode register 10 (CSIM10)
Address: FF80H After reset: 00H R/W
CSIM10
Serial interface CSI10 is controlled by the following four registers.
Notes 1.
Caution Be sure to clear bit 5 to 0.
Symbol
CSIM10 is used to select the operation mode and enable or disable operation.
CSIM10 can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears this register to 00H.
Serial operation mode register 10 (CSIM10)
Serial clock selection register 10 (CSIC10)
Port mode register 1 (PM1)
Port register 1 (P1)
2.
3.
4.
5.
6.
7.
TRMD10
DIR10
Bit 0 is a read-only bit.
When using P10/SCK10(/TxD0
CHAPTER 4 PORT FUNCTIONS and Caution 3 of Figure 13-3.
Bit 0 (CSOT10) of CSIM10 and serial I/O shift register 10 (SIO10) are reset.
Do not rewrite TRMD10 when CSOT10 = 1 (during serial communication).
The SO10 output is fixed to the low level when TRMD10 is 0. Reception is started when data is read
from SIO10.
Do not rewrite DIR10 when CSOT10 = 1 (during serial communication).
CSOT10
CSIE10
CSIE10
PD780102, 780103, and 78F0103 only.
0
<7>
Note 5
0
1
1
0
1
0
1
Note 6
Note 4
Figure 13-2. Format of Serial Operation Mode Register 10 (CSIM10)
Disables operation
Enables operation
Receive mode (transmission disabled).
Transmit/receive mode
MSB
LSB
Communication is stopped.
Communication is in progress.
TRMD10
6
Note 1
CHAPTER 13 SERIAL INTERFACE CSI10
Note 2
5
0
User’s Manual U15836EJ5V0UD
Note 7
and asynchronously resets the internal circuit
), P11/SI10(/RxD0
Operation control in 3-wire serial I/O mode
DIR10
4
Transmit/receive mode control
Communication status flag
First bit specification
Note 7
3
0
), or P12/SO10 as a general-purpose port, see
2
0
Note 3
.
1
0
CSOT10
0
269
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