FM24C04A_05 RAMTRON [Ramtron International Corporation], FM24C04A_05 Datasheet

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FM24C04A_05

Manufacturer Part Number
FM24C04A_05
Description
4Kb FRAM Serial Memory
Manufacturer
RAMTRON [Ramtron International Corporation]
Datasheet
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_05 Summary of contents

Page 1

FM24C04A 4Kb FRAM Serial Memory Features 4K bit Ferroelectric Nonvolatile RAM Organized as 512 x 8 bits 12 High Endurance 10 Read/Writes 45 Year Data Retention NoDelay™ Writes Advanced High-Reliability Ferroelectric Process Fast Two-wire Serial Interface MHz ...

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Counter ` Serial to Parallel SDA Converter SCL WP Control Logic A1 A2 Pin Description Pin Name I/O Pin Description A1-A2 Input Address 1-2: The address pins set the device select address. The device address value in the 2-wire slave ...

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Overview The FM24C04A is a serial FRAM memory. The memory array is logically organized as 512 x 8 and is accessed using an industry standard two-wire interface. Functional operation of the FRAM is similar to serial EEPROMs. The major difference ...

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Stop Condition A Stop condition is indicated when the bus master drives SDA from low to high while the SCL signal is high. All operations must end with a Stop condition operation is pending when a stop is ...

Page 5

Figure 4. Slave Address No word address occurs for a read operation. Reads always use the lower 8-bits that are held internally in th the address latch and the 9 address bit is part of the slave address. Reads always ...

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Start By Master S Slave Address By FM24C04A Start By Master S Slave Address By FM24C04A Read Operation There are two basic types of read operations. They are current address read and selective address read. For current address reads, the ...

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Start By Master S By FM24C04A Start Address By Master S Slave Address By FM24C04A Address Start By Master S Slave Address FM24C04A Endurance Internally, a FRAM operates with a read and restore mechanism. Therefore, endurance cycles ...

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Electrical Specifications Absolute Maximum Ratings Symbol V Power Supply Voltage with respect Voltage on any signal pin with respect Storage Temperature STG T Lead Temperature (Soldering, 10 seconds) LEAD V Electrostatic Discharge ...

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AC Parameters ( Symbol Parameter f SCL Clock Frequency SCL t Clock Low Period LOW t Clock High Period HIGH t SCL Low to SDA Data Out Valid AA t ...

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Diagram Notes All start and stop timing parameters apply to both read and write cycles. Clock specifications are identical for read and write cycles. Write timing parameters apply to slave address, word address, and write data bits. Functional relationships are ...

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Mechanical Drawing 8-pin SOIC (JEDEC Standard MS-012 variation AA) Pin 1 4.90 0.10 ± 1.27 0.33 0.51 Refer to JEDEC MS-012 for complete dimensions and notes. All dimensions in millimeters. SOIC Package Marking Scheme Legend: XXXX= part number, P= package ...

Page 12

Revision History Revision Date 1.0 7/26/02 2.0 7/31/03 2.1 3/17/04 3.0 3/9/05 Rev. 3.0 Mar. 2005 Summary Preliminary Changed to Production status. Added “green” packaging option. Changed input leakage spec to 1uA. Changed Data Retention spec. Added ESD and package ...

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