UPD78F0988AGC-8BS Renesas Electronics America, UPD78F0988AGC-8BS Datasheet - Page 253

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

Specifications of UPD78F0988AGC-8BS

• Lead Free Status / Rohs Status: Supplier Unconfirmed

13.1 Function of Serial Interface SIO3
(1) Operation stop mode
(2) 3-wire serial I/O mode (fixed as MSB first)
Serial interface SIO3 has the following two modes.
This mode is used when serial transfers are not performed. For details, see 13.4.1 Operation stop mode.
This is an 8-bit data transfer mode using three lines: a serial clock line (SCK), serial output line (SO), and serial
input line (SI).
Since simultaneous transmit and receive operations are enabled in 3-wire serial I/O mode, the processing time
for data transfers is reduced.
The first bit of the serial transferred 8-bit data is fixed as the MSB.
3-wire serial I/O mode is useful for connection to a peripheral I/O incorporating a clock-synchronous serial
interface, a display controller, etc.
CHAPTER 13 SERIAL INTERFACE SIO3
User’s Manual U13029EJ7V1UD
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