PD17012_15 Datasheet, PDF (97/320 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLERS WITH DIGITAL TUNING SYSTEM HARDWARE

µPD17012, 17P012
10.6.7 Port YA (PYA) group register
The PYA group register sets the output data of the PYA pins (PYA0 through PYA15).
The PYA pins can set 16-bit output data all at once.
The function of the PYA group register is illustrated below.
DBF3
Data buffer
DBF2
DBF1
Transfer data
DBF0
Name
Port YA
group
register
GET can be executed
16
PUT can be executed
Peripheral register
b15 b14 b13 b12 b11 b10
b9
b8
b7
b6
b5
b4
b3
b2
b1
b0 Symbol
Peripheral
address
Valid data
PYA
42H
Sets output data of port YA
LCD0/KS0/PYA0 pin
LCD1/KS1/PYA1 pin
LCD2/KS2/PYA2 pin
LCD3/KS3/PYA3 pin
LCD4/KS4/PYA4 pin
LCD5/KS5/PYA5 pin
LCD6/KS6/PYA6 pin
LCD7/KS7/PYA7 pin
LCD8/KS8/PYA8 pin
LCD9/KS9/PYA9 pin
LCD10/KS10/PYA10 pin
LCD11/KS11/PYA11 pin
LCD12/KS12/PYA12 pin
LCD13/KS13/PYA13 pin
LCD14/KS14/PYA14 pin
LCD15/KS15/PYA15 pin
0
Low-level output
1
High-level output
Port YA is alternately used with key source signal output pins.
Therefore, the PYA group register (peripheral address: 42H) is alternately used with the key source data register
(peripheral address: 42H), which is to be described later.
Consequently, the PYA group register is used to set the output data of port YA when the LCD0/KS0/PYA0 to LCD15/
KS15/PYA15 pins are specified as output port pins, and key source signal output data when these pins are specified
as key source signal output pins.
Data Sheet U10101EJ4V0DS
95