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  NEC Electronic Components Datasheet  

UPD75P108B Datasheet

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 User’s Manual. Be sure to read for designations.
µPD751×× Series User’s 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 × 8 bits
Data memory (RAM)
: 512 × 4 bits
Correspondence to QTOP™ microcomputer
ORDERING INFORMATION
Ordering Code
Package
On-Chip ROM
µPD75P108BCW
µPD75P108BDW
µPD75P108BGF-3BE
64-pin plastic shrink DIP (750 mil)
64-pin ceramic shrink DIP (with window)
64-pin plastic QFP (14 × 20 mm, 1.0 mm pitch)
One-time PROM
EPROM
One-time PROM
Note There is no on-chip pull-up resistor function by means of a mask option.
5
QUALITY GRADE
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.
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


  NEC Electronic Components Datasheet  

UPD75P108B Datasheet

4-BIT SINGLE-CHIP MICROCOMPUTER

No Preview Available !

PIN CONFIGURATION (TOP VIEW)
64-pin plastic shrink DIP (750 mil)
64-pin ceramic shrink DIP
(with window)
P13/INT3
P12/INT2
P11/INT1
P10/INT0
PTH03
PTH02
PTH01
PTH00
TI0
TI1
P23
P22/PCL
P21/PTO1
P20/PTO0
P03/SI
P02/SO
P01/SCK
P00/INT4
P123
P122
P121
P120
P133
P132
P131
P130
P143
P142
P141
P140
VPP
VDD
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
µPD75P108B
64 VSS
63 P90
62 P91
61 P92
60 P93
59 P80
58 P81
57 P82
56 P83
55 P70
54 P71
53 P72
52 P73
51 P60
50 P61
49 P62
48 P63
47 X1
46 X2
45 RESET
44 P50
43 P51
42 P52
41 P53
40 P40
39 P41
38 P42
37 P43
36 P30/MD0
35 P31/MD1
34 P32/MD2
33 P33/MD3
2


Part Number UPD75P108B
Description 4-BIT SINGLE-CHIP MICROCOMPUTER
Maker NEC
Total Page 30 Pages
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