UPD6125A Datasheet, PDF (1/40 Pages) NEC – 4-BIT SINGLE CHIP MICROCONTROLLER FOR REMOTE CONTROL TRANSMISSION

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD6125A, 6126A
4-BIT SINGLE CHIP MICROCONTROLLER
FOR REMOTE CONTROL TRANSMISSION
DESCRIPTION
The µPD6125A and 6126A are 4-bit single-chip microcontrollers for infrared remote controllers for TVs, VCRs,
stereos, cassette decks, air conditioners, etc.
These microcontrollers consist of ROM, RAM, a 4-bit parallel-processing ALU, a programmable timer, key input/
output ports, and transmit output ports. Functioning is controlled in software.
FEATURES
• Transmitter for programmable infrared remote
controller
• 19 types of instructions
• Instruction execution time: 17.6 µs (with 455-kHz
ceramic oscillator)
• Program memory (ROM) capacity: 1002 × 10 bits
• Data memory (RAM) capacity: 32 × 5 bits
• 9-bit programmable timer: 1 channel
• I/O pins (KI/O): 8 pins
• I/O pins (I/O)
• µPD6125A: 4 pins
• µPD6126A: 8 pins
• Input pins (KI): 4 pins
• Serial input pins (S-IN): 1 pin
• Transmission-in-progress indication pin (S-OUT):
1 pin
• Transmit carrier frequency (REM)
fOSC/12, fOSC/8
• Standby operation (HALT/STOP mode)
• Low power consumption
• Current consumption in STOP mode (TA = 25°C)
1 µA MAX.
• Low-voltage operation: VDD = 2.0 to 6.0 V
Caution To use the NEC transmission format, ask NEC to supply the custom code.
The mask option (PLA data) setting of µPD6125A, µPD6126A is different from that of the µPD6125,
6126.
When a register is used as the operand of a branch instruction, do not use R0.
The information in this document is subject to change without notice.
Document No. U12392EJ4V0DS00 (4th edition)
(Previous No. IC-2014B)
The mark shows major revised points.
Date Published May 1997 N
Printed in Japan
©
1989