STK11C88_08 SIMTEK [Simtek Corporation], STK11C88_08 Datasheet

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STK11C88_08

Manufacturer Part Number
STK11C88_08
Description
32Kx8 SoftStore 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, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Pin Compatible with Industry Standard SRAMs
• Software-initiated STORE and RECALL
• Automatic RECALL to SRAM on Power Up
• Unlimited RECALL Cycles
• 1 Million Store Cycles
• 100-Year Non-volatile Data Retention
• Single 5.0V +10% Power Supply
• Commercial and Industrial Temperatures
• 28-pin 300-mil and 330-mil SOIC Packages
(RoHS-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
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
1
RECALL
DESCRIPTION
The Simtek STK11C88 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 under software control to the non-vol-
atile storage cell (the STORE operation). On power
up, data is automatically restored to the SRAM (the
RECALL operation). RECALL operations are also
available under software control.
The Simtek nvSRAM is the first monolithic non-
volatile memory to offer unlimited writes and reads.
It is the highest performance, most reliable non-
volatile memory available.
CONTROL
RECALL
STORE/
Document Control #ML0012 Rev 2.0
SOFTWARE
DETECT
Jan. 2008
32Kx8 SoftStore nvSRAM
A
STK11C88
13
G
– A
E
W
0

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STK11C88_08 Summary of contents

Page 1

... SRAM (the RECALL operation). RECALL operations are also available under software control. The Simtek nvSRAM is the first monolithic non- volatile memory to offer unlimited writes and reads the highest performance, most reliable non- volatile memory available. QUANTUM TRAP ...

Page 2

STK11C88 PIN CONFIGURATIONS (TOP ...

Page 3

ABSOLUTE MAXIMUM RATINGS Voltage on Input Relative to Ground . . . . . . . . . . . . . .–0.5V to 7.0V Voltage on Input Relative ...

Page 4

STK11C88 SRAM READ CYCLES #1 & #2 SYMBOLS NO. #1, #2 Alt ELQV ACS AVAV , ELEH AVQV GLQV ...

Page 5

SRAM WRITE CYCLES #1 & 5.0V + 10%) CC SYMBOLS NO Alt AVAV AVAV WLWH WLEH ELWH ELEH ...

Page 6

STK11C88 SRAM WRITE CYCLE #2: E Controlled ADDRESS 18 t AVEL E W DATA IN DATA OUT AutoStore™ INHIBIT/POWER-UP RECALL SYMBOLS NO. Standard 22 t Power-up RECALL Duration RESTORE 23 t STORE Cycle Duration STORE 24 V Low Voltage Trigger ...

Page 7

AutoStore™ INHIBIT/POWER-UP RECALL SWITCH 25 V RESET STORE INHIBIT POWER-UP RECALL 22 t RESTORE DQ (DATA OUT) POWER-UP RECALL Document Control #ML0012 Rev 2.0 Jan, 2008 BROWN OUT BROWN OUT STORE INHIBIT STORE INHIBIT NO ...

Page 8

STK11C88 SOFTWARE STORE/RECALL MODE SELECTION 0E38 31C7 03E0 L H 3C1F 303F 0FC0 0E38 31C7 03E0 L H 3C1F 303F 0C63 Note l: The six consecutive addresses must be in the order listed. W ...

Page 9

... The STK11C88 is a versatile memory chip that pro- vides several modes of operation. The STK11C88 operates like a standard 32K x 8 array of non-volatile storage elements shadow the data can be copied to non-volatile SRAM. SRAM memory or non-volatile data can be recalled to the . SRAM NOISE CONSIDERATIONS Note that the STK11C88 is a high-speed memory and so must have a high-frequency bypass capaci- tor of approximately 0.1μ ...

Page 10

STK11C88 Internally two-step procedure. First, RECALL the data is cleared, and second, the nonvola- SRAM tile information is transferred into the After the t cycle time the RECALL be ready for and READ WRITE operation in no way ...

Page 11

... Final NV patterns are typically repeating patterns of AA, 55, 00, FF, A5, or 5A. End product’s firmware should not assume an NV array set pro- grammed state. Routines that check memory content values to determine first time system Document Control #ML0012 Rev 2.0 Jan, 2008 configuration, cold or warm boot status, etc ...

Page 12

STK11C88 ORDERING INFORMATION STK11C88 - Document Control #ML0012 Rev 2.0 Jan, 2008 Packaging Option Blank = Tube TR = Tape and Reel Temperature Range Blank = Commercial (0 to 70° Industrial (–40 to ...

Page 13

Ordering Codes Part Number STK11C88-SF25 5V 32Kx8 SoftStore nvSRAM SOP28-330 STK11C88-SF45 5V 32Kx8 SoftStore nvSRAM SOP28-330 STK11C88-NF25 5V 32Kx8 SoftStore nvSRAM SOP28-300 STK11C88-NF45 5V 32Kx8 SoftStore nvSRAM SOP28-300 STK11C88-SF25TR 5V 32Kx8 SoftStore nvSRAM SOP28-330 STK11C88-SF45TR 5V 32Kx8 SoftStore nvSRAM SOP28-330 ...

Page 14

STK11C88 28 - Pin 300 mil SOIC Pin 1 Index ) 0.014 0.35 ( 0.019 0.48 0.009 0. 0.013 0.32 Document Control #ML0012 Rev 2.0 Jan, 2008 Package Drawings .050 (1.27) BSC 0.701 17. 0.711 18.06 ...

Page 15

Pin 330 mil SOIC 0.713 0.733 0.020 0.508 ( ) 0.014 0.356 0.336 8.534 ( ) 0.326 8.280 Pin 1 0.014 0.356 ( ) 0.008 0.203 Document Control #ML0012 Rev 2.0 Jan, 2008 18. 18.62 0.112 ...

Page 16

STK11C88 Document Revision History Date Revision December 2002 0.0 September 2003 0.1 March 2006 0.2 February 2007 0.3 July 2007 0.4 2.0 January 2008 SIMTEK STK11C88 Datasheet, January 2008 Copyright 2008, Simtek Corporation. All rights reserved. This datasheet may only ...

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