PD17012_15 Datasheet, PDF (94/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
10.6.4 PYA data setting
To set output data to PYA, execute the write the instruction “PUT PYA, DBF” to the port YA (PYA) group register
corresponding to each pin.
When the instruction “GET DBF, PYA”, which reads the contents of a PYA group register, is executed, the contents
of the output latch are read.
To output a high level to each pin, write 1 to the corresponding port register; to output a low level, write 0.
Figure 10-4. Relationship Between PYA Group Register and LCD Segment Register
LCD15/KS15/PYA15
LCD14/KS14/PYA14
PYASEL flag
1
0
1
0
Segment/key
source timing
control
Segment/key
source timing
control
LCD1/KS1/PYA1
LCD0/KS0/PYA0
1
0
Segment/key
source timing
control
1
0
Segment/key
source timing
control
b0 _LCDD15
b1
b2
(60H)
b0 _LCDD14
b1
b2
(61H)
b0 _LCDD1
b1
b2
(6EH)
b0 _LCDD0
b1
b2
(6FH)
b15
b14
KSR
PYA
b1
b0
92
Data Sheet U10101EJ4V0DS