FM24C04A-GTR Ramtron, FM24C04A-GTR Datasheet

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FM24C04A-GTR

Manufacturer Part Number
FM24C04A-GTR
Description
case, soic, min, max, ram, package, Memory, voltage, supply, memory, Semiconductors and Actives, serial, bit
Manufacturer
Ramtron
Datasheet

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FM24C04A-GTR
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RAMTRON
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384 000
FM24C04A
4Kb FRAM Serial Memory
Features
4K bit Ferroelectric Nonvolatile RAM
Fast Two-wire Serial Interface
Description
The FM24C04A is a 4-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 45 years
while eliminating the complexities, overhead, and
system level reliability problems caused by EEPROM
and other nonvolatile memories.
Unlike serial EEPROMs, the FM24C04A 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.
These capabilities make the FM24C04A 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 reduced overhead for the system.
The FM24C04A provides substantial benefits to users
of serial EEPROM, yet these benefits are available in
a hardware drop-in replacement. The FM24C04A is
available in industry standard 8-pin packages using a
two-wire protocol. The specifications are 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. 3.0
Mar. 2005
Organized as 512 x 8 bits
High Endurance 10
45 Year Data Retention
NoDelay™ Writes
Advanced High-Reliability Ferroelectric Process
Up to 1 MHz maximum bus frequency
Direct hardware replacement for EEPROM
12
Read/Writes
Industry Standard Configuration
Pin Configuration
Pin Names
A1-A2
SDA
SCL
WP
VSS
VDD
Ordering Information
FM24C04A-S
FM24C04A-G
Low Power Operation
VSS
5V operation
150 A Active Current (100 kHz)
10 A Standby Current
Industrial Temperature -40 C to +85 C
8-pin SOIC (-S)
“Green” 8-pin SOIC (-G)
NC
A1
A2
1850 Ramtron Drive, Colorado Springs, CO 80921
Function
Device Select Address 1 and 2
Serial Data/Address
Serial Clock
Write Protect
Ground
Supply Voltage 5V
1
2
3
4
8-pin SOIC
“Green” 8-pin SOIC
Ramtron International Corporation
(800) 545-FRAM, (719) 481-7000
8
7
6
5
VDD
WP
SCL
SDA
www.ramtron.com
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FM24C04A-GTR Summary of contents

Page 1

... The FM24C04A provides substantial benefits to users of serial EEPROM, yet these benefits are available in a hardware drop-in replacement. The FM24C04A is available in industry standard 8-pin packages using a two-wire protocol. The specifications are guaranteed over an industrial temperature range of -40°C to +85° ...

Page 2

... Write Protect: When WP is high the entire array is write-protected. When WP is low, all addresses may be written. This pin is internally pulled down connect VDD Supply Supply Voltage: 5V VSS Supply Ground Rev. 3.0 Mar. 2005 Address Latch Figure 1. Block Diagram FM24C04A 128 x 32 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 FM24C04A 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

... When a read operation is complete and no more data is needed, the receiver must not acknowledge acknowledges the last byte, this will cause the FM24C04A to attempt to drive the bus on the next clock while the master is sending a new command such as a Stop command. Slave Address The first byte that the FM24C04A expects after a start condition is the slave address ...

Page 5

... After all address information has been transmitted, data transfer between the bus master and the FM24C04A can begin. For a read operation the FM24C04A will place 8 data bits on the bus then wait for an acknowledge. If the acknowledge occurs, the next sequential byte will be transferred. If the acknowledge is not sent, the read operation is concluded ...

Page 6

... Current Address & Sequential Read The FM24C04A uses an internal latch to supply the lower 8 address bits for a read operation. A current address read uses the existing value in the address latch as a starting place for the read operation ...

Page 7

... By FM24C04A Address Start By Master S Slave Address FM24C04A Endurance Internally, a FRAM operates with a read and restore mechanism. Therefore, endurance cycles are applied for each read or write cycle. The FRAM architecture is based on an array of rows and columns. Rows are Rev. 3.0 Mar. 2005 ...

Page 8

... DD Min Typ 4.5 5.0 115 400 800 1 -0 other inputs -0. Stop command issued FM24C04A Ratings -1.0V to +7.0V -1.0V to +7.0V and V < V +1. - 125 C 300 C 3kV 300V MSL-1 Max Units Notes 5 150 A 500 A 1000 A 10 ...

Page 9

... Min 0 100 0 4.7 1.3 4.0 0.6 3 4.7 1.3 4.0 0.6 4.7 0 250 100 1000 300 4.0 0 5V) DD Max Units FM24C04A Max Min Max Units Notes 400 0 1000 kHz 0.6 s 0.4 s 0.9 0.55 s 0.5 s 0. 100 ns 300 300 ns 1 300 100 ...

Page 10

... SU:STO SDA Start Data Retention (V = 4.5V to 5.5V, + Parameter Data Retention Rev. 3.0 Mar. 2005 t HIGH 1/fSCL t AA Stop Start t HD:DAT t t SU:DAT HD:STA Stop Start Min Units 45 Years FM24C04A LOW t HD:DAT t SU:DAT t DH Acknowledge t AA Acknowledge Notes ...

Page 11

... SOIC Package Marking Scheme Legend: XXXX= part number, P= package type LLLLLLL= lot code XXXXXXX-P LLLLLLL RIC=Ramtron Int’l Corp, YY=year, WW=work week RICYYWW Example: FM24C04A, Standard SOIC package, Year 2004, Work Week 39 FM24C04A-S A40003S RIC0439 Rev. 3.0 Mar. 2005 Recommended PCB Footprint 3.90 ...

Page 12

... Changed to Production status. Added “green” packaging option. Changed input leakage spec to 1uA. Changed Data Retention spec. Added ESD and package MSL ratings. Modified note 3 (input leakage table. Updated package drawing. Updated rev numbering and footer. Removed applications section. FM24C04A ...

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