upd63a Renesas Electronics Corporation., upd63a Datasheet - Page 62

• Manufacturer Part Number: upd63a
• Description: 4-bit Single-chip Microcontroller For Infrared Remote Control Transmission
• Manufacturer: Renesas Electronics Corporation.

62
(5) Carrier waveform (Enlarged waveform of each code’s high period)
REM output
(6) Bit array of each code
Leader code
Caution To prevent malfunction with other systems when receiving data in the NEC transmission
format, not only fully decode (make sure to check Data Code as well) the total 32 bits of the
16-bit custom codes (Custom Code, Custom Code’) and the 16-bit data codes (Data Code,
Data Code) but also check to make sure that no signals are present.
C
0
C
1
Custom code
C
2
C
3
8.77 s
C
4
C
5
C
6
C
7
26.3 s
C
C
C
or
0
0
o
'
C
C
C
or
1
1
1
'
Custom code'
C
C
C
or
2
2
2
'
C
C
C
or
3
3
3
'
9 ms or 0.56 ms
Carrier frequency : 38 kHz
C
C
C
or
4
4
4
'
C
C
C
or
5
5
5
'
C
C
C
or
6
6
6
'
C
C
C
or
7
7
7
'
D
0
D
1
D
Data code
2
D
3
D
4
D
5
D
6
D
7
D
0
D
1
D
PD63, 63A, 64
Data code
2
D
3
D
4
D
5
D
6
D
7