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M87AD, M87C257, M87C257-12F1

Table of contents:
Info of M87AD
Info of M87C257
Info of M87C257-12F1

M87AD, M87C257, M87C257-12F1 Selling Leads, Datasheet

MFG:STMicroelectronics Category:Integrated Circuits (ICs) Package Cooled:DIP D/C:98+

M87AD, M87C257, M87C257-12F1 Datasheet download

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Part Number: M87AD

Category: Integrated Circuits (ICs)

MFG: STMicroelectronics

Package Cooled: DIP

D/C: 98+

Description: IC EPROM 256KBIT 120NS 28W-CDIP

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M87C257 General Description

The M87C257 is a high speed 262,144 bit UV erasable and electrically programmable EPROM. The M87C257 incorporates latches for all address inputs to minimize chip count, reduce cost, and
The Window Ceramic Frit-Seal Dual-in-Line pack- age has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit
pattern. A new pattern can then be written to the device by following the programming procedure.
For applications where the content is programmed only one time and erasure is not required, the M87C257 is offered in Plastic Leaded Chip Carrier,
package.

M87C257 Maximum Ratings

Symbol	Parameter	Value	Unit
T_A	Ambient Operating Temperature	-40 to 125
TB_IAS	Temperature Under Bias	50 to 125
T_STG	Storage Temperature	65 to 150
V_IO	Input or Output Voltages (except A9)	2 to 7	V
V_CC	Supply Voltage	2 to 7	V
V_A9	A9 Voltage	2 to 13.5	V
V_PP	Program Supply Voltage	2 to 14	V

Notes: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the SGS-THOMSON SURE Program and other relevant quality documents.
2. Minimum DC voltage on Input or Output is 0.5V with possible undershoot to 2.0V for a period less than 20ns. Maximum DC voltage on Output is VCC +0.5V with possible overshoot to VCC +2V for a period less than 20ns.

M87C257 Features

INTEGRATED ADDRESS LATCH
FAST ACCESS TIME: 45ns
LOW POWER "CMOS" CONSUMPTION:
Active Current 30mA
Standby Current 100A
PROGRAMMING VOLTAGE: 12.75V
ELECTRONIC SIGNATURE for AUTOMATED PROGRAMMING
PROGRAMMING TIMES of AROUND 3sec. (PRESTO II ALGORITHM)

M87C257 Connection Diagram

M87C257-12F1 Parameters

Technical/Catalog Information	M87C257-12F1
Vendor	STMicroelectronics
Category	Integrated Circuits (ICs)
Memory Type	UV EPROM
Memory Size	256K (32K x 8)
Speed	120ns
Interface	Parallel
Package / Case	28-CDIP (600 mil) Window Frit Seal
Packaging	Tube
Voltage - Supply	4.5 V ~ 5.5 V
Operating Temperature	0°C ~ 70°C
Format - Memory	EPROMs
Drawing Number	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	M87C257 12F1 M87C25712F1

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