STK14D88_08 SIMTEK [Simtek Corporation], STK14D88_08 Datasheet

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STK14D88_08

Manufacturer Part Number
STK14D88_08
Description
32Kx8 Autostore nvSRAM
Manufacturer
SIMTEK [Simtek Corporation]
Datasheet
This product conforms to specifications per the
terms of Simtek standard warranty. The product
has completed Simtek internal qualification testing
and has reached production status.
BLOCK DIAGRAM
FEATURES
• 25, 35, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Automatic Non-volatile STORE on Power Loss
• Non-Volatile STORE Under Hardware or Software
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
• 200K STORE Cycles
• 20-Year Non-volatile Data Retention
• Single 3.0V +20%, -10% Power Supply
• Commercial, Industrial Temperatures
• Small Footprint SOIC & SSOP Packages (RoHS-
Control
Compliant
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
A
A
A
A
A
A
A
A
A
5
6
7
8
9
11
12
13
14
0
1
2
3
4
5
6
7
A
COLUMN DEC
COLUMN I/O
0
A
STATIC RAM
1
512 X 512
A
ARRAY
2
A
3
A
4
Quatum Trap
A
512 X 512
10
STORE
RECALL
1
DESCRIPTION
The Simtek STK14D88 is a 256Kb fast static RAM
with a non-volatile Quantum Trap storage element
included with each memory cell.
The SRAM provides the fast access & cycle times,
ease of use and unlimited read & write endurance of
a normal SRAM.
Data transfers automatically to the non-volatile stor-
age cells when power loss is detected (the STORE
operation). On power up, data is automatically
restored to the SRAM (the RECALL operation). Both
STORE and RECALL operations are also available
under software control.
The Simtek nvSRAM is the first monolithic non-vola-
tile memory to offer unlimited writes and reads. It is
the highest performance, most reliable non-volatile
memory available.
V
CONTROL
CONTROL
CC
RECALL
POWER
STORE/
Document Control #ML0033 Rev 2.0
V
CAP
SOFTWARE
DETECT
32Kx8 Autostore nvSRAM
Jan 2008
HSB
STK14D88
A
13
G
– A
E
W
0

Related parts for STK14D88_08

STK14D88_08 Summary of contents

Page 1

... SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control. The Simtek nvSRAM is the first monolithic non-vola- tile memory to offer unlimited writes and reads the highest performance, most reliable non-volatile memory available. V Quatum Trap ...

Page 2

STK14D88 V CAP (TOP ...

Page 3

ABSOLUTE MAXIMUM RATINGS Voltage on Input Relative to Ground . . . . . . . . . . . . . –0.5V to 4.1V Voltage on Input Relative ...

Page 4

STK14D88 AC TEST CONDITIONS Input Pulse Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to ...

Page 5

SRAM READ CYCLES #1 & #2 SYMBOLS NO Alt ELQV AVAV ELEH AVQV AVQV GLQV ...

Page 6

STK14D88 SRAM WRITE CYCLES #1 & #2 SYMBOLS NO Alt AVAV AVAV WLWH WLEH ELWH ELEH DVWH DVEH DW ...

Page 7

AutoStore™/POWER-UP RECALL SYMBOLS NO. Standard Alternate 22 t HRECALL STORE HLHZ 24 V SWITCH 25 V CCRISE Note i: t starts from the time V HRECALL Note SRAM WRITE has not taken place since ...

Page 8

STK14D88 SOFTWARE-CONTROLLED STORE/RECALL CYCLE Symbols NO. E Cont Alternate STORE / RECALL Initiation Cycle Time AVAV Address Set-up Time AVEL Clock Pulse Width ELEH Address Hold ...

Page 9

HARDWARE STORE CYCLE SYMBOLS Standard Alternate DELAY HLQZ HLHX Note n: Read and Write cycles in Progress before HSB is asserted are given this minimum amount of time to complete. HARDWARE STORE CYCLE ...

Page 10

STK14D88 MODE SELECTION Notes q: The six consecutive addresses must be in the order listed. W ...

Page 11

... WRITE cycle and must remain stable until either goes high at the end of the cycle. The data on the common I/O pins DQ0-7 will be written into memory valid t before the end controlled WRITE or t before the end controlled WRITE. ...

Page 12

... During the STORE cycle, previous data is erased and then the new data is programmed into the non- volatile elements. Once a STORE cycle is initiated, further memory inputs and outputs are disabled until the cycle is completed. Document Control #ML0033 Rev 2.0 Jan 2008 ...

Page 13

... AA, 55, 00, FF, A5, or 5A. End product’s firmware should not assume an NV array set programmed state. Routines that check memory content val- ues to determine first time system configuration, cold or warm boot status, etc. should always pro- gram a unique NV pattern (e ...

Page 14

... STK14D88 NOISE CONSIDERATIONS The STK14D88 is a high-speed memory and so must have a high-frequency bypass capacitor of 0.1 µF connected between both V ground plane with no plane break to chip V leads and traces that are as short as possible. As with all high-speed CMOS ICs, careful routing of power, ground, and signals will reduce circuit noise. ...

Page 15

ORDERING INFORMATION STK14D88 Document Control #ML0033 Rev 2.0 Jan 2008 Packaging Option Blank= Tube TR= Tape & Reel Temperature Range Blank=Commercial ( Industrial (-45 to +85 C) Access Time 25=25 ns 35=35 ...

Page 16

STK14D88 Ordering Codes Part Number Description STK14D88-NF25 3V 32Kx 8 AutoStore nvSRAM SOP32-300 STK14D88-NF35 3V 32Kx 8 AutoStore nvSRAM SOP32-300 STK14D88-NF45 3V 32Kx 8 AutoStore nvSRAM SOP32-300 STK14D88-NF25TR 3V 32Kx 8 AutoStore nvSRAM SOP32-300 STK14D88-NF35TR 3V 32Kx 8 AutoStore nvSRAM ...

Page 17

Pin 300 mil SOIC Pin 1 Index 0.026 0.66 ( 0.032 0.81 0.12 0. 0.014 0.36 0.020 0.51 0.006 0. 0.013 0.32 Document Control #ML0033 Rev 2.0 Jan 2008 PACKAGE DRAWINGS 0.810 20. ...

Page 18

STK14D88 48 Pin 300 mil SSOP 0.400 ) ( 10.16 10.41 0.410 7.42 0.292 ) ( 0.299 7.59 .045 ( ) 11.43 .055 13.97 Pin 1 indicator .045 DIA. (11.43) .020 (5.1) SIDE VIEW 0.008 0.025 (0.635) 0.0135 0.620 ( ...

Page 19

Document Revision History Rev Date 1.0 December 2004 1.1 February 2005 1.3 August 2005 1.4 December 2005 1.5 February 2006 1.6 March 2006 Document Control #ML0033 Rev 2.0 Jan 2008 Change Initial Revision Fixed Number of pins typographical error, “R” ...

Page 20

STK14D88 1.7 February 2007 2.0 January 2008 SIMTEK STK14D88 Datasheet, January 2008 Copyright 2008, Simtek Corporation. All rights reserved. This datasheet may only be printed for the expressed use of Simtek Customers. No part of the datasheet may be reproduced ...

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