UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 185
UPD78F9418AGK-9EU
Manufacturer Part Number
UPD78F9418AGK-9EU
Description
Manufacturer
Renesas Electronics America
Datasheet
1.UPD78F9418AGK-9EU.pdf
(322 pages)
Specifications of UPD78F9418AGK-9EU
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13.4 Operation of Serial Interface 00
13.4.1 Operation stopped mode
Serial interface 00 has the following three modes.
Serial transfer is not executed in the operation stopped mode, therefore the power consumption can be reduced.
The P20/SCK/ASCK, P21/SO/TxD, and P22/SI/RxD pins can be used as normal I/O port pins.
(1)
Operation stopped mode
Asynchronous serial interface (UART) mode
3-wire serial I/O mode
CSIM00
Symbol
Register setting
Operation stopped mode is set by serial operation mode register 00 (CSIM00) and asynchronous serial
interface mode register 00 (ASIM00).
(a)
Serial operation mode register 00 (CSIM00)
CSIM00 is set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets CSIM00 to 00H.
Caution Bits 0 and 3 to 6 must be fixed to 0.
CSIE00
CSIE00
<7>
0
1
Operation stopped
Operation enabled
6
0
5
0
4
0
CHAPTER 13 SERIAL INTERFACE 00
3
0
User’s Manual U13952EJ3V1UD
DIR00 CSCK00
Operation control in 3-wire serial I/O mode
2
1
0
0
Address
FF72H
After reset
00H
R/W
R/W
183
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