FM24CL64-G Ramtron, FM24CL64-G Datasheet

F-RAM 64K (8Kx8) 2.7V

FM24CL64-G

Manufacturer Part Number
FM24CL64-G
Description
F-RAM 64K (8Kx8) 2.7V
Manufacturer
Ramtron
Datasheet

Specifications of FM24CL64-G

Memory Size
64 KB
Organization
8 K x 8
Interface
2-Wire
Operating Supply Voltage
2.7 V to 3.6 V
Operating Temperature Range
- 40 C to + 85 C
Package / Case
SOIC-8
Mounting Style
SMD/SMT
Lead Free Status / Rohs Status
 Details

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FM24CL64
64Kb Serial 3V F-RAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
Fast Two-wire Serial Interface
Description
The FM24CL64 is a 64-kilobit 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 45 years
while eliminating the complexities, overhead, and
system
EEPROM and other nonvolatile memories.
The FM24CL64 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 FM24CL64 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 FM24CL64 provides substantial benefits to users
of serial EEPROM, yet these benefits are available in
a hardware drop-in replacement. The FM24CL64 is
available in industry standard 8-pin SOIC and DFN
packages using a familiar two-wire protocol. It is
guaranteed over an industrial temperature range of
-40°C to +85°C.
This product conforms to specifications per the terms of the Ramtron
standard warranty. The product has completed Ramtron’s internal
qualification testing and has reached production status.
Rev. 3.4
Feb. 2011
Organized as 8,192 x 8 bits
Unlimited Read/Write Cycles
45 year Data Retention
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
magnitude
problems
higher
caused
than
by
Industry Standard Configuration
Pin Configuration
Low Power Operation
† Grade 3 AEC-Q100 Qualified
* End of life. Last time buy June 2009.
Pin Names
A0-A2
SDA
SCL
WP
VSS
VDD
Ordering Information
FM24CL64-G
FM24CL64-GTR
FM24CL64-DG
FM24CL64-DGTR
FM24CL64-S *
FM24CL64-STR *
True 2.7V-3.6V Operation
75 µA Active Current (100 kHz)
1 µA Standby Current
Industrial Temperature -40° C to +85° C
8-pin “Green”/RoHS SOIC and TDFN Packages
Grade 3 AEC-Q100 Qualified (SOIC only)
VSS
A0
A1
A2
1850 Ramtron Drive, Colorado Springs, CO 80921
VSS
A0
A1
A2
Function
Device Select Address
Serial Data/address
Serial Clock
Write Protect
Ground
Supply Voltage
1
2
3
4
Top View
1
2
3
4
Ramtron International Corporation
“Green”/RoHS 8-pin SOIC
“Green”/RoHS 8-pin SOIC,
Tape & Reel
“Green”/RoHS 8-pin DFN
“Green”/RoHS 8-pin DFN,
Tape & Reel
8-pin SOIC
8-pin SOIC, Tape & Reel
(800) 545-FRAM, (719) 481-7000
8
7
6
5
8
7
6
5
www.ramtron.com
VDD
WP
SCL
SDA
VDD
WP
SCL
SDA
Page 1 of 13

Related parts for FM24CL64-G

FM24CL64-G Summary of contents

Page 1

... A1 A2 VSS caused by higher than VSS Pin Names A0-A2 SDA SCL WP VSS VDD Ordering Information FM24CL64-G FM24CL64-GTR FM24CL64-DG FM24CL64-DGTR FM24CL64-S * FM24CL64-STR * † Grade 3 AEC-Q100 Qualified * End of life. Last time buy June 2009. 1850 Ramtron Drive, Colorado Springs, CO 80921 VDD SCL 3 6 SDA ...

Page 2

... When WP is low, all addresses may be written. This pin is pulled down internally. VDD Supply Supply Voltage: 2.7V to 3.6V VSS Supply Ground Rev. 3.4 Feb. 2011 Address Latch Converter Figure 1. FM24CL64 Block Diagram FM24CL64 2,048 x 32 FRAM Array 8 Data Latch Page ...

Page 3

... This is explained in more detail in the interface section below. Users expect several obvious system benefits from the FM24CL64 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 FM24CL64 expects after a start condition is the slave address. As shown in Figure 4, the slave address contains the device type, the device select address bits, 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 FM24CL64 can begin. For a read operation the FM24CL64 will place 8 data bits on the bus then wait for an acknowledge from the master. If the acknowledge occurs, the FM24CL64 will transfer the next sequential byte ...

Page 6

... Acknowledge Figure 6. Multiple Byte Write There are four ways to properly terminate a read operation. Failing to properly terminate the read will most likely create a bus contention as the FM24CL64 attempts to read out additional data onto the bus. The four valid methods are: 1. The bus master issues a no-acknowledge in the ...

Page 7

... By Master S By FM24CL64 Start Address By Master S Slave Address By FM24CL64 Start By Master S Slave Address 0 A Address MSB By FM24CL64 Rev. 3.4 Feb. 2011 set The operation is now a current address read. Address Slave Address 1 A Data Byte Acknowledge Data Figure 7. Current Address Read Acknowledge 1 A ...

Page 8

... Std JESD22-A115-A) =2.7V to 3.65V unless otherwise specified) DD Min 2.7 -0 other inputs -0.3V Stop command issued FM24CL64 Ratings -1.0V to +5.0V -1.0V to +5.0V and V < V +1. -55°C to +125°C 300° C 4kV 300V MSL-1 Typ Max Units Notes 3. µA 150 µ ...

Page 9

... DD Max Units Notes FM24CL64 Max Min Max Units Notes 400 0 1000 kHz 1 0.6 µs 0.4 µs 0.9 0.55 µs 0.5 µs 0.25 µs 0.25 µ 100 ns 300 300 ns 2 300 100 ...

Page 10

... Write Bus Timing SCL t SU:STO SDA Start Data Retention (V = 2.7V to 3.65V, 85°C) DD Parameter Data Retention Rev. 3.4 Feb. 2011 t HIGH 1/fSCL t AA Stop Start t HD:DAT t t SU:DAT HD:STA Stop Start Min Units 45 Years FM24CL64 LOW t HD:DAT t SU:DAT t DH Acknowledge t AA Acknowledge Notes Page ...

Page 11

... SOIC Package Marking Scheme Legend: XXXX= part number, P= package type LLLLLLL= lot code XXXXXXX-P RIC=Ramtron Int’l Corp, YY=year, WW=work week LLLLLLL RICYYWW Example: FM24CL64, “Green” SOIC package, Year 2004, Work Week 39 FM24CL64-G A40003G1 RIC0439 Rev. 3.4 Feb. 2011 FM24CL64 Page ...

Page 12

... Legend: R=Ramtron, G=”green” TDFN package, XXXX=base part number LLLL= lot code, RGXXXX YY=year, WW=work week LLLL YYWW Example: “Green” TDFN package, FM24CL64, Lot 0003, Industrial temperature, Year 2005, Work Week 14 RG4L64 0003 0514 Rev. 3.4 Feb. 2011 Exposed metal pad. ...

Page 13

... Changed TDFN Package Marking Scheme. Marked –S ordering number as “not recommended for new designs”. Added tape and reel ordering information. Added last time buy notice on –S ordering number. Added notation that –G parts are Grade 3. Not recommended for new designs. Alternative: FM24CL64B. FM24CL64 Page ...

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