STK12C68-5L55M Cypress Semiconductor Corp, STK12C68-5L55M Datasheet - Page 2

• Manufacturer Part Number: STK12C68-5L55M
• Description: STK12C68-5L55M
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK12C68-5L55M

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 64K (8K x 8)
• Speed: 35ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 28-LCC
• Word Size: 8b
• Organization: 8Kx8
• Density: 64Kb
• Interface Type: Parallel
• Access Time (max): 55ns
• Operating Supply Voltage (typ): 5V
• Package Type: CLCC
• Operating Temperature Classification: Military
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -55C to 125C
• Pin Count: 28
• Mounting: Surface Mount
• Supply Current: 75mA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Contents
Features................................................................................ 1
Functional Description........................................................ 1
Logic Block Diagram........................................................... 1
Contents ............................................................................... 2
Pin Configurations .............................................................. 3
Pin Definitions ..................................................................... 3
Device Operation ................................................................. 4
SRAM Read .......................................................................... 4
SRAM Write .......................................................................... 4
AutoStore Operation ........................................................... 4
AutoStore Inhibit Mode ....................................................... 5
Hardware STORE (HSB) Operation .................................... 5
Hardware RECALL (Power Up)........................................... 5
Software STORE .................................................................. 5
Software RECALL................................................................ 5
Data Protection .................................................................... 6
Noise Considerations.......................................................... 6
Hardware Protect ................................................................. 6
Low Average Active Power................................................. 6
Preventing Store.................................................................. 6
Best Practices...................................................................... 7
Document Number: 001-51027 Rev. *A
Maximum Ratings................................................................ 8
Operating Range.................................................................. 8
DC Electrical Characteristics ............................................. 8
Data Retention and Endurance .......................................... 9
Capacitance ......................................................................... 9
Thermal Resistance............................................................. 9
AC Test Conditions ............................................................. 9
AC Switching Characteristics .......................................... 10
AutoStore or Power Up RECALL ..................................... 12
Software Controlled STORE/RECALL Cycle................... 13
Hardware STORE Cycle ..................................................... 14
Switching Waveform .......................................................... 14
Part Numbering Nomenclature......................................... 15
Ordering Information.......................................................... 15
Package Diagrams............................................................. 17
Document History Page .................................................... 21
Sales, Solutions, and Legal Information ......................... 21
SRAM Read Cycle ....................................................... 10
SRAM Write Cycle........................................................ 11
Worldwide Sales and Design Support.......................... 21
Products ....................................................................... 21
STK12C68
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