M37470M2 Datasheet, PDF (26/46 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
7470/7471 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Ports P14–P17
Data bus
Direction register
Port latch
SM7
SM4
Tr6
Port P17
Data bus
SM2
SM3
Direction register
Port latch
SRDY
Tr7
Port P16
Data bus
CLK output
SM3
Direction register
Port latch
CLK input
SM7
Tr8
Port P15
SOUT
Data bus
Direction register
Port latch
Tr9
Port P14
Data bus
Pull-up control
register
SIN
Tr6–Tr9 are pull-up transistors
Fig. 18 Block diagram of ports P14–P17
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