UPD6P9 datasheet(64/73 Pages) RENESAS

64 / 73 page

µPD67, 67A, 68, 68A, 69

Data Sheet U14935EJ2V1DS

• Remote-control transmitter (56 keys supported, mode selection switch supported)

Data can be read from the KI/O0 to KI/O7 pins by connecting a pull-up resistor of 50 k

Ω and a switch to these

pins (which then become high level when the switch is on and low level when off). Set the KI/O0 to KI/O7 pins

to input mode at this time. Reading data from these pins enables multiple output data to be obtained for the

same key input.

A pull-up resistor can be connected to any of pins KI/O0 to KI/O7 (the figure below shows an example of when

a pull-up resistor is connected to the KI/O5 pin).

The mode may not be correctly read while a key is being pressed.

Notes 1. When incorporation of a capacitor for oscillation has not been specified by a mask option.

2. S2: Set to enable for STOP mode release.

3. Set pins KI0 to KI3 to "with pull-down resistors".

KI/O6

KI/O7

S1/LED

REM

VDD

XOUT

Note 1

XIN

Note 1

GND

Note 2

KI/O5

KI/O4

KI/O3

KI/O2

KI/O1

KI/O0

KI3

Note 3

KI2

Note 3

KI1

Note 3

KI0

Note 3

Key matrix

× 7 = 56 keys

VDD

Mode selection switch

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