UPD780204 datasheet(87/418 Pages) NEC

Part #	UPD780204

Description	8-Bit Single-Chip Microcontrollers

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Manufacturer	NEC [NEC]

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CHAPTER 4

PORT FUNCTIONS

87

User’s Manual U11302EJ4V0UM

Figure 4-6. Block Diagram of P22 and P27

PUO: Pull-up resistor option register

PM:

Port mode register

RD:

Port 2 read signal

WR:

Port 2 write signal

P-ch

WRPM

WRPORT

RD

WRPUO

VDD

P22/SCK1,

P27/SCK0

Selector

PUO2

Output latch

(P22, P27)

PM22, PM27

Alternate function

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