UPD6P8 NEC [NEC], UPD6P8 Datasheet - Page 65

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

13.2 Serial Communication Format
output at the falling edge of SCLK.
MD4 to MD0
05
0C
0E
11
08
01
MD4
Perform initialization according to the following procedure.
(1) Supply 3 V to the V
(2) Supply 3 V (same potential as V
(3) Wait for 2 ms until oscillation stabilizes.
(4) Supply 10.5 V to the V
(5) Wait for 1 ms until oscillation stabilizes.
(6) Transmit the PCRESET instruction from the programmer.
(7) Transmit the SSVERIFY instruction from the programmer for silicon signature verification.
All instructions consist of a 5-bit instruction and 5-bit data.
The data from the programmer is latched at the rising edge of SCLK. The µ PD6P8A and 6P8B output data is
Instruction format
4
MD3
3
V
V
DD
PP
V
Reset
Verify
Program
Increment
Signature verify
Inhibit
PP
MD2
2
(10.5 V)
Instruction
GND
GND
V
V
DD
DD
MD1
1
1
10 s
DD
MD0
µ
2
0
pin. Set the V
PP
pin.
Clearing the program memory address to 0
Verify mode
Write mode
Incrementing of the program memory address
Silicon signature verify mode
Program inhibit mode
3
DD
Instruction
) to the V
4
Data Sheet U17848EJ3V0DS
PP
5
pin to low level.
PP
pin after waiting for 10 µ s.
6
Data
Function
µ PD6P8, 6P8A, 6P8B
7
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