M28F420-90XM1TR datasheet, PDF

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M28F420-90XM1TR: Description512KX8 FLASH 12V PROM, 90ns, PDSO44, SO-44; Categorystorage storage; File Size18KB，2 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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M28F420-90XM1TR Overview

512KX8 FLASH 12V PROM, 90ns, PDSO44, SO-44

M28F420-90XM1TR Parametric

Parameter Name	Attribute value
Maker	STMicroelectronics
Parts packaging code	SOIC
package instruction	SO-44
Contacts	44
Reach Compliance Code	unknown
ECCN code	EAR99
Maximum access time	90 ns
Other features	BOTTOM BOOT BLOCK
Spare memory width	16
startup block	BOTTOM
JESD-30 code	R-PDSO-G44
length	28.2 mm
memory density	4194304 bit
Memory IC Type	FLASH
memory width	8
Number of functions	1
Number of terminals	44
word count	524288 words
character code	512000
Operating mode	ASYNCHRONOUS
Maximum operating temperature	70 °C
Minimum operating temperature
organize	512KX8
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Parallel/Serial	PARALLEL
Programming voltage	12 V
Certification status	Not Qualified
Maximum seat height	2.62 mm
Maximum supply voltage (Vsup)	5.25 V
Minimum supply voltage (Vsup)	4.75 V
Nominal supply voltage (Vsup)	5 V
surface mount	YES
technology	CMOS
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
type	NOR TYPE
width	13.3 mm

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M28F420

4 Mbit (512Kb x8 or 256Kb x16, Boot Block) Flash Memory

10% SUPPLY VOLTAGE

12V

5% or

10% PROGRAMMING

VOLTAGE

FAST ACCESS TIME: 60ns

PROGRAM/ERASE CONTROLLER (P/E.C.)

AUTOMATIC STATIC MODE

MEMORY ERASE in BLOCKS

– Boot Block (Bottom location) with hardware

write and erase protection

– Parameter and Main Blocks

100,000 PROGRAM/ERASE CYCLES

LOW POWER CONSUMPTION

20 YEARS DATA RETENTION

– Defectivity below 1ppm/year

ELECTRONIC SIGNATURE

– Manufacturer Code: 0020h

– Device Code: 00FAh

DESCRIPTION

The M28F420 Flash memory is a non-volatile

memorythat may be erased electricallyat the block

level and programmed by byte or by word.

SO44 (M)

Figure 1. Logic Diagram

VCC

VPP

Signal Names

A0-A16

DQ0-DQ7

DQ8-DQ14

DQ15A–1

BYTE

B28F420/808

Complete data available on

DATA-on-DISC CD-ROM

or at

www.st.com

A0-A17

Address Inputs

Data Input / Outputs

Data Input/Output or Address Input

Chip Enable

Output Enable

Write Enable

Byte/Word Organization

Write Protect

Reset/Power Down/Boot Block

Unlock

Program & Erase Supply Voltage

Supply Voltage

Ground

DQ15A–1

M28F420

DQ0-DQ14

BYTE

VSS

AI01130E

1/2

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Shortcut: 00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W

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