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7480

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Renesas Electronics 

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MITSUBISHI MICROCOMPUTERS

7480/7481 GROUP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

Ports P14 – P17

Data bus

SIOE

SIOM

SRDY

Direction register

Port latch

SCS

SIOE

SIOM

SIOE

Direction register

Data bus

Port latch

SRDY

Data bus

SIOE

TE

SCLK output

Direction register

Port latch

SIOE

RE

Direction register

TXD

Data bus

Port latch

Data bus

Pull-up control

register

Tr6 to Tr9 are pull-up transistors.

Tr6

Port P17

Tr7

SCLK input

Port P16

Tr8

Port P15

RXD

Tr9

Port P14

Fig. 13 Block diagram of ports (2)

15

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