7751 Datasheet, PDF (54/540 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER

INPUT/OUTPUT PINS
3.1 Programmable I/O ports
Ports P80/CTS0/RTS0, P81/CLK0,
P84/CTS1/RTS1, P85/CLK1
Data bus
“1”
“0”
Direction register
Port latch
Output
E output pin
Fig. 3.1.5 Port peripheral circuits (2)
7751 Group User’s Manual
3–7