4-Bit Single Chip-Microcomputer
The µPD75116(A) is one of the 4-bit single-chip micro-
computer 75X series.
The µPD75116(A) is a product with the extended ROM
capacity of the µPD75108(A). In addition of high-speed
operations, it can manipulate data in units of 1, 4 and 8
bits. In particular, the I/O operation of the µPD75116
have been improved by a wide variety of bit control
instructions. The µPD75116 is provided with interface
inputs/outputs with peripheral circuits having different
power voltages, and analog inputs and suitable for
controlling automobile electrical equipment, etc. For
the µPD75116(A), an on-chip pin-compatible one-time
PROM product (µPD75P116) is separately available for
system development evaluation.
Functions are described in detail in the following User’s
Manual, which should be read when carrying out
µPD751×× Series User’s Manual: IEM-992
µPD75112CW(A)-××× 64-pin plastic shrink DIP
µPD75112GF(A)-×××-3BE 64-pin plastic QFP
(14 × 20 mm)
µPD75116CW(A)-××× 64-pin plastic shrink DIP
µPD75116GF(A)-×××-3BE 64-pin plastic QFP
(14 × 20 mm)
Remarks: ××× is a ROM code number.
Please refer to "Quality Grade on NEC Semicon-
ductor Devices" (Document number IEI-1209) pub-
lished by NEC Corporation to know the specifica-
tion of quality grade on the devices and its recom-
Unless there are any particular functional differences,
the µPD75116(A) is described in this document as a
• Higher reliability than µPD75116
• Architecture "75X" equivalent to 8-bit microcomputer
• Minimum instruction execution time (high-speed
operation): 0.95 µs (when operated at 4.19 MHz and
• Instruction execution variable function: 0.95µs/1.91µs/
15.3 µs (when operated at 4.19 MHz)
• Many input/output ports: 58
• 3-channel on-chip 8-bit timers
• 8-bit on-chip serial interface
• Multi-interruptible vector interrupt function
Automobile electrical equipment, etc.
Document No. IC-2811A
(O. D. No. IC-8261A)
Date Published March 1994 P
Printed in Japan
The information in this document is subject to change without notice.
5The mark shows major revised points.
©NEC Corporation 1990