Datasheet > CY14B256K_09

CY14B256K_09

更新时间： 2024-09-15 06:51:31

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		静态存储器时钟
页数	文件大小	规格书
28页	775K
描述
256 Kbit (32K x 8) nvSRAM with Real Time Clock

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中文翻译

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CY14B256K_09 数据手册

CY14B256K

256 Kbit (32K x 8) nvSRAM with Real Time Clock

■ High reliability

❐ Endurance to 200K cycles

❐ Data retention: 20 years at 55°C

Features

■ 25 ns, 35 ns, and 45 ns access times

■ Pin compatible with STK17T88

■ Single 3V operation with tolerance of +20%, -10%

■ Data integrity of Cypress nvSRAM combined with full featured

Real Time Clock

❐ Low power, 350 nA RTC current

■ Commercial and industrial temperature

■ 48-Pin SSOP (ROHS compliant)

❐ Capacitor or battery backup for RTC

Functional Description

■ Watchdog timer

The Cypress CY14B256K combines a 256 Kbit nonvolatile static

RAM with a full-featured real time clock in a monolithic integrated

circuit. The embedded nonvolatile elements incorporate

QuantumTrap technology producing the world’s most reliable

nonvolatile memory. The SRAM is read and written an infinite

number of times, while independent, nonvolatile data resides in

the nonvolatile elements.

■ Clock alarm with programmable interrupts

■ Hands off automatic STORE on power down with only a small

capacitor

■ STORE to QuantumTrap™ initiated by software, device pin, or

on power down

The real time clock function provides an accurate clock with leap

year tracking and a programmable high accuracy oscillator. The

alarm function is programmable for one time alarms or periodic

seconds, minutes, hours, or days. There is also a programmable

watchdog timer for process control.

■ RECALL to SRAM initiated by software or on power up

■ Infinite READ, WRITE, and RECALL cycles

Logic Block Diagram

CAP

QuantumTrap

512 X 512

RTCbat

POWER

A₅

STORE

CONTROL

RTCcap

A₆

A₇

A₈

RECALL

STORE/

RECALL

CONTROL

STATIC RAM

ARRAY

512 X 512

HSB

A₉

A₁₁

A₁₂

A₁₃

A₁₄

SOFTWARE

DETECT

A₁₃

A₀

DQ₀

COLUMN IO

DQ₁

DQ₂

DQ₃

COLUMN DEC

x₁

x₂

RTC

MUX

INT

DQ₄

DQ₅

DQ₆

DQ₇

A₀

A₄

A₁₀

A₁

A₃

A₂

A₁₄

A₀

Cypress Semiconductor Corporation

Document Number: 001-06431 Rev. *H

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised February 24, 2009

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与CY14B256K_09相关器件

型号	品牌	获取价格	描述	数据表
CY14B256KA	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock
CY14B256KA_11	CYPRESS	获取价格	256-Kbit (32 K Ã 8) nvSRAM with Real Time Cl
CY14B256KA_12	CYPRESS	获取价格	256-Kbit (32 K Ã 8) nvSRAM with Real Time Cl
CY14B256KA-SP25XI	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock
CY14B256KA-SP25XI	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
CY14B256KA-SP25XIT	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
CY14B256KA-SP25XIT	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock
CY14B256KA-SP45XI	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock
CY14B256KA-SP45XI	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
CY14B256KA-SP45XIT	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock

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