
4-BIT SINGLE-CHIP MICROCOMPUTER
μ
PD75237
MOS INTEGRATED CIRCUIT
DATA SHEET
The information in this document is subject to change without notice.
NEC Corporation 1991
Document No.
(O. D. No.
Date Published March 1993 P
Printed in Japan
IC-2807A
IC-8009A)
The mark
#
shows major revised points.
DESCRIPTION
The
μ
PD75237 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
μ
PD75237 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
μ
PD75217.
The
μ
PD75237 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
μ
PD75P238 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
G
Built-in, large-capacity ROM and RAM
Program memory (ROM): 24K
×
8
Data memory (RAM): 1K
×
4
G
I/O port: 64 ports (except FIP dedicated pins)
G
Minimum instruction execution time: 0.67
μ
s (when
operated at 6.0 MHz)
G
Instruction execution time varying function to achieve
a wide range of power supply voltages
G
Built-in programmable FIP controller/driver
Number of segments: 9 to 24
Number of digits: 9 to 16
G
8-bit A/D converter: 8 channels
G
Powerful timer/counter function: 5 channels
G
8-bit serial interface: 2 channels
G
Interrupt function with importance attached to appli-
cations
G
Product with built-in PROM:
μ
PD75P238
ORDERING INFORMATION
Ordering Code
Package
Quality Grade
μ
PD75237GJ-
×××
-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.