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UPD78P324LPA2 Datasheet

  • UPD78P324LPA2

  • 16-/8-Bit Single-Chip Microcomputers

  • 80頁

  • NEC   NEC

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DATA SHEET
碌
PD78P324, 78P324(A)
16-/8-Bit Single-Chip Microcomputers
MOS INTEGRATED CIRCUIT
The
碌
PD78P324 is a product in which the
碌
PD78324鈥檚 internal mask ROM is replaced by a one-time PROM
or EPROM. The one-time PROM product, which enables writing only once, is effective for multiple-device
small production of sets or early start of mass-production. The EPROM product, which enables program
writing, deletion, and rewriting, is the most suitable for system evaluation.
The
碌
PD78P324(A) is more reliable than the
碌
PD78P324. The
碌
PD78P324(A) is a product resulting from
the
碌
PD78324(A) whose internal mask ROM is replaced by a one-time PROM.
For details of functions, please refer to the following User鈥檚 Manual. Reading this manual is indispensable
especially for designing work.
碌
PD78322 User鈥檚 Manual: IEU-1248
FEATURES
q
碌
PD78324 compatible
鈥?For mass-production, this can be replaced by the
碌
PD78324 incorporated in the mask ROM.
q
Minimum instruction run time: 250 ns (with the external clock operating at 16 MHz):
碌
PD78P324 & 78P324(A)
320 ns (with the external clock operating at 12.5 MHz):
碌
PD78P324(A1) &
78P324(A2)
q
Internal PROM: 32768 x 8 bits
鈥?Writing enabled only once (windowless one-time PROM product)
鈥?Elimination by ultraviolet light and electrical rewriting enabled (EPROM product with window):
碌
PD78P324
only
q
ECC circuit incorporated
鈥?High internal PROM content reliablility possible
q
PROM programming characteristic:
碌
PD27C1001A compatible
q
QTOP
TM
microcomputer compatible
Remark
A QTOP microcomputer is a single-chip microcomputer with one-time PROM for which program
writing, marking, screening, and verifying is completely supported by NEC.
APPLICATION FIELDS
q
碌
PD78P324: Fields dealing with motor control equipment.
q
碌
PD78P324(A), 78P324(A1), and 78P324(A2): Automotive and transportation equipments, etc.
This document describes the
碌
PD78P324, 78P324(A),
碌
PD78P324(A1), and
碌
PD78P324(A2) as well. However,
unless there are particular differences, the
碌
PD78P324 is described as a representative product. PROM is
the representative term used for the part common to both the one-time PROM product and the EPROM
product.
The information in this document is subject to change without notice.
Document No. IC-2857
(O. D. No. IC-8315)
Date Published January 1995 P
Printed in Japan
漏
1991, 1995

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