Cypress STK16C88-3 - Manual
Cypress STK16C88-3 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Pin Configurations
- Page 3 – Software STORE
- Page 4 – Hardware Protect; Noise Considerations; Low Average Active Power; Figure 2; Best Practices
- Page 6 – DC Electrical Characteristics
- Page 7 – Capacitance; Thermal Resistance; AC Test Conditions
- Page 8 – AC Switching Characteristics; SRAM Read Cycle; Switching Waveforms
- Page 12 – Ordering Information; Commercial; Part Numbering Nomenclature; Lead Finish
- Page 13 – Package Diagrams
- Page 14 – Document History Page; Worldwide Sales and Design Support; Change
STK16C88-3
256 Kbit (32K x 8) AutoStore+ nvSRAM
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Document Number: 001-50594 Rev. **
Revised January 29, 2009
Features
■
Fast 35ns Read access and R/W cycle time
■
Directly replaces battery-backed SRAM modules such as
Dallas/Maxim DS1230W
■
Automatic nonvolatile STORE on power loss
■
Nonvolatile STORE under Software control
■
Automatic RECALL to SRAM on power up
■
Unlimited Read/Write endurance
■
1,000,000 STORE cycles
■
100 year data retention
■
Single 3.3V+0.3V power supply
■
Commercial and Industrial Temperatures
■
28-pin (600 mil) PDIP package
■
RoHS compliance
Functional Description
The Cypress STK16C88-3 is a 256Kb fast static RAM with a
nonvolatile element in each memory cell. The embedded
nonvolatile elements incorporate QuantumTrap
™
technology
producing the world’s most reliable nonvolatile memory. The
SRAM provides unlimited read and write cycles, while
independent, nonvolatile data resides in the highly reliable
QuantumTrap cell. Data transfers from the SRAM to the
nonvolatile elements (the STORE operation) takes place
automatically at power down. On power up, data is restored to
the SRAM (the RECALL operation) from the nonvolatile
memory. Both the STORE and RECALL operations are also
available under software control.
Logic Block Diagram
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Summary
STK16C88-3 Document Number: 001-50594 Rev. ** Page 2 of 14 Pin Configurations Figure 1. Pin Diagram - 28-Pin PDIP Table 1. Pin Definitions - 28-Pin PDIP Pin Name Alt IO Type Description A 0 –A 14 Input Address Inputs. Used to select one of the 32,768 bytes of the nvSRAM. DQ 0 -DQ 7 Input or Output B...
STK16C88-3 Document Number: 001-50594 Rev. ** Page 3 of 14 Device Operation The AutoStore+ STK16C88-3 is a fast 32K x 8 SRAM that doesnot lose its data on power down. The data is preserved in integralQuantumTrap non-volatile storage elements when power is lost.Automatic STORE on power down and autom...
STK16C88-3 Document Number: 001-50594 Rev. ** Page 4 of 14 Hardware Protect The STK16C88-3 offers hardware protection againstinadvertent STORE operation and SRAM WRITEs during low voltage conditions. When V CAP <V SWITCH , all externally initiated STORE operations and SRAM WRITEs are inhibited. N...
