UPD75237 Datasheet, PDF (1/191 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75237
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD75237 is a microcomputer with a CPU capable of 1-, 4-, and 8-bit-wise data processing, a ROM, a RAM,
I/O ports, a fluorescent display tube (FIP ^®) controller/driver, A/D converters, a watch timer, a timer/pulse generator
capable of outputting 14-bit PWM, a serial interface and a vectored interrupt function integrated on a single-chip.
The µPD75237 has the more improved peripheral functions including the RAM capacity, FIP controller/driver
display capabilities, I/O ports, A/D converter and serial interface than those of the µPD75217.
The µPD75237 is most suited for advanced and popular VCR timer and tuner applications, single-chip configu-
rations of system computers, advanced CD players and advanced microwave ovens.
The µPD75P238 PROM product and various types of development tools (IE-75001-R, assemblers and others) are
available for evaluation in system development or small-volume production.
FEATURES
q Built-in, large-capacity ROM and RAM
• Program memory (ROM): 24K × 8
• Data memory (RAM): 1K × 4
q I/O port: 64 ports (except FIP dedicated pins)
q Minimum instruction execution time: 0.67 µs (when
operated at 6.0 MHz)
q Instruction execution time varying function to achieve
a wide range of power supply voltages
q Built-in programmable FIP controller/driver
• Number of segments: 9 to 24
• Number of digits: 9 to 16
q 8-bit A/D converter: 8 channels
q Powerful timer/counter function: 5 channels
q 8-bit serial interface: 2 channels
q Interrupt function with importance attached to appli-
cations
q Product with built-in PROM: µPD75P238
ORDERING INFORMATION
Ordering Code
Package
Quality Grade
µPD75237GJ-×××-5BG
94-pin plastic QFP (20 × 20 mm)
Standard
Please refer to “Quality grade on NEC Semiconductor Devices” (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
Document No. IC-2807A
(O. D. No. IC-8009A)
Date Published March 1993 P
Printed in Japan
The information in this document is subject to change without notice.
The mark 5 shows major revised points.
© NEC Corporation 1991