µPD6121, 6122
8. APPLICATION CIRCUIT EXAMPLE
(1) Example application circuit using µPD6121
Ceramic resonator
455 kHz
+
3V
OSCO OSCI
VDD
LMP
SEL
µPD6121G-001
CCS
KI0
KI3 KI/O0
VDD
VDD
(2) Example application circuit using µPD6122
Ceramic resonator
455 kHz
+
3V
OSCO OSCI
VDD
LMP
SEL
µPD6122G-001
CCS
KI0
KI7 KI/O0
VDD
VDD
REM
VSS
Infrared-emitting diode
SE303A-C
SE307-C
SE313
SE1003-C
2SC2001, 3616
2SD1513, 1616
2SD1614
KI/O7
Custom code selection resistor
Key matrix
=
8 x 4 = 32 keys
Custom code selection diode
REM
VSS
Infrared-emitting diode
SE303A-C
SE307-C
SE313
SE1003-C
2SC2001, 3616
2SD1513, 1616
2SD1614
KI/O7
Custom code selection resistor
Key matrix
8 x 8 = 64 keys
Custom code selection diode
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