UPD62 NEC [NEC], UPD62 Datasheet - Page 55
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UPD62
Manufacturer Part Number
UPD62
Description
4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
Manufacturer
NEC [NEC]
Datasheet
1.UPD62.pdf
(64 pages)
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13. 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 of the mask option is used effectively, it is not necessary to connect the capacitor
+
enclosed in the dotted lines.
+
+
+
K
K
S
S
REM
V
X
X
GND
RESET
I/O6
I/O7
0
1
DD
OUT
IN
/LED
K
K
S
S
REM
V
X
X
GND
RESET
I/O6
I/O7
0
1
DD
OUT
IN
/LED
Data Sheet U14208EJ1V0DS00
K
K
K
K
K
K
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
K
K
K
K
I3
I2
I1
I0
K
K
K
K
K
K
I/O5
I/O4
I/O3
I/O2
I/O1
I/O0
K
K
K
K
I3
I2
I1
I0
Key matrix
8
5 = 40 keys
Key matrix
8
6 = 48 keys
Mode selection switch
PD62
55