M27W401-80K6 Datasheet M27W401-80F6, M27W401-80K6, M27W401-80B6 | P4-P6

List of tables M27W401

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List of tables

Table 1. Signal descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 2. Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 3. Electronic Signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 4. Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 5. Read Mode DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6. Programming Mode DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 7. AC Measurement Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 8. Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Table 9. Read Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 10. Programming Mode AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 11. FDIP32WA package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Table 12. PDIP32 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Table 13. PLCC32 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table 14. TSOP32 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Table 15. Ordering Information Scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table 16. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Obsolete Product(s) - Obsolete Product(s)

M27W401 Summary description

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1 Summary description

The M27W401 is a low voltage 4 Mbit EPROM offered in the two ranges UV (ultra violet

erase) and OTP (one time programmable). It is ideally suited for microprocessor systems

requiring large data or program storage and is organised as 524,288 by 8 bits.

The M27W401 operates in the read mode with a supply voltage as low as 2.7V at –40 to

85°C temperature range. The decrease in operating power allows either a reduction of the

size of the battery or an increase in the time between battery recharges.

The FDIP32W (window ceramic frit-seal package) 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 application where the content is programmed only one time and erasure is not required,

the M27W401 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20 mm) packages.

In order to meet environmental requirements, ST offers the M27W401 in ECOPACK®

packages. ECOPACK packages are Lead-free. The category of second Level Interconnect

is marked on the package and on the inner box label, in compliance with JEDEC Standard

JESD97. The maximum ratings related to soldering conditions are also marked on the inner

box label.

ECOPACK is an ST trademark. ECOPACK® specifications are available at: www.st.com.

See Figure 1: Logic Diagram and Table 1: Signal descriptions for a brief overview of the

signals connected to this device.

Figure 1. Logic Diagram

AI01590

A0-A18 Q0-Q7

M27W401

Obsolete Product(s) - Obsolete Product(s)

Summary description M27W401

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Figure 2. DIP Connections

Table 1. Signal descriptions

Signal Description

A0-A18 Address Inputs

Q0-Q7 Data Outputs

Chip Enable

Output Enable

Program Supply

Supply Voltage

Ground

A13

A10

A14

A11

Q5Q1

Q3V

A17

A18A16

A12

A15

AI02676

M27W401

Obsolete Product(s) - Obsolete Product(s)

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P23

M27W401-80K6

Mfr. #:

Buy M27W401-80K6

Manufacturer:

STMicroelectronics

Description:

EPROM 4M (512Kx8) 80ns

Lifecycle:

New from this manufacturer.

Delivery:

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M27W401-80K6

M27W401-80K6

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