UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 255

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

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

13.3 Register Controlling Serial Interface
(1) Serial operation mode register 3 (CSIM3)
Serial interface SIO3 is controlled by the following register.
• Serial operation mode register 3 (CSIM3)
This register is used to enable or disable the SIO3 serial clock, operation modes, and specific operations.
CSIM3 can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets CSIM3 to 00H.
Caution
When using the 3-wire serial I/O mode, set the port mode registers (PM5x) as shown below.
Also, set the respective output latches to 0.
• For serial clock output (master transmit/receive)
• For serial clock input (slave transmit/receive)
• For transmit/transmit and receive mode
• For receive mode
Set P51 (SCK) to the output mode (PM51 = 0).
Set P51 to the input mode (PM51 = 1).
Set P53 (SO) to the output mode (PM53 = 0).
Set P52 (SI) to the input mode (PM52 = 1) (in transmit/receive mode).
Set P52 (SI) to the input mode (PM52 = 1).
CHAPTER 13 SERIAL INTERFACE SIO3
User’s Manual U13029EJ7V1UD
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