FM25640B datasheet(8/13 Pages) RAMTRON

Teilenummer	FM25640B

Bauteilbeschribung	64Kb Serial 5V F-RAM Memory

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Hersteller	RAMTRON [Ramtron International Corporation]

Direct Link	http://www.ramtron.com

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8 / 13 page

FM25640B - 64Kb 5V SPI F-RAM

Rev. 1.2

Mar. 2011

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Figure 9. Memory Write

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Figure 10. Memory Read

Endurance

Internally, a F-RAM operates with a read and restore

mechanism. Therefore, endurance cycles are applied

for each access: read or write. The F-RAM

architecture is based on an array of rows and

columns. Each access causes a cycle for an entire

row. In the FM25640B, a row is 64 bits wide. Every

8-byte boundary marks the beginning of a new row.

Endurance can be optimized by ensuring frequently

accessed data is located in different rows.

Regardless, F-RAM read and write endurance is

effectively unlimited at the 20MHz clock speed.

Even at 2000 accesses per second to the same row, 15

years time will elapse before 1012 endurance cycles

occur.

Ähnliche Beschreibung - FM25640B

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Cypress Semiconductor	FM24C64B	352Kb / 15P	64Kb Serial 5V F-RAM Memory
Ramtron International C...	FM25640C	321Kb / 13P	64Kb Serial 5V F-RAM Memory
	FM24C64B	293Kb / 12P	64Kb Serial 5V F-RAM Memory
	FM24C64C	274Kb / 12P	64Kb Serial 5V F-RAM Memory
Cypress Semiconductor	FM24C64B	347Kb / 12P	64Kb Serial 5V F-RAM Memory
	FM25640B-G	441Kb / 13P	64Kb Serial 5V F-RAM Memory
	FM25640B	441Kb / 13P	64Kb Serial 5V F-RAM Memory
	FM25640B	400Kb / 14P	64Kb Serial 5V F-RAM Memory
	FM1608B	342Kb / 14P	64Kb Bytewide 5V F-RAM Memory
Ramtron International C...	FM1608B	94Kb / 11P	64Kb Bytewide 5V F-RAM Memory

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FM25640B Datenblatt(PDF) 8 Page - Ramtron International Corporation

FM25640B Datenblatt(HTML) 8 Page - Ramtron International Corporation

Ähnliche Teilenummer - FM25640B

Ähnliche Beschreibung - FM25640B

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