UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 440

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

13.4.1 Operation stop mode
addition,
P75/SI11/SEG25, and P76/SO11/SEG26 pins can be used as ordinary I/O port pins in this mode.
(1) Register used
438
Address: FF80H After reset: 00H R/W
Address: FF88H After reset: 00H R/W
CSIM10
CSIM11
Serial communication is not executed in this mode. Therefore, the power consumption can be reduced. In
Remarks 1. The TxD61, RxD61, and INTPR61 functions are for 78K0/DF2 only.
Symbol
Symbol
The operation stop mode is set by serial operation mode register 1n (CSIM1n).
To set the operation stop mode, clear bit 7 (CSIE1n) of CSIM1n to 0.
(a) Serial operation mode register 1n (CSIM1n)
CSIM1n can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears CSIM1n to 00H.
Remark n = 0, 1
the
Serial operation mode register 10 (CSIM10)
Serial operation mode register 11 (CSIM11)
Notes 1.
Notes 1.
2. The SEG24 to SEG27 functions are for
CSIE10
CSIE10
CSIE11
CSIE11
P10/SCK10/INTP4/T
<7>
<7>
0
0
2.
2.
To use P10/SCK10/INTP4/T
CSIM10 in the default status (00H).
Bit 0 (CSOT10) of CSIM10 and serial I/O shift register 10 (SIO10) are reset.
To use P74/SCK11/SEG24, P77/SSI11/TIOP20/SEG27, and P76/SO11/SEG26 as
general-purpose ports, set CSIM11 in the default status (00H).
Bit 0 (CSOT11) of CSIM11 and serial I/O shift register 11 (SIO11) are reset.
Disables operation
Disables operation
TRMD10
TRMD11
CHAPTER 13 SERIAL INTERFACES CSI10 AND CSI11
6
6
X
D61,
Preliminary User’s Manual U19748EJ1V0UD
SSE11
Note 1
Note 1
5
0
5
P11/SI10/R
and asynchronously resets the internal circuit
and asynchronously resets the internal circuit
Operation control in 3-wire serial I/O mode
Operation control in 3-wire serial I/O mode
X
DIR10
DIR11
D61 and P12/SO10/INTP2 as general-purpose ports, set
4
4
PD78F0842, 78F0843, 78F0848, and 78F0849 only.
X
D61/INTPR61,
0
3
0
3
P12/SO10/INTP2,
2
0
2
0
Note 2
Note 2
.
.
1
0
1
0
P74/SCK11/SEG24,
CSOT10
CSOT11
0
0