7470 Datasheet, PDF (28/47 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

MITSUBISHI MICROCOMPUTERS
7470/7471 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Port P2
Data bus
Pull-up control register*
Data bus
Direction register
Port latch
* : Control in units of 4-bit
Tr10
Port P2
A-D conversion circuit
Multi-
plexer
Port P3
Port P3
Data bus
INT0, INT1
CNTR0, CNTR1
Port P4
Data bus
Data bus
* : Control in units of 4-bit (Control in units of 2-bit for 7470 group)
Pull-up control register*
Tr11
Direction register
Port latch
Port P4
Fig. 19 Block diagram of ports P2–P4
Tr10–Tr11 are pull-up transistors
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