FM24CL64B-GA RAMTRON [Ramtron International Corporation], FM24CL64B-GA Datasheet - Page 2

• Manufacturer Part Number: FM24CL64B-GA
• Description: 64Kb Serial 3V F-RAM Memory
• Manufacturer: RAMTRON [Ramtron International Corporation]

Pin Description
Rev. 1.1
June 2011
Pin Name
A0-A2
SDA
SCL
WP
VDD
VSS
A0-A2
SDA
WP
SCL
Supply
Supply
Type
Input
Input
Input
I/O
Pin Description
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 two pins must match the corresponding bits contained in the slave address. The
address pins are pulled down internally.
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. An external pull-up resistor is
required.
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.
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.
Supply Voltage
Ground
Serial to Parallel
Counter
Control Logic
Figure 1. FM24CL64B Block Diagram
Converter
Address
FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.)
Latch
FRAM Array
Data Latch
1K x 64
8
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