FM24C64C-G RAMTRON [Ramtron International Corporation], FM24C64C-G Datasheet

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FM24C64C-G

Manufacturer Part Number
FM24C64C-G
Description
64Kb Serial 5V F-RAM Memory
Manufacturer
RAMTRON [Ramtron International Corporation]
Datasheet
Preliminary
FM24C64C
64Kb Serial 5V F-RAM Memory
Features
64K bit Ferroelectric Nonvolatile RAM
Fast Two-wire Serial Interface
Description
The FM24C64C is a 64-kilobit nonvolatile memory
employing an advanced ferroelectric process. A
ferroelectric random access memory or FRAM is
nonvolatile and performs reads and writes like a
RAM. It provides reliable data retention for 36 years
while eliminating the complexities, overhead, and
system
EEPROM and other nonvolatile memories.
The FM24C64C performs write operations at bus
speed. No write delays are incurred. Data is written to
the memory array in the cycle after it has been
successfully transferred to the device. The next bus
cycle may commence immediately without the need
for data polling.
supporting 10
more write cycles than EEPROM.
These capabilities make the FM24C64C 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
writes with less overhead for the system.
The FM24C64C provides substantial benefits to users
of serial EEPROM, yet these benefits are available in
a hardware drop-in replacement. The FM24C64C is
available in an industry standard 8-pin SOIC package
and uses a familiar two-wire protocol. The
specifications are guaranteed over an industrial
temperature range of -40°C to +85°C.
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.1
June 2011
Organized as 8,192 x 8 bits
High Endurance 1 Trillion (10
36 Year Data Retention at +75C
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
12
read/write cycles, or a million times
reliability
The FM24C64C is capable of
problems
12
) Read/Writes
caused
by
Low Power Operation
Industry Standard Configuration
Pin Configuration
Pin Names
A0-A2
SDA
SCL
WP
VSS
VDD
Ordering Information
FM24C64C-G
FM24C64C-GTR
VSS
5V operation
100 A Active Current (100 kHz)
4 A (typ.) Standby Current
Industrial Temperature -40 C to +85 C
8-pin “Green”/RoHS SOIC (-G)
A0
A1
A2
1850 Ramtron Drive, Colorado Springs, CO 80921
1
2
3
4
Function
Device Select Address
Serial Data/address
Serial Clock
Write Protect
Ground
Supply Voltage
Ramtron International Corporation
“Green”/RoHS 8-pin SOIC
“Green”/RoHS 8-pin SOIC,
Tape & Reel
(800) 545-FRAM, (719) 481-7000
8
7
6
5
VDD
WP
SCL
SDA
www.ramtron.com
Page 1 of 12

Related parts for FM24C64C-G

FM24C64C-G Summary of contents

Page 1

... SOIC (-G) Pin Configuration caused by VSS Pin Names A0-A2 SDA SCL WP VSS VDD Ordering Information FM24C64C-G FM24C64C-GTR 1850 Ramtron Drive, Colorado Springs, CO 80921 VDD SCL 3 6 SDA 4 5 Function Device Select Address Serial Data/address Serial Clock ...

Page 2

... Write access is permitted to the lower three- quarters of the address space. When WP is low, all addresses may be written. This pin is pulled down internally. VDD Supply Supply Voltage: 5V VSS Supply Ground Rev. 1.1 June 2011 Address Latch Figure 1. FM24C64C Block Diagram FM24C64C 1,024 x 64 FRAM Array 8 Data Latch ...

Page 3

... This is explained in more detail in the interface section below. Users can expect several obvious system benefits from the FM24C64C due to its fast write cycle and high endurance as compared with EEPROM. However there are less obvious benefits as well. For example in a high noise environment, the fast-write operation is less susceptible to corruption than an EEPROM since it is completed quickly ...

Page 4

... If the receiver acknowledges the last byte, this will cause the FM24C64C to attempt to drive the bus on the next clock while the master is sending a new command such as a Stop command. ...

Page 5

... After the address information has been transmitted, data transfer between the bus master and the FM24C64C can begin. For a read operation, the FM24C64C will place 8 data bits on the bus then wait for an Acknowledge from the master. If the Acknowledge occurs, the FM24C64C will transfer the next sequential byte ...

Page 6

... Current Address & Sequential Read The FM24C64C uses an internal latch to supply the address for a read operation. A current address read uses the existing value in the address latch as a starting place for the read operation. The system reads from the address immediately following that of the last operation ...

Page 7

... Therefore, endurance cycles are applied for each read or write cycle. The memory architecture is based on an array of rows and columns. Each read or write access causes an endurance cycle for an entire row. In the FM24C64C, a row is 64 bits wide. Every 8-byte boundary marks Rev. 1.1 June 2011 set ...

Page 8

... DD Min Typ 4.5 5.0 4 -0 other inputs -0. Stop command issued FM24C64C Ratings -1.0V to +7.0V -1.0V to +7.0V and V < V +1. -55 125C 260 C 2.5kV 1.25kV 100V MSL-1 Max Units Notes 5 A 100 A 200 A 400  ...

Page 9

... DD Max Units min 4.5V to 5.5V unless otherwise specified) DD min) DD waveform. DD FM24C64C Max Min Max Units Notes 400 0 1000 kHz s 0.6 s 0.4 s 0.9 0.55 s 0.5 s 0.25 s 0. 100 ns 300 300 ns 1 300 100 ...

Page 10

... 0 HIGH 1/fSCL t AA Stop Start t HD:DAT t t SU:DAT HD:STA Stop Start Min FM24C64C Equivalent AC Load Circuit 5.5V 1700  Output 100 LOW t HD:DAT t SU:DAT t DH Acknowledge t AA Acknowledge Max Units Notes - Years ...

Page 11

... SOIC Package Marking Scheme Legend: XXXXXX= part number, P= package type R=rev code, LLLLLLL= lot code XXXXXXX-P RIC=Ramtron Int’l Corp, YY=year, WW=work week LLLLLLL RICYYWW Example: FM24C64C, “Green” SOIC package, Year 2010, Work Week 47 FM24C64C-G A00002G1 RIC1047 Rev. 1.1 June 2011 Recommended PCB Footprint 3.90 0.10 6.00 0.20 ± ...

Page 12

... Revision History Revision Date 1.0 3/22/2011 1.1 6/30/2011 Rev. 1.1 June 2011 Summary Initial Release Added ESD ratings. FM24C64C ...

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