PD62A_15 Datasheet, PDF (55/64 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION

13. APPLICATION CIRCUIT EXAMPLE
Example of Application to System
• Remote-control transmitter (40 keys; mode selection switch accommodated)
µPD62A
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
• Remote-control transmitter (48 keys accommodated)
Mode selection switch
Key matrix
8 × 5 = 40 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 × 6 = 48 keys
Remark When the POC circuit of the mask option is used effectively, it is not necessary to connect the capacitor
enclosed in the broken lines.
Data Sheet U14474EJ2V0DS00
53