DATA SHEET
MOS Integrated Circuit
µ
PD78P328
16/8-BIT SINGLE-CHIP MICROCONTROLLER
The
µ
PD78P328 is a product provided by replacing the
µ
PD75328's internal mask ROM with one-time
PROM or EPROM.
The one-time PROM version is programmable only once and is useful for small-lot production of many
different products and early development and time-to-market of application sets.
The EPROM version is reprogrammable, and suited for the evaluation of systems.
Functions are described in detail in the following user's manual. Be sure to read it before designing.
µ
PD78328 User's Manual: IEU-1268
FEATURES
•
•
µ
PD78328 compatible
• For mass-production, the
µ
PD78P328 can be replaced with the
µ
PD78328 incorporating mask ROM
Internal PROM: 16,384 x 8 bits
• Programmable once only (one-time PROM version without window)
• Erasable with ultraviolet rays and electrically programmable (EPROM version with window)
•
•
PROM programming characteristics:
µ
PD27C256A compatible
The
µPD78P328
is a QTOP
TM
microcontroller.
Remark
QTOP microcontroller is a general term for microcontrollers which incorporates one-time PROM, and
are totally supported by NEC's programming service (from programming to marking, screening, and
verification).
ORDERING INFORMATION
Part Number
Package
64-pin plastic shrink DIP (750 mils)
64-pin plastic QFP (14 x 20 mm)
64-pin ceramic shrink DIP (750 mils) (with window)
Internal ROM
One-time PROM
One-time PROM
EPROM
µ
PD78P328CW
µ
PD78P328GF-3BE
µ
PD78P328DW
Functions common to the one-time PROM and EPROM versions are referred to as PROM functions throughout this document.
The information in this document is subject to change without notice.
Document No. U10209EJ4V0DS00 (4th edition)
(Previous No. IC-2486)
Date Published October 1995 P
Printed in Japan
The mark
*
shows revised points.
©
NEC Corporation 1990
µ
PD78P328
(2) PROM programming mode (RESET = H, AV
DD
= L)
• 64-pin plastic shrink DIP (750 mils)
µ
PD78P328CW
• 64-pin ceramic shrink DIP (750 mils) (with window)
µ
PD78P328DW
A9
(G)
(L)
OE
CE
(L)
A8
A10
A11
A12
A13
A14
(L)
V
SS
(G)
(Open)
RESET
A0
A1
A2
A3
A4
A5
A6
A7
V
PP
(L)
V
SS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
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
37
36
35
34
33
V
DD
AV
DD
(G)
V
DD
(L)
D7
D6
D5
D4
D3
D2
D1
D0
(Open)
(L)
Caution The recommended connection of the unused pins in the PROM programming mode are indicated
in parentheses.
L
G
:
:
Connect each pin to V
SS
via a resistor.
Connect the pin to V
SS
.
Leave the pin unconnected.
Open :
5
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