UPD78F9418AGK-9EU Renesas Electronics America, UPD78F9418AGK-9EU Datasheet - Page 178

• Manufacturer Part Number: UPD78F9418AGK-9EU
• Manufacturer: Renesas Electronics America

Specifications of UPD78F9418AGK-9EU

• Lead Free Status / Rohs Status: Supplier Unconfirmed

13.3 Registers Controlling Serial Interface 00
176
The following four registers are used to control serial interface 00.
(1)
Cautions 1. Bits 0 and 3 to 6 must be fixed to 0.
Serial operation mode register 00 (CSIM00)
Asynchronous serial interface mode register 00 (ASIM00)
Asynchronous serial interface status register 00 (ASIS00)
Baud rate generator control register 00 (BRGC00)
CSIM00
Symbol
Serial operation mode register 00 (CSIM00)
This register is set when using serial interface 00 in the 3-wire serial I/O mode.
CSIM00 is set using a 1-bit or 8-bit memory manipulation instruction.
RESET input sets CSIM00 to 00H.
2. Set CSIM00 to 00H in the UART mode.
CSIE00
CSIE00
CSCK00
DIR00
<7>
0
1
0
1
0
1
Operation stopped
Operation enabled
MSB
LSB
Clock input to SCK pin from external
Dedicated baud rate generator output
6
0
Figure 13-3. Format of Serial Operation Mode Register 00
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
Clock selection in 3-wire serial I/O mode
2
1
Start bit specification
0
0
Address
FF72H
After reset
00H
R/W
R/W