upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 256

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(1) Transmit buffer register 10 (SOTB10)
(2) Serial I/O shift register 10 (SIO10)
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This register sets the transmit data.
Transmission/reception is started by writing data to SOTB10 when bit 7 (CSIE10) and bit 6 (TRMD10) of serial
operation mode register 10 (CSIM10) is 1.
The data written to SOTB10 is converted from parallel data into serial data by serial I/O shift register 10, and
output to the serial output pin (SO10).
SOTB10 can be written or read by an 8-bit memory manipulation instruction.
Reset signal generation sets this register to 00H.
Caution Do not access SOTB10 when CSOT10 = 1 (during serial communication).
This is an 8-bit register that converts data from parallel data into serial data and vice versa.
This register can be read by an 8-bit memory manipulation instruction.
Reception is started by reading data from SIO10 if bit 6 (TRMD10) of serial operation mode register 10 (CSIM10)
is 0.
During reception, the data is read from the serial input pin (SI10) to SIO10.
Reset signal generation sets this register to 00H.
Caution Do not access SIO10 when CSOT10 = 1 (during serial communication).
CHAPTER 11 SERIAL INTERFACE CSI10
Preliminary User’s Manual U19014EJ1V0UD