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UPD75P108B Datasheet, PDF (1/46 Pages) NEC – 4-BIT SINGLE-CHIP MICROCOMPUTER | |||
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD75P108B
4-BIT SINGLE-CHIP MICROCOMPUTER
DESCRIPTION
The µPD75P108B is a version of the µPD75108 in which the on-chip mask ROM is replaced by one-time
PROM which can be written to once only, or EPROM which is capable of program write, erasure and rewrite.
Also, since the µPD75P108B is capable of program write by a user, it can easily be exchanged with the mask
version, allowing evaluation at low voltage.
Detailed functional descriptions are shown in the following Userâs Manual. Be sure to read for designations.
µPD751Ãà Series Userâs Manual : IEM-922
FEATURES
⢠Version with on-chip PROM, allowing low-voltage operation VDD = 2.7 to 6.0 V
⢠µPD75108 compatible
⢠Memory capacity
⢠Program memory (PROM) : 8064 à 8 bits
⢠Data memory (RAM)
: 512 Ã 4 bits
⢠Correspondence to QTOP⢠microcomputer
ORDERING INFORMATION
Ordering Code
Package
On-Chip ROM
µPD75P108BCW
64-pin plastic shrink DIP (750 mil)
One-time PROM
µPD75P108BDW
64-pin ceramic shrink DIP (with window)
EPROM
5
µPD75P108BGF-3BE 64-pin plastic QFP (14 à 20 mm, 1.0 mm pitch)
One-time PROM
Note There is no on-chip pull-up resistor function by means of a mask option.
QUALITY GRADE
Standard
Please refer to âQuality grade on NEC Semiconductor Devicesâ (Document number IEI-1209) published by
NEC Corporation to know the specification of quality grade on the devices and its recommended applications.
In this ducument, common parts of one-time PROM products and EPROM products are represented as
PROM.
The information in this document is subject to change without notice.
Document No. IC-2580C
(O. D. No. IC-7987C)
Date Published December 1993 P
Printed in Japan
The mark 5 shows major revised points.
© NEC Corporation 1989
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