WS57C43C-1 Datasheet, PDF (1/2 Pages) STMicroelectronics – MILITARY HIGH SPED 4K x 8 CMOS PROM/RPROM

WS57C43C
MILITARY HIGH SPED 4K x 8 CMOS PROM/RPROM
KEY FEATURES
• Ultra-Fast Access Time
— t_ACC = 35 ns
— t_CS = 20 ns
• Low Power Consumption
• Fast Programming
• DESC SMD No. 5962-906580
• Pin Compatible with 4K x 8 Bipolar PROMs
• Immune to Latch-UP
— Up to 200 mA
• ESD Protection Exceeds 2000 V
• Available in 300 Mil DIP and CLLCC
GENERAL DESCRIPTION
The WS57C43C is a High Performance 32K UV Erasable Electrically Re-Programmable Read Only Memory
(RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar PROM
speeds while consuming only 25% of the power required by its Bipolar counterparts. A further advantage of the
WS57C43C over Bipolar PROM devices is the fact that it utilizes a proven EPROM technology. This enables the
entire memory array to be tested for switching characteristics and functionality after assembly. Unlike devices which
cannot be erased, every WS5743C in a windowed package is 100% tested with worst case test patterns both
before and after assembly.
The WS57C43C is configured in the standard Bipolar PROM pinout which provides an easy upgrade path for
systems which are currently using Bipolar PROMs, or its predecessor, the WS57C43B.
MODE SELECTION
PINS CS1
MODE
V_PP
Read
V_{I L}
Output
Disable
V_{I H}
Output
X
Disable
Program
V_PP
Program
Verify
V_{I L}
CS2
V_{I H}
X
V_{I L}
X
V_{I H}
V_CC OUTPUTS
V_CC
V_CC
V_CC
V_CC
V_CC
D_OUT
High Z
High Z
D_IN
D_OUT
PIN CONFIGURATION
TOP VIEW
Chip Carrier
CERDIP
NC
A₅ A₆ A₇ V_CC A₈ A₉
A₇ 1
A₄
4
5
3
2
1
28 27 26
25
A₁₀
A₆ 2
A₅ 3
A₃
A₂
A₁
A₀
NC
O₀
6
24
7
23
8
22
9
21
10
20
11
19
12 13 14 15 16 17 18
CS1/V_PP
A₁₁
CS2
A₄
A₃
A₂
4
5
6
NC
A₁ 7
O₇
O₆
A₀ 8
O₀ 9
O₁ 10
O₂ 11
O₁ O₂ NC O₃ O₄ O₅
GND
GND 12
24 V_CC
23 A₈
22 A₉
21 A10
20 CS1/V_PP
19 A₁₁
18 CS2
17 O₇
16 O₆
15 O₅
14 O₄
13 O₃
PRODUCT SELECTION GUIDE
PARAMETER
Address Access Time (Max)
CS to Output Valid Time (Max)
WS57C43C-35
35 ns
20 ns
WS57C43C-45
45 ns
25 ns
WS57C43C-55
55 ns
25 ns
WS57C43C-70
70 ns
25 ns
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