Cypress STK14C88-5 manual Features, Functional Description

Page 1

STK14C88-5

256 Kbit (32K x 8) AutoStore nvSRAM

Features

■35 ns and 45 ns access times

■Hands off automatic STORE on power down with external 68 µF capacitor

■STORE to QuantumTrap™ nonvolatile elements is initiated by software, hardware, or AutoStore™ on power down

■RECALL to SRAM initiated by software or power up

■Unlimited READ, WRITE, and RECALL cycles

■1,000,000 STORE cycles to QuantumTrap

■100 year data retention to QuantumTrap

■Single 5V+10% operation

■Military temperature

■32-pin (300 mil) CDIP and LCC (450 mil) packages

Functional Description

The Cypress STK14C88-5 is a 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. A hardware STORE is initiated with the HSB pin.

Logic Block Diagram

 

 

Quantum Trap

VCC

VCAP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

512 X 512

POWER

 

A5

 

 

 

 

 

 

STORE

CONTROL

 

A6

DECODER

 

 

 

ARRAY

CONTROL

 

A7

 

 

A8

 

 

RECALL

STORE/

 

A9

 

 

STATIC RAM

RECALL

HSB

 

 

 

A11

ROW

 

512 X 512

 

 

 

A13

 

 

 

 

 

A12

 

 

 

 

 

 

A14

 

 

 

 

SOFTWARE

A13 - A0

 

 

 

 

 

DETECT

DQ0

 

 

COLUMN I/O

 

 

 

DQ1

BUFFERS

COLUMN DEC

 

 

 

DQ2

 

 

 

 

 

 

 

 

 

 

 

 

 

DQ3

 

 

 

 

 

 

DQ4

INPUT

 

 

 

 

 

DQ6

A0

A1 A2 A3 A4 A10

 

 

 

DQ5

 

 

 

 

DQ7

 

 

 

 

 

 

 

 

 

 

 

 

OE

 

 

 

 

 

 

CE

 

 

 

 

 

 

WE

Cypress Semiconductor Corporation • 198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Document Number: 001-51038 Rev. **

 

Revised March 02, 2009

[+] Feedback

Page 1 Page 2
Image 1
Page 1 Page 2
Contents Functional Description FeaturesCypress Semiconductor Corporation 198 Champion Court San Jose, CA Document Number 001-51038 Rev Revised March 02Pin Definitions Pin ConfigurationsDevice Operation AutoStore Inhibit modeSram Read Sram WriteHardware Store HSB Operation Hardware Recall Power UpSoftware Store Software RecallData Protection Low Average Active PowerNoise Considerations Hardware ProtectA13-A0 Mode Power Hardware Mode SelectionBest Practices Maximum Ratings DC Electrical CharacteristicsOperating Range Data Retention and EnduranceThermal Resistance CapacitanceAC Test Conditions Switching Waveforms AC Switching CharacteristicsParameter Description 35 ns 45 ns Unit Cypress Alt Min Max Switching Parameter Alt Description STK14C88-5 Unit Min Max AutoStore or Power Up RecallParameter Alt Description 35 ns 45 ns Unit Min Max Software Controlled STORE/RECALL CycleHardware Store High to Inhibit Off 700 Hardware Store CycleHardware Store Pulse Width Hardware Store Low to Store Busy 300Ordering Information Part Numbering Nomenclature STK14C88 5 C 35 MPin 300-Mil Side Braze DIL Package DiagramPad 450-Mil LCC New data sheet Sales, Solutions, and Legal InformationDocument History

STK14C88-5 specifications

The Cypress STK14C88-5 is a high-performance, non-volatile static random-access memory (SRAM) solution that caters to a wide range of applications. This device seamlessly combines the benefits of SRAM technology with non-volatile memory, making it a compelling option for embedded systems requiring fast access speeds alongside persistent data storage.

One of the key features of the STK14C88-5 is its memory density. This chip comes with an 88 Kbit storage capacity, which is ample for various applications, including configuration storage and data logging in industrial systems, telecommunications, and consumer electronics. The memory is organized in a way that supports both byte-wise and word-wise access, ensuring flexibility to accommodate different data structures.

Speed is another attractive characteristic of the STK14C88-5. It operates at access speeds of up to 55 nanoseconds, providing quick read and write capabilities. This rapid performance is crucial for time-sensitive applications, enabling the device to handle real-time data processing effectively. The SRAM also supports a wide operating voltage range from 2.7V to 5.5V, making it versatile for different power supply configurations.

The device utilizes advanced technology to enhance reliability and endurance. The STK14C88-5 features built-in EEPROM technology, which allows it to retain data even when power is lost. This non-volatility is ideal for critical applications where data integrity is paramount.

In terms of interface, the STK14C88-5 provides a simple parallel interface, ensuring compatibility with various microcontrollers and processors. It also has control signals that support straightforward data read and write operations, allowing designers to integrate it easily into their existing architectures.

Moreover, the Cypress STK14C88-5 incorporates low-power consumption features, making it suitable for battery-operated devices. Its efficient power management ensures minimal energy usage without compromising performance, which is crucial in today’s energy-conscious environment.

Overall, the Cypress STK14C88-5 stands out with its combination of non-volatile storage, high-speed access, flexibility of operation, and power efficiency. These features make it an ideal choice for applications that demand reliable memory solutions with fast data processing capabilities, solidifying its position as a valuable component in the semiconductor industry.
Top Page Image Contents