PD17012_15 Datasheet, PDF (92/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
10.6 General-Purpose Output Ports (P2E to P2H and PYA)
10.6.1 Configuration of output ports (P2E to P2H and PYA)
The configuration of the output ports is shown below.
(1) P2E (P2E0 pin)
P2F (P2F0 pin)
P2G (P2G0 pin)
P2H (P2H0 pin)
LCD/port
VDD
select flag
1
0
Segment signal
timing control
Output
latch
Write instruction
Port register
(1 bit)
Also used as LCD
segment register
(2) PYA (PYA15 to PYA0)
VDD
LCD/port
select flag
Read instruction
1
0
Segment signal
key source
timing control
Output
latch
Write instruction
(PUT)
PYA group
register
(1 bit),
Also used as
key source data
register
Read instruction
(GET)
LCD segment register
90
Data Sheet U10101EJ4V0DS