FM28V010 Ramtron Corporation, FM28V010 Datasheet

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FM28V010

Manufacturer Part Number
FM28V010
Description
128kbit Bytewide F-ram Memory Features
Manufacturer
Ramtron Corporation
Datasheet
Preliminary
FM28V010
128Kbit Bytewide F-RAM Memory
Features
128Kbit Ferroelectric Nonvolatile RAM
Superior to Battery-backed SRAM Modules
General Description
The FM28V010 is a 16,384 x 8 nonvolatile memory
that reads and writes like a standard SRAM. A
ferroelectric random access memory or F-RAM is
nonvolatile, which means that data is retained after
power is removed. It provides data retention for over
10 years while eliminating the reliability concerns,
functional
complexities of battery-backed SRAM (BBSRAM).
Fast write timing and virtually unlimited write
endurance make F-RAM superior to other types of
memory.
In-system operation of the FM28V010 is very similar
to other RAM devices and can be used as a drop-in
replacement for standard SRAM. Read and write
cycles may be triggered by /CE or simply by
changing the address. The F-RAM memory is
nonvolatile due to its unique ferroelectric memory
process. These features make the FM28V010 ideal
for
frequent or rapid writes in the form of an SRAM.
Device specifications are guaranteed over the
industrial temperature range -40°C to +85°C.
This is a product that has fixed target specifications but are subject
to change pending characterization results.
Rev. 1.0
Oct. 2010
Organized as 16,384 x 8
10
NoDelay™ Writes
Page Mode Operation to 33MHz
Advanced High-Reliability Ferroelectric Process
No battery concerns
Monolithic reliability
True surface mount solution, no rework steps
Superior for moisture, shock, and vibration
Resistant to negative voltage undershoots
nonvolatile
14
Read/Write Cycles
disadvantages,
memory applications requiring
and
system
design
SRAM Replacement
Low Power Operation
Industry Standard Configurations
Pin Configuration
FM28V010-SG
FM28V010-SGTR
JEDEC 16Kx8 SRAM pinout
60 ns Access Time, 90 ns Cycle Time
2.0V – 3.6V Power Supply
Standby Current 90 µA (typ)
Active Current 7 mA (typ)
Industrial Temperature -40° C to +85° C
28-pin “Green”/RoHS SOIC
1850 Ramtron Drive, Colorado Springs, CO 80921
Ordering Information
Ramtron International Corporation
28-pin “Green”/RoHS SOIC
28-pin “Green”/RoHS SOIC,
Tape & Reel
(800) 545-FRAM, (719) 481-7000
http://www.ramtron.com
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FM28V010 Summary of contents

Page 1

... Superior for moisture, shock, and vibration • Resistant to negative voltage undershoots General Description The FM28V010 is a 16,384 x 8 nonvolatile memory that reads and writes like a standard SRAM. A ferroelectric random access memory or F-RAM is nonvolatile, which means that data is retained after power is removed. It provides data retention for over ...

Page 2

... The entire address is latched internally at this point. /WE Input Write Enable: A write cycle begins when /WE is asserted. The rising edge causes the FM28V010 to write the data on the DQ bus to the F-RAM array. The falling edge of /WE latches a new column address for fast page mode write cycles. /OE Input Output Enable: When /OE is low, the FM28V010 drives the data bus when valid data is available ...

Page 3

... Read cycle and A(13:3) is latched then. 4) Addresses A(2:0) must remain stable for at least 15 ns during page mode operation. Rev. 1.0 Oct. 2010 A(2:0) Operation X Standby/Idle V Read Change Page Mode Read V Random Read 2 V /CE-Controlled Write /WE-Controlled Write 4 V Page Mode Write X Starts Precharge FM28V010 - 16Kx8 F-RAM Page ...

Page 4

... Data polling, a technique used with EEPROMs to determine if a write is complete, is unnecessary. Page Mode Operation The FM28V010 provides the user fast access to any data within a row element. Each row has eight column locations. An access can start anywhere within a row and other column locations may be accessed without the need to toggle the /CE pin ...

Page 5

... The device automatically detects an upper order address change which starts a precharge operation, the new address is latched, and Endurance The FM28V010 is capable of being accessed at least 14 10 times – reads or writes. An F-RAM memory operates with a read and restore mechanism. ...

Page 6

... SRAM Drop-In Replacement The FM28V010 has been designed drop-in replacement for standard asynchronous SRAMs. The device does not require /CE to toggle for each new address. /CE may remain low indefinitely while V is applied. When /CE is low, the device automatically detects address changes and a new access begins. It also allows page mode operation at speeds up to 33MHz ...

Page 7

... Std JESD22-C101-A) (JEDEC Std JESD22-A115-A) = 2.0V to 3.6V unless otherwise specified) DD Min 2.0 0 -0.3 2 mA, V =2.7V -0.2 = -100 µ mA, V =2.7V 150 µA) -0.2V). DD FM28V010 - 16Kx8 F-RAM Ratings -1.0V to +4.5V -1.0V to +4.5V and V < -55°C to +125°C 260° C 2kV 1.25kV 200V MSL-2 Typ Max Units Notes 3.3 3 ...

Page 8

... V 2.0 to 2.7V DD Min Max 105 (to /WE low) 20 (to /WE low 105 2.0V to 3.6V unless otherwise specified) DD min) DD waveform. FM28V010 - 16Kx8 F-RAM V 2.7 to 3.6V DD Min Max Units - ...

Page 9

... Read Cycle Timing 2 (/CE-controlled) CE A(13:0) OE DQ(7:0) Rev. 1.0 Oct. 2010 ) Min 10 = 3.3V) DD Min - - 1. FM28V010 - 16Kx8 F-RAM Max Units Notes - Years Max Units Notes OHZ Page ...

Page 10

... Write Cycle Timing 2 (/CE-Controlled) NOTE: See Write Operation section for detailed description (page 4). Rev. 1.0 Oct. 2010 Note: /OE is low only to show effect of / pins WLC out D in FM28V010 - 16Kx8 F-RAM out Page ...

Page 11

... Page Mode Write Cycle Timing Although sequential column addressing is shown not required. Power Cycle Timing Rev. 1.0 Oct. 2010 Note: /OE is low only to show effect of / pins AWH t WLA out FM28V010 - 16Kx8 F-RAM D in Page ...

Page 12

... All dimensions in millimeters Pin 1 17.90 ±0.20 1.27 typ 0.33 0.51 SOIC Package Marking Scheme Legend: RAMTRON XXXXXXX-P RYYWWLLLLLLL Example: FM28V010, “Green”/RoHS SOIC package, Rev. 1.0 Oct. 2010 7.50 ±0.10 10.30 ±0.30 2.35 2.65 0.10 0.30 XXXXXX= part number, P= package type (-SG) R=Rev, YY=year, WW=work week, LLLLLL= lot code R=Rev. A, Year 2010, Work Week 21, Lot code 96464473 ...

Page 13

... Revision History Revision Date Summary 1.0 10/20/2010 Initial release. Rev. 1.0 Oct. 2010 FM28V010 - 16Kx8 F-RAM Page ...

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