UPD78F0078GK-9ET-A Renesas Electronics America, UPD78F0078GK-9ET-A Datasheet - Page 313

• Manufacturer Part Number: UPD78F0078GK-9ET-A
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0078GK-9ET-A

• Lead Free Status / Rohs Status: Supplier Unconfirmed

16.2 Configuration of Serial Interface SIO3
(1) Serial I/O shift register 3 (SIO3)
16.3 Registers to Control Serial Interface SIO3
(1) Serial operation mode register 3 (CSIM3)
Serial interface SIO3 includes the following hardware.
Serial interface SIO3 is controlled by the following three registers.
• Serial operation mode register 3 (CSIM3)
• Port mode register 3 (PM3)
• Port register 3 (P3)
Caution
This is an 8-bit register that performs parallel-serial conversion and serial transmit/receive (shift operations)
synchronized with the serial clock.
When bit 7 (CSIE3) of serial operation mode register 3 (CSIM3) is set to 1, a serial operation can be started by
writing data to or reading data from SIO3.
When transmitting, data written to SIO3 is output to the serial output (SO3).
When receiving, data is read from the serial input (SI3) and written to SIO3.
SIO3 is set by an 8-bit memory manipulation instruction.
RESET input makes SIO3 undefined.
This register is used to set SIO3’s serial clock and operation modes, and to enable/disable operation of SIO3.
CSIM3 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears CSIM3 to 00H.
Register
Control registers
Do not access SIO3 during a transfer operation unless the access is triggered by a transfer
start (read operations are disabled when MODE3 = 0 and write operations are disabled when
MODE3 = 1).
Item
Table 16-1. Configuration of Serial Interface SIO3
CHAPTER 16 SERIAL INTERFACE SIO3
Serial I/O shift register 3 (SIO3)
Interrupt request signal generator
Serial clock controller
Serial operation mode register 3 (CSIM3)
Port mode register 3 (PM3)
Port register 3 (P3)
User’s Manual U14260EJ4V0UD
Configuration
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