STK16C88-3_08 SIMTEK [Simtek Corporation], STK16C88-3_08 Datasheet

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STK16C88-3_08

Manufacturer Part Number
STK16C88-3_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.
FEATURES
• Fast 35 ns Read Access & R/W Cycle Time
• Directly Replaces Battery-Backed SRAM
• Unlimited Read/Write Endurance
• Automatic Non-volatile STORE on Power Loss
• Automatic RECALL to SRAM on Power Up
• Non-Volatile STORE and RECALL Under
• 1 Million STORE Cycles
• 100-Year Non-volatile Data Retention
• Single 3.3V +0.3V Power Supply
• Commercial and Industrial Temperatures
• 28-pin 600-mil PDIP Package (RoHS-Compliant)
BLOCK DIAGRAM
Modules such as Dallas/Maxim DS1230W
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
0
COLUMN I/O
A
STATIC RAM
1
512 X 512
A
ARRAY
2
A
3
QUANTUM TRAP
A
4
A
512 x 512
10
STORE
RECALL
1
DESCRIPTION
The Simtek STK16C88-3 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.
CONTROL
RECALL
STORE/
Document Control #ML0019 Rev 2.0
SOFTWARE
DETECT
32Kx8 AutoStore+ nvSRAM
Jan, 2008
STK16C88-3
A
13
– A
G
E
W
0

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STK16C88-3_08 Summary of contents

Page 1

... Simtek standard warranty. The product has completed Simtek internal qualification testing and has reached production status. DESCRIPTION The Simtek STK16C88 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

... STK16C88-3 PIN CONFIGURATIONS (TOP Pin 600 mil PDIP PIN DESCRIPTIONS Pin Name A -A Input ...

Page 3

... SS SS 2.4 2.4 0 – 40 ° 1.0MHz) OUTPUT MAX UNITS CONDITIONS Δ Δ STK16C88 3.0V-3.6V) CC UNITS NOTES MAX 35ns AVAV 3 mA All Inputs Don’t Care ≥ (V – 0.2V All Others Cycling, CMOS Levels = 35ns, E ≥ V ...

Page 4

... AVQV 5 t AXQX ELEH 3 t AVQV 1 t ELQV 6 t ELQX 4 t GLQV 8 t GLQX 10 t ELICCH ACTIVE STANDBY 4 STK16C88-3-35 UNITS MIN MAX DATA VALID 11 t EHICCL 7 t EHQZ 9 t GHQZ DATA VALID ...

Page 5

... DVWH DATA VALID 20 t WLQZ HIGH IMPEDANCE AVAV 14 t ELEH 17 t AVEH 13 t WLEH 15 t DVEH HIGH IMPEDANCE 5 STK16C88 3.0V-3.6V) CC STK16C88-3-35 MIN MAX WHAX 16 t WHDX 21 t WHQX 19 t EHAX 16 t EHDX DATA VALID ...

Page 6

... STORE BROWN OUT BROWN OUT NO STORE DUE TO AutoStorePlus NO SRAM WRITES NO RECALL NO RECALL (V DID NOT GO (V DID NOT BELOW V BELOW V ) RESET 3.0V-3.6V) CC STK16C88-3 UNITS NOTES MIN MAX 550 500 2.7 2.95 2 stg BROWN OUT AutoStorePlus RECALL WHEN V RETURNS CC ) ABOVE V RESET SWITCH μs ...

Page 7

... Note l: The six consecutive addresses must be in the order listed. W must be high during all six consecutive E controlled cycles to enable a nonvolatile cycle. Note m: While there are 15 addresses on the STK16C88-3, only the lower 14 are used to control software modes. SOFTWARE STORE/RECALL CYCLE NO. SYMBOLS ...

Page 8

... STK16C88-3 The AutoStore+ STK16C88 fast 32K x 8 SRAM that does not lose its data on power-down. The data is preserved in integral Quantum Trap non- volatile storage elements when power is lost. Auto- matic STORE on power-down and automatic RECALL on power-up guarantee data integrity with- out the use of batteries ...

Page 9

... Figure 3 shows the same relationship for WRITE than 100%, only standby current is drawn when the READ chip is disabled. The overall average current drawn by the STK16C88-3 depends on the following items: 1) Valid READ cycle of chip enable; 3) the overall cycle rate for Valid READ Valid READ accesses ...

Page 10

... STK16C88-3 BEST PRACTICES nvSRAM products have been used effectively for over 15 years. While ease-of-use is one of the prod- uct’s main system values, experience gained work- ing with hundreds of applications has resulted in the following suggestions as best practices: • The non-volatile cells in an nvSRAM are pro- grammed on the test floor during final test and quality assurance ...

Page 11

... ORDERING INFORMATION STK16C88 ORDERING CODES Part Number STK16C88-3WF35 3.3V 32Kx8 AutoStore+ nvSRAM PDIP28-600 STK16C88-3WF35I 3.3V 32Kx8 AutoStore+ nvSRAM PDIP28-600 Document Control #ML0019 Rev 2.0 Jan, 2008 Temperature Range Blank = Commercial (0 to 70° Industrial (–40 to 85°C Access Time 35 = 35ns Lead Finish F = 100% Sn (Matte Tin) ...

Page 12

... STK16C88-3 28 Pin 600 mil PDIP Pin 1 Index 0.040 ( ) 1.02 0.050 1.27 ---- ---- (4.57) .180 0.595 0.625 0.600 0.660 Document Control #ML0019 Rev 2.0 Jan, 2008 PACKAGE DRAWING 1.440 ( 36.58 ) 1.460 37.08 0.014 0. 0.045 1. 0.022 0.56 0.060 1.52 15. 15.88 0.008 0. 0.38 0.015 ( 15.24 ) 16.76 12 0.530 ( 13.46 ) 0.550 13.97 0.015 (0.38) ---- ---- 0.125 (3.18) MIN 0.10 (2.54) BSC MIN DIM = INCHES ...

Page 13

... February 2007 2.0 January 2008 SIMTEK STK16C88-3 Datasheet, January 2008 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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