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PDF WS57C71C-35T Data sheet ( Hoja de datos )

Número de pieza WS57C71C-35T
Descripción HIGH SPEED 32K x 8 CMOS PROM/RPROM
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo



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No Preview Available ! WS57C71C-35T Hoja de datos, Descripción, Manual

WS57C71C
HIGH SPEED 32K x 8 CMOS PROM/RPROM
Ultra-Fast Access Time
— 35 ns
Low Power Consumption
Fast Programming
KEY FEATURES
Immune to Latch-UP
— Up to 200 mA
ESD Protection Exceeds 2000V
Available in 300 Mil DIP and PLDCC
GENERAL DESCRIPTION
The WS57C71C is a High Performance 256K UV Erasable Electrically Re-Programmable Read Only Memory
(RPROM). It is manufactured in an advanced CMOS technology and utilizes WSI's patented self-aligned split gate
EPROM cell.
The industry standard PROM pin configuration of the WS57C71C provides an easy upgrade path from a 16K x 8
device.
This RPROM is capable of operating at speeds as fast as 35 ns address access time, which enables it to be used
directly with today's fast microprocessors and DSP processors without introducing any wait states. All inputs and
outputs are TTL compatible. The WS57C71C is a low power device even when operated at its fastest speed. The
DIP version is packaged in a 300 mil wide DIP package saving board space for the user.
BLOCK DIAGRAM
9
A6 - A14
ROW
ADDRESSES
ROW
DECODER
EPROM ARRAY
262,144 BITS
9
A0 - A5
COLUMN
ADDRESSES
CS1/ VPP
CS2
CS3
COLUMN
DECODER
SENSE
AMPLIFIERS
8
OUTPUTS
PIN CONFIGURATION
TOP VIEW
Chip Carrier
CERDIP
A9 1
A6
4
5
3
2
1
32 31 30
29
A12
A8 2
A7 3
A5 6
28 A13
A6 4
A4
A3
A2
A1
A0
NC
O0
7 27
8 26
9 25
10 24
11 23
12 22
13 21
14 15 16 17 18 19 20
A14
NC
CS3
CS2
CS1/VPP
O7
O6
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
O0 11
O1 12
O2 13
O1 O2 NC O3 O4 O5
GND 14
28 VCC
27 A10
26 A11
25 A12
24 A13
23 A14
22 CS3
21 CS2
20 CS1/VPP
19 O7
18 O6
17 O5
16 O4
15 O3
PRODUCT SELECTION GUIDE
PARAMETER
Address Access Time (Max)
CS to Output Valid Time (Max)
WS57C71C-35
35 ns
15 ns
WS57C71C-45
45 ns
20 ns
WS57C71C-55
55 ns
20 ns
WS57C71C-70
70 ns
30 ns
Return to Main Menu
2-55

1 page




WS57C71C-35T pdf
NORMALIZED SUPPLY CURRENT
vs.
SUPPLY VOLTAGE
1.60
1.40
1.20
1.00
0.80
0.60
4.0
4.5 5.0 5.5
SUPPLY VOLTAGE ( V)
6.0
WS57C71C
TYPICAL ACCESS TIME CHANGE
vs.
OUTPUT LOADING
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
0.0
200 400 600 800
CAPACITANCE ( pF)
1000
NORMALIZED Taa
vs.
AMBIENT TEMPERATURE
1.6
1.4
1.2
1.0
0.8
0.6
-55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
NORMALIZED SUPPLY CURRENT
vs.
AMBIENT TEMPERATURE
1.2
1.1
1.0
0.9
0.8
-55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
2-59

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