UPD6P8 NEC [NEC], UPD6P8 Datasheet - Page 92

• Manufacturer Part Number: UPD6P8
• Description: MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION
• Manufacturer: NEC [NEC]

92
REM output
(5) Carrier waveform (enlarged waveform of each code’s high period)
(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
µ
C
5
C
6
C
7
26.3 s
Data Sheet U17848EJ3V0DS
C
C
C
or
0
0
8
’
C
C
C
µ
or
1
1
9
’
Custom code’
C
C
C
or
10
2
2
’
C
C
C
or
11
3
3
9 ms or 0.56 ms
Carrier frequency: 38 kHz
’
C
C
C
or
12
4
4
’
C
C
C
or
13
5
5
’
C
C
C
or
14
6
6
’
C
C
C
or
15
7
7
’
D
0
D
1
D
Data code
2
D
3
D
4
D
5
D
µ PD6P8, 6P8A, 6P8B
6
D
7
D
0
D
1
D
Data code
2
D
3
D
4
D
5
D
6
D
7