Data Sheet U13594EJ2V1DS00

23

µPD6P4B

6. APPLIED CIRCUIT EXAMPLE

Example of Application to System

• Remote-control transmitter (40 keys; mode selection switch accommodated)

• Remote-control transmitter (48 keys accommodated)

Remark When the POC circuit is used effectively, it is not necessary to connect the capacitor enclosed in the

dotted lines.

KI/O6

KI/O7

S0

S1/LED

REM

VDD

XOUT

XIN

GND

RESET

KI/O5

KI/O4

KI/O3

KI/O2

KI/O1

KI/O0

KI3

KI2

KI1

KI0

Key matrix

8

× 6 = 48 keys

+

+

KI/O6

KI/O7

S0

S1/LED

REM

VDD

XOUT

XIN

GND

RESET

KI/O5

KI/O4

KI/O3

KI/O2

KI/O1

KI/O0

KI3

KI2

KI1

KI0

Key matrix

8

× 5 = 40 keys

Mode selection switch

+

+