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

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FM24CL64B-GA

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

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Part Number
Manufacturer
Quantity
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Part Number:
FM24CL64B-GATR
Manufacturer:
CYPRESS
Quantity:
2 500
Preliminary
FM24CL64B
64Kb Serial 3V F-RAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
Fast Two-wire Serial Interface
Description
The FM24CL64B is a 64Kbit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or F-RAM is
nonvolatile and performs reads and writes like a
RAM. It provides reliable data retention for years
while eliminating the complexities, overhead, and
system
EEPROM and other nonvolatile memories.
The FM24CL64B performs write operations at bus
speed. No write delays are incurred. The next bus
cycle may commence immediately without the need
for data polling. In addition, the product offers write
endurance
EEPROM. Also, F-RAM exhibits much lower power
during writes than EEPROM since write operations
do not require an internally elevated power supply
voltage for write circuits.
These capabilities make the FM24CL64B ideal for
nonvolatile memory applications requiring frequent
or rapid writes. Examples range from data collection
where the number of write cycles may be critical, to
demanding industrial controls where the long write
time of EEPROM can cause data loss. The
combination of features allows more frequent data
writing with less overhead for the system.
The FM24CL64B provides substantial benefits to
users of serial EEPROM, yet these benefits are
available in a hardware drop-in replacement. The
device is available in industry standard 8-pin SOIC
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.1
June 2011
Organized as 8192 x 8 bits
High Endurance 10 Trillion (10
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Up to 1 MHz maximum bus frequency
Direct hardware replacement for EEPROM
Supports legacy timing for 100 kHz & 400 kHz
level
orders
reliability
of
- Automotive Temp.
magnitude
problems
AEC Q100 Grade 1 Compliant
13
) Read/Writes
higher
caused
than
by
Low Power Consumption
Industry Standard Configuration
package using a familiar two-wire (I
device is guaranteed over the automotive temperature
range of -40°C to +125°C.
Pin Configuration
Pin Name
A0-A2
SDA
SCL
WP
VDD
VSS
Ordering Information
FM24CL64B-G
FM24CL64B-GATR
Low Voltage Operation 3.0-3.6V
6 A Standby Current (+85C)
Automotive Temperature -40C to +125C
o
8-pin “Green”/RoHS SOIC Package
VSS
Qualified to AEC Q100 Specification
A0
A1
A2
1850 Ramtron Drive, Colorado Springs, CO 80921
Function
Device Select Address
Serial Data/address
Serial Clock
Write Protect
Supply Voltage
Ground
A
1
2
3
4
Ramtron International Corporation
“Green”/RoHS 8-pin SOIC,
Automotive Grade 1
“Green”/RoHS 8-pin SOIC,
Automotive Grade 1,
Tape & Reel
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
8
7
6
5
2
C) protocol. The
SDA
VDD
WP
SCL
Page 1 of 12

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FM24CL64B-GA Summary of contents

Page 1

... Pin Configuration A0 caused VSS higher than Pin Name A0-A2 SDA SCL WP VDD VSS Ordering Information FM24CL64B-G FM24CL64B-GATR 2 C) protocol. The VDD SCL 3 6 SDA 4 5 Function Device Select Address Serial Data/address Serial Clock Write Protect ...

Page 2

... When WP is connected to ground, all addresses may be written. This pin is pulled down internally. VDD Supply Supply Voltage VSS Supply Ground Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.) Address Latch Converter Control Logic Figure 1. FM24CL64B Block Diagram FRAM Array 8 Data Latch ...

Page 3

... This is explained in more detail in the interface section below. Users expect several obvious system benefits from the FM24CL64B due to its fast write cycle and high endurance as compared with EEPROM. However there are less obvious benefits as well. For example ...

Page 4

... Slave Address The first byte that the FM24CL64B expects after a start condition is the slave address. As shown in Figure 4, the slave address contains the device type or slave ID, the device select address bits, a page address bit, and a bit that specifies if the transaction is a read or a write ...

Page 5

... After the address information has been transmitted, data transfer between the bus master and the FM24CL64B can begin. For a read operation the FM24CL64B will place 8 data bits on the bus then wait for an acknowledge from the master. If the acknowledge occurs, the FM24CL64B will transfer the next sequential byte ...

Page 6

... Thus, a sequential read is simply a current address read with multiple byte transfers. After each byte the internal address counter will be incremented. Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.) Address & Data 0 A Address MSB A Address LSB Acknowledge Figure 5 ...

Page 7

... Address MSB By F-RAM Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.) master issues a start condition. This simultaneously aborts the write operation and allows the read command to be issued with the slave address LSB set to a „1‟. The operation is now a current address read. ...

Page 8

... This parameter is characterized but not tested. 5. The input pull-down circuit is stronger (40K) when the input voltage is below V is above Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp (AEC-Q100-002 Rev. E) (AEC-Q100-011 Rev. B) (AEC-Q100-003 Rev. E) =3.0V to 3.6V unless otherwise specified) DD Min 3 ...

Page 9

... First Access (Start condition Last Access (Stop condition) to Power Down ( Rise Time Fall Time VF DD Notes 1. Slope measured at any point Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.) =3.0V to 3.6V unless otherwise specified) DD Min Max Min 0 100 0 4.7 1.3 4.0 0.6 3 4.7 1.3 4.0 0.6 4.7 0 ...

Page 10

... Typical Grade 1 Operating Profile 1600 1400 1200 1000 800 600 400 200 100 105 110 115 120 125 Temperature (°C) Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp HIGH 1/fSCL t AA Stop Start ...

Page 11

... Legend: XXXXX= part number, P=package type R=rev code, LLLLLLL= lot code XXXXXX-P RIC=Ramtron Int‟l Corp, YY=year, WW=work week RLLLLLLL RICYYWW Example: FM24CL64B-GA, “Green” SOIC, Automotive Temperature, Rev A, Lot L3502G1, Year 2011, Work Week 04 24CL64BGA AL3502G1 RIC1104 Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp ...

Page 12

... Revision History Revision Date 1.0 2/22/2011 1.1 6/2/2011 Rev. 1.1 June 2011 FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.) Summary Initial Release Added ESD ratings. Fixed notes 4 and table. Page ...

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