DATA SHEET
µ
PD78P324, 78P324(A)
16-/8-Bit Single-Chip Microcomputers
MOS INTEGRATED CIRCUIT
The
µ
PD78P324 is a product in which the
µ
PD78324’s 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
µ
PD78P324(A) is more reliable than the
µ
PD78P324. The
µ
PD78P324(A) is a product resulting from
the
µ
PD78324(A) whose internal mask ROM is replaced by a one-time PROM.
For details of functions, please refer to the following User’s Manual. Reading this manual is indispensable
especially for designing work.
µ
PD78322 User’s Manual: IEU-1248
FEATURES
q
µ
PD78324 compatible
• For mass-production, this can be replaced by the
µ
PD78324 incorporated in the mask ROM.
q
Minimum instruction run time: 250 ns (with the external clock operating at 16 MHz):
µ
PD78P324 & 78P324(A)
320 ns (with the external clock operating at 12.5 MHz):
µ
PD78P324(A1) &
78P324(A2)
q
Internal PROM: 32768 x 8 bits
• Writing enabled only once (windowless one-time PROM product)
• Elimination by ultraviolet light and electrical rewriting enabled (EPROM product with window):
µ
PD78P324
only
q
ECC circuit incorporated
• High internal PROM content reliablility possible
q
PROM programming characteristic:
µ
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
µ
PD78P324: Fields dealing with motor control equipment.
q
µ
PD78P324(A), 78P324(A1), and 78P324(A2): Automotive and transportation equipments, etc.
This document describes the
µ
PD78P324, 78P324(A),
µ
PD78P324(A1), and
µ
PD78P324(A2) as well. However,
unless there are particular differences, the
µ
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
©
1991, 1995
µ
PD78P324, 78P324(A)
ORDERING INFORMATION
Part No.
Package
74-pin plastic QFP(20 x 20 mm)
68-pin plastic QFJ(s 950 mil)
s
68-pin ceramic WQFN
74-pin ceramic WQFN
74-pin plastic QFP(20 x 20 mm)
74-pin plastic QFP(20 x 20 mm)
74-pin plastic QFP(20 x 20 mm)
68-pin plastic QFJ(s 950 mil)
s
68-pin plastic QFJ(s 950 mil)
s
68-pin plastic QFJ(s 950 mil)
s
Internal ROM
One-time PROM
One-time PROM
EPROM
EPROM
One-time PROM
One-time PROM
One-time PROM
One-time PROM
One-time PROM
One-time PROM
Operating Temperature (T
A
)
–10 to +70
°C
–10 to +70
°C
–10 to +70
°C
–10 to +70
°C
–40 to +85
°C
–40 to +110
°C
–40 to +125
°C
–40 to +85
°C
–40 to +110
°C
–40 to +125
°C
µ
PD78P324GJ-5BJ
µ
PD78P324LP
µ
PD78P324KC
µ
PD78P324KD
µ
PD78P324GJ(A)-5BJ
µ
PD78P324GJ(A1)-5BJ
µ
PD78P324GJ(A2)-5BJ
µ
PD78P324LP(A)
µ
PD78P324LP(A1)
µ
PD78P324LP(A2)
QUALITY GRADE
Part No.
Quality Grade
Standard
Standard
Standard
Standard
Special
Special
Special
Special
Special
Special
µ
PD78P324GJ-5BJ
µ
PD78P324LP
µ
PD78P324KC
µ
PD78P324KD
µ
PD78P324GJ(A)-5BJ
µ
PD78P324GJ(A1)-5BJ
µ
PD78P324GJ(A2)-5BJ
µ
PD78P324LP(A)
µ
PD78P324LP(A1)
µ
PD78P324LP(A2)
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.
2
µ
PD78P324, 78P324(A)
DIFFERENCES AMONG
µ
PD78P324, 78P324(A), 78P324(A1), AND 78P324(A2)
Product Name
Parameter
Quality grade
Operating ambient tempera-
ture (T
A
)
Operating frequency
Minimum instruction
execution time
Permissible pin injection
current characteristics on
overvoltage application
DC characteristics
AC characteristics
A/D converter characteristics
One-time PROM product
EPROM product
Provided
Standard
–10 to +70
°C
–40 to +85
°C
Special
–40 to +110
°C
–40 to +125
°C
µ
PD78P324
µ
PD78P324(A)
µ
PD78P324(A1)
µ
PD78P324(A2)
8 to 16 MHz
250 ns (when operated at 16 MHz)
8 to 12.5 MHz
320 ns (when operated at 12.5 MHz)
None
Provided
Differ in the analog pin input leak current, the V
DD
supply current, and the data retention
current.
Differ in the bus timing.
Differ in the analog input voltage and the A/D converter data retention current.
Provided
None
3
µ
PD78P324, 78P324(A)
PIN CONFIGURATION (Top View)
(1) Normal operation mode
(a) 74-pin plastic QFP(20 x 20 mm); 74-pin ceramic WQFN
P42/AD2
P41/AD1
P40/AD0
ASTB
P90/RD
P91/WR
P92/TAS
P93/TMD
V
SS
EA
P07/RTP7
P06/RTP6
P05/RTP5
P04/RTP4
P03/RTP3
P02/RTP2
P01/RTP1
NC
74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
P43/AD3
P44/AD4
P45/AD5
P46/AD6
P47/AD7
P50/A8
P51/A9
P52/A10
P53/A11
P54/A12
P55/A13
NC
P56/A14
P57/A15
V
DD
AV
SS
P70/AN0
P71/AN1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
PØ0/RTP0
WDTO
V
SS
NC
X1
X2
RESET
P85/TO11
P84/TO10
P83/TO03
P82/TO02
P81/TO01
P80/TO00
NC
P34/SCK
P33/SI/SB1
P32/SO/SB0
P31/R
X
D
P30/T
X
D
Caution
As a measure against noise, please connect the NC pin to V
SS
. (It is also possible to leave this pin
unconnected.)
Remark
Pin-compatible with
µ
PD78324GJ.
4
NC
P72/AN2
P73/AN3
P74/AN4
P75/AN5
P76/AN6
P77/AN7
AV
REF
AV
DD
V
DD
P20/NMI
P21/INTP0
P22/INTP1
P23/INTP2
P24/INTP3
P25/INTP4
P26/INTP5
P27/INTP6
NC
µ
PD78P324GJ(A2)-5BJ
µ
PD78P324GJ-5BJ
µ
PD78P324GJ(A1)-5BJ
µ
PD78P324GJ(A)-5BJ
µ
PD78P324KD
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