UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 229

• Manufacturer Part Number: UPD78F0988AGC-8BS
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

12.3 Registers Controlling Serial Interfaces
The following six registers control the serial interfaces UART00 and UART01.
• Asynchronous serial interface mode registers 0, 1 (ASIM00, ASIM01)
• Asynchronous serial interface status registers 0, 1 (ASIS00, ASIS01)
• Baud rate generator control registers 0, 1 (BRGC00, BRGC01)
(1) Asynchronous serial interface mode registers 0, 1 (ASIM00, ASIM01)
ASIM00 and ASIM01 are 8-bit registers that control the serial transfer operation of the asynchronous serial
interface.
These registers are set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears these registers to 00H.
Caution Set the port mode register (PM2x) in the UART mode, as shown below. Set each output latch
to 0.
• For reception
• For transmission
• For transmission and reception
Set P20 (RxD00) and P22 (RxD01) to input mode (PM20 = 1, PM22 = 1)
Set P21 (TxD00) and P23 (TxD01) to output mode (PM21 = 0, PM23 = 0)
Set P20 and P22 to input mode and P21 and P23 to output mode.
CHAPTER 12 SERIAL INTERFACES UART00 AND UART01
User’s Manual U13029EJ7V1UD
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