UPD178004 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD178004

8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

SI0/SB0/SDA0/P25

SO0/SB1/SDA1/P26

SCK0/SCL/P27

µPD178004, 178006, 178016, 178018

Figure 5-8. Serial Interface Channel 0 Block Diagram

Internal Bus

Selector

Selector

Serial I/O Shift

Register 0 (SIO0)

Output

Latch

Bus Release/Command/

Acknowledge Detection

Circuit

Serial Clock Counter

Busy/Acknowledge

Output Circuit

Interrupt Request

Signal Generator

INTCSI0

Serial Clock

Control Circuit

Selector

fXX/2-fXX/28

Figure 5-9. Serial Interface Channel 1 Block Diagram

Internal Bus

Automatic Data Transmit/

Receive Address Pointer

(ADTP)

SI1/P20

SO1/P21

STB/P23

BUSY/P24

SCK1/P22

Handshake

Control

Circuit

Buffer RAM

Serial I/O Shift Register 1 (SIO1)

Automatic Data

Transmit/Receive

Interval Specification

Register (ADTI)

Match

5-Bit Counter

Serial Counter

Serial Clock Control Circuit

Interrupt Request

Signal Generator

INTCSI1

Selector

f XX/2-f XX/28

20

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