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FM24W256-G Fiches technique(PDF) 2 Page - Cypress Semiconductor

No de pièce FM24W256-G
Description  256Kb Wide Voltage Serial F-RAM
Download  14 Pages
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Fabricant  CYPRESS [Cypress Semiconductor]
Site Internet  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

FM24W256-G Fiches technique(HTML) 2 Page - Cypress Semiconductor

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FM24W256 - 256Kb Wide Voltage I2C F-RAM
Document Number: 001-84464 Rev. *A
Page 2 of 14
Address
Latch
4,096 x 64
FRAM Array
Data Latch
8
SDA
Counter
Serial to Parallel
Converter
Control Logic
SCL
WP
A0-A2
Figure 1. Block Diagram
Pin Description
Pin Name
Type
Pin Description
A0-A2
Input
Device Select Address 0-2: These pins are used to select one of up to 8 devices of
the same type on the same two-wire bus. To select the device, the address value on
the three pins must match the corresponding bits contained in the slave address. The
address pins are pulled down internally.
SDA
I/O
Serial Data/Address: This is a bi-directional pin for the two-wire interface. It is
open-drain and is intended to be wire-OR’d with other devices on the two-wire bus.
The input buffer incorporates a Schmitt trigger for noise immunity and the output
driver includes slope control for falling edges. A pull-up resistor is required.
SCL
Input
Serial Clock: The serial clock pin for the two-wire interface. Data is clocked out of
the part on the falling edge, and into the device on the rising edge. The SCL input
also incorporates a Schmitt trigger input for noise immunity.
WP
Input
Write Protect: When tied to VDD, addresses in the entire memory map will be write-
protected. When WP is connected to ground, all addresses may be written. This pin
is pulled down internally.
VDD
Supply
Supply Voltage: 2.7V to 5.5V
VSS
Supply
Ground


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