STK14C88 Simtek, STK14C88 Datasheet

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STK14C88

Manufacturer Part Number
STK14C88
Description
32Kx8 AutoStore nvSRAM
Manufacturer
Simtek
Datasheet

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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.
www.DataSheet4U.com
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
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
• 1 Million STORE Cycles
• 100-Year Non-volatile Data Retention
• Single 5V ± 10% Power Supply
• Commercial, Industrial, Military Temperatures
• 32-Pin 300 mil SOIC (RoHS-Compliant)
• 32-pin CDIP and LCC Packages
Software Control
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
STATIC RAM
COLUMN I/O
0
512 x 512
A
ARRAY
1
A
2
A
3
A
Quantum Trap
4
512 x 512
A
10
RECALL
STORE
1
DESCRIPTION
The Simtek STK14C88 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
CCX
CONTROL
CONTROL
RECALL
POWER
STORE/
Document Control #ML0014 Rev 0.3
V
CAP
SOFTWARE
DETECT
February 2007
32Kx8 AutoStore nvSRAM
A
0
HSB
G
E
W
- A
STK14C88
13

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STK14C88 Summary of contents

Page 1

... Simtek standard warranty. The product has completed Simtek internal qualification testing and has reached production status. DESCRIPTION The Simtek STK14C88 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 & ...

Page 2

... STK14C88 PIN CONFIGURATIONS CAP 32-Pin 300 mil SOIC 32-Pin 300 mil CDIP ...

Page 3

... STK14C88 Ratings” may cause permanent damage to the device. This is a stress rating only, and functional operation of the device at con- ditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rat- ing conditions for extended periods may affect reliability. ...

Page 4

... AVQV 5 t AXQX AVAV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE STANDBY 4 = 5.0V ± 10 STK14C88-25 STK14C88-35 STK14C88-45 MIN MAX MIN MAX MIN MAX ...

Page 5

... DATA VALID 20 t WLQZ HIGH IMPEDANCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH HIGH IMPEDANCE 5 STK14C88 = 5.0V ± 10 STK14C88-25 STK14C88-35 STK14C88-45 MIN MAX MIN MAX MIN MAX ...

Page 6

... STORE 26 t HLBL 23 t DELAY DATA VALID 6 I/O POWER Output High Z Standby Output Data Active Input Data Active Output High 5.0V ± 10 STK14C88 UNITS MIN MAX 10 ms μs 1 700 300 RECOVER HIGH IMPEDANCE DATA VALID NOTES NOTES ...

Page 7

... DELAY BROWN OUT BROWN OUT NO STORE AutoStore (NO SRAM WRITES) NO RECALL NO RECALL (V DID NOT GO (V DID NOT BELOW V ) BELOW V RESET 7 STK14C88 = 5.0V ± 10 STK14C88 UNITS NOTES MIN MAX 550 10 300 1 4.0 4.5 3 STORE BROWN OUT AutoStore RECALL WHEN V RETURNS CC ) ABOVE V RESET SWITCH e μ ...

Page 8

... RECALL Note r: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. Note s: While there are 15 addresses on the STK14C88, only the lower 14 are used to control software modes. Note t: I/O state assumes G < Activation of nonvolatile cycles does not depend on state of G. ...

Page 9

... The STK14C88 has two separate modes of opera- tion: mode and nonvolatile mode. In SRAM mode, the memory operates as a standard fast static . In nonvolatile mode, data is transferred RAM from to nonvolatile elements (the SRAM operation) or from nonvolatile elements to (the operation). In this mode RECALL tions are disabled. ...

Page 10

... In system power mode (Figure 3), both V READ V CAP the 68μF capacitor. In this mode the AutoStore func- Valid READ tion of the STK14C88 will operate on the stored sys- Valid READ tem charge as power goes down. The user must, Valid READ Valid READ however, guarantee that V Valid READ 3 ...

Page 11

... STK14C88 is connected for AutoStore operation or STORE (system CAP the STK14C88 will attempt to pull HSB low; if HSB (initiated by any doesn’t actually get below V ing to pull HSB low and abort the if HSB is used as a HARDWARE PROTECT The STK14C88 offers hardware protection against inadvertent ing low-voltage conditions ...

Page 12

... STK14C88 100 100 Cycle Time (ns) Figure 5: I (max) Reads cc Document Control #ML0014 Rev 0.3 February, 2007 100 TTL CMOS 150 200 TTL 40 CMOS 100 150 200 Cycle Time (ns) Figure 6: I (max) Writes cc ...

Page 13

... Commercial and Industrial Ordering Information STK14C88 - Document Control #ML0014 Rev 0.3 February 2007 Packaging Option Blank = Tube TR = Tape and Reel Temperature Range Blank = Commercial (0 to 70° Industrial (-40 to 85°C) Access Time 25 = 25ns 35 = 35ns 45 = 45ns Lead Finish F = 100% Sn (Matte Tin) Package ...

Page 14

... STK14C88 STK14C88 - Document Control #ML0014 Rev 0.3 February, 2007 Military Ordering Information Temperature Range Access Time Package Retention / Endurance Military (-55 to 125° 35ns 45 = 45ns L=Ceramic 32-pad LCC C=Ceramic 32-pin 300 mil CDIP K=Ceramic 32-pin 300 mil CDIP with solder dip finish ...

Page 15

... STK14C88-NF45ITR 5V 32Kx8 AutoStore nvSRAM SOP32-300 STK14C88-C45I 5V 32Kx8 AutoStore nvSRAM CDIP32-300 STK14C88-L45I 5V 32Kx8 AutoStore nvSRAM LCC32-450 STK14C88-5L35M 5V 32Kx8 AutoStore nvSRAM LCC32-450 STK14C88-5L45M 5V 32Kx8 AutoStore nvSRAM LCC32-450 STK14C88-5C35M 5V 32Kx8 AutoStore nvSRAM CDIP32-300 STK14C88-5C45M 5V 32Kx8 AutoStore nvSRAM CDIP32-300 STK14C88-5K35M 5V 32Kx8 AutoStore nvSRAM CDIP32-300 STK14C88-5K45M 5V 32Kx8 AutoStore nvSRAM CDIP32-300 Document Control #ML0014 Rev 0 ...

Page 16

... STK14C88 32 Lead 300 mil SOIC Gull Wing Pin 1 Index 0.026 0.66 ( 0.032 0.81 0.12 0. 0.014 0.36 0.020 0.51 0.006 ( ) 0.013 Document Control #ML0014 Rev 0.3 February, 2007 Package Diagrams 0.810 20. 0.822 20.88 ) 0.15 0.32 MIN DIM = INCHES MAX ( ) MIN DIM = mm MAX 16 0.292 7. 0.300 7.60 0.405 10.29 ( 0.419 10.64 .050 (1.27) BSC 0.090 2. 0.100 2. 2.18 0.086 ...

Page 17

... Document Control #ML0014 Rev 0.3 February 2007 ( ) 40.25 1.585 41.02 1.615 ( ) ( ) .048 1.22 0.41 0.51 .052 1. .290 7.37 .310 7.87 .009 .012 ( ) .300 7.62 .320 8.13 MIN DIM = INCHES MAX ( MIN ) DIM = mm MAX 17 STK14C88 .280 .310 PIN 16 .125 (3.18) MIN .090 ( 2.29 ) .110 2. 0.23 0. 7.36 7.87 .040 .060 ( ) 1.02 1.52 ...

Page 18

... STK14C88 32 Lead 450 mil Ceramic LCC Pad 32 Pad 1 C.020±.010 TYP .050±.005 .450-.010 (R.009) (C.004) .025±.003 .050 .400 [P=.050X8] Document Control #ML0014 Rev 0.3 February, 2007 .550±.005 +.005 NOTES: Pad 1 Index Pad 32 1. GOLD PLATE 85~220‚ INCHES OVER 50~350 INCHES NICKEL. ...

Page 19

... February 2007 SIMTEK STK14C88 Datasheet, February 2007 Copyright 2007, 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 in any other form or means without the express written permission from Simtek Corporation. The information contained in this publication is believed to be accurate, but changes may be made without notice ...

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