17P012 datasheet(97/320 Pages) RENESAS

97 / 320 page

µPD17012, 17P012

Data Sheet U10101EJ4V0DS

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.

b15 b14 b13 b12 b11 b10

Name

Peripheral register

Symbol

PYA

Valid data

42H

Sets output data of port YA

Port YA

group

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

Low-level output

High-level output

Data buffer

DBF3

DBF2

DBF1

DBF0

Transfer data

GET can be executed

PUT can be executed

Peripheral

address

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.

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