WS57C128FB Datasheet, PDF (1/5 Pages) STMicroelectronics – HIGH SPEED 16K x 8 CMOS EPROM

WS57C128FB
HIGH SPEED 16K x 8 CMOS EPROM
• Very Fast Access Time
— 35 ns
• Low Power Consumption
• EPI Processing
— Latch-up Immunity Up to 200 mA
KEY FEATURES
• Standard EPROM Pinout
• DIP and Surface Mount Packaging
Available
GENERAL DESCRIPTION
The WS57C128FB is a High Performance 128K UV Erasable Electrically Programmable Read Only Memory. It is
manufactured with an advanced CMOS technology which enables it to operate at Bipolar speeds while consuming
only 90 mA.
Two major features of the WS57C128FB are its Low Power and High Speed. These features make it an ideal
solution for applications which require fast access times, low power, and non-volatility. Typical applications include
systems which do not utilize mass storage devices and/or are board space limited.
The WS57C128FB is configured in the standard EPROM pinout which provides an easy upgrade path for systems
which are currently using standard EPROMs. The EPROMs are available in both 600 Mil DIP packages, and both
J-leaded and leadless surface mount packages.
MODE SELECTION
PINS
PGM CE
MODE
Read
X VIL
Output
Disable
X
X
OE VPP VCC OUTPUTS
VIL VCC VCC DOUT
VIH VCC VCC High Z
Standby
Program
Program
Verify
X VIH X VCC VCC High Z
VIL VIL VIH VPP VCC DIN
VIH VIL VIL VPP VCC DOUT
Program
Inhibit
X VIH X VPP VCC High Z
X can be VIL or VIH.
PIN CONFIGURATION
TOP VIEW
Chip Carrier
CERDIP
A₆
4
5
3
2
1
32 31
30
29
A₈
A_{5 6}
28 A₉
A_{4 7}
27 A₁₁
A_{3 8}
26 NC
A_{2 9}
25 OE
A_{1 10}
24 A₁₀
A_{0 11}
23 CE
NC ₁₂
22 O₇
O_{0 13}
21 O₆
14 15 16 17 18 19 20
O₁ O₂ NC O₃ O₄ O₅
V_PP 1
A₁₂ 2
A₇ 3
A₆ 4
A₅ 5
A₄ 6
A₃ 7
A₂ 8
A₁ 9
A₀ 10
O₀ 11
O₁ 12
O₂ 13
GND 14
28 V_CC
27 PGM
26 A13
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 O₇
18 O₆
17 O₅
16 O₄
15 O₃
PRODUCT SELECTION GUIDE
PARAMETER
WS57C128FB-35 WS57C128FB-45 WS57C128FB-55 WS57C128FB-70
Address Access Time (Max)
35 ns
45 ns
55 ns
70 ns
Chip Select Time (Max)
35 ns
45 ns
55 ns
70 ns
Output Enable Time (Max)
20 ns
25 ns
25 ns
25 ns
Return to Main Menu
3-7