STK12C68-SF45I Cypress Semiconductor Corp, STK12C68-SF45I Datasheet - Page 2

• Manufacturer Part Number: STK12C68-SF45I
• Description: IC NVSRAM 64KBIT 45NS 28SOIC
• Manufacturer: Cypress Semiconductor Corp
• Series: -r

Specifications of STK12C68-SF45I

• Memory Size: 64K (8K x 8)
• Package / Case: 28-SOIC (8.69mm width)
• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Access Time: 45 ns
• Supply Voltage (max): 7 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Current: 65 mA
• Organization: 8 K x 8
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 4.5 V to 5.5 V
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Contents
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............................................................. 6
Data Protection ................................................................. 6
Noise Considerations....................................................... 6
Hardware Protect.............................................................. 6
Low Average Active Power .............................................. 6
Preventing Store............................................................... 6
Best Practices................................................................... 7
Maximum Ratings ............................................................. 8
Operating Range ............................................................... 8
Document Number: 001-51027 Rev. *D
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 .................................. 14
Software Controlled STORE/RECALL Cycle................ 15
Hardware STORE Cycle ................................................. 16
Switching Waveform ...................................................... 16
Part Numbering Nomenclature ...................................... 17
Ordering Information ...................................................... 17
Package Diagrams .......................................................... 18
Document History Page ................................................. 23
Sales, Solutions, and Legal Information ...................... 24
SRAM Read Cycle .................................................... 10
SRAM Write Cycle ..................................................... 12
Worldwide Sales and Design Support ....................... 24
Products .................................................................... 24
STK12C68
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