MOS INTEGRATED CIRCUIT
µPD6P8, 6P8A, 6P8B
4-BIT SINGLE-CHIP MICROCONTROLLER
FOR INFRARED REMOTE CONTROL TRANSMISSION
The µPD6P8, 6P8A, 6P8B are microcontrollers for infrared remote control transmitters and are provided with
a one-time PROM as the program memory.
Because users can write programs for the µPD6P8, 6P8A, 6P8B, They are ideal for program evaluation and small-
scale production of application systems that use the µPD67A, 67B, 68A, 68B.
When reading this document, also refer to the following documents.
µPD67, 67A, 68, 68A, 69 Data Sheet: U14935E
µPD67B, 68B Data Sheet:
• Program memory (one-time PROM):
2026 × 10 bits
• Data memory (RAM):
32 × 4 bits
• On-chip carrier generator for infrared remote control: The high-level and low-level width can be set separately
from 250 ns to 64 µs (@ fX = 4 MHz operation) via modulo
• 9-bit programmable timer:
• Instruction execution time:
16 µs (@ fX = 4 MHz)
• Stack level:
1 level (stack RAM is for data memory RF as well)
• I/O pins (KI/O):
• Input pins (KI):
www.DataSheet4U•.coSmense input pins (S0, S2):
• S1/LED pin (I/O):
1 unit (when in output mode, this is the remote control
transmission display pin)
• Power supply voltage:
VDD = 1.9 to 3.6 V
• Operating ambient temperature:
TA = –40 to +85°C
• Oscillator frequency:
fX = 3.5 to 4.5 MHz
• On-chip POC circuit and RAM retention detector
• On-chip oscillator (µPD6P8B)
Infrared remote control transmitters (for AV and household electric appliances)
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. U17848EJ3V0DS00 (3rd edition)
Date Published December 2007 N
Printed in Japan
The mark <R> shows major revised points.