UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 456

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

P30/SI1,
P13/SI2
P31/SO1,
P14/SO2
P25/SCK1,
P12/SCK2
RESET
CTXE1
CTXE2
N-ch Open-Drain
Output Possible
CRXE1
CRXE2
8
CSCK1, CSCK2
DIR2
DIR1
Figure 16-10 3-Wire Serial I/O Mode Block Diagram
CSCK1
CSCK2
Serial Clock Control Circuit
Direction Control Circuit
Internal Bus
Serial Clock Counter
Shift Register
8
8
D
Q
CSCK1, CSCK2
Interrupt Signal
Generator
SO Latch
Selector
INTCSI1, INTCSI2
Baud Rate Generator