UPD75P238 Datasheet, PDF (1/50 Pages) NEC – 4-BIT SINGLE CHIP MICROCOMPUTER

DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75P238
4-BIT SINGLE CHIP MICROCOMPUTER
DESCRIPTION
The µPD75P238 is a version of the µPD75238 in which the on-chip mask ROM is replaced by one-time PROM or
EPROM.
The one-time PROM version can be written to once only, and is useful for short-run and multiple device-
production of sets and early start-up. Also, the EPROM version allows programs to be written and rewritten, and
is thus ideal for system evaluation.
Functions are described in detail in the following User's Manual, which should be read when carrying out design
work.
µPD75238 User's Manual : IEU-731
The µPD75P238 EPROM product does not provide a level of reliability suitable for use as a volume
production product for users' devices. The EPROM product should be used solely for function evaluation
in experiments of preproduction.
FEATURES
o µPD75238 pin compatible
o High-voltage display outputs
o On-chip PROM: 32640 × 8
. S0 to S8 & T0 to T9
: Internal pull-down resistors
o On-chip RAM: 1024 × 4
. S9, S16 to S23 & T10 to T15: Open-drain
o Drive capability in same supply voltage range as mask version µPD75238 (2.7 to 6.0 V)
o Ports 4 & 5: No pull-up resistor
o Port 7: No pull-down resistor
Note No internal pull-up and pull-down resistor function by mask option.
USE
VCR, Audio-visual, ECR, Microwave oven
ORDERING INFORMATION
Ordering Code
Package
µPD75P238GJ-5BG
94-pin plastic QFP(s20 mm)
µPD75P238KF
94-pin ceramic WQFN
On-Chip ROM
One-time PROM
EPROM
Quality Grade
Standard
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.
This manual describes common parts of One-time PROM and EPROM products as PROM.
The information in this document is subject to change without notice.
Document No. IC-2596A
(O.D. No. IC-8014A)
Date Published February 1994 P
Printed in Japan
The mark 5 shows major revised points.
© NEC Corporation 1992