Datasheet > 存储 > SRAM> CY14B256K

CY14B256K

更新时间： 2024-11-05 04:13:19

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
23页	1346K
描述
256-Kbit (32K x 8) nvSRAM with Real-Time-Clock

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中文翻译

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数据手册

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CY14B256K 数据手册

PRELIMINARY

CY14B256K

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

Features

Functional Description

• Data integrity of Cypress nvSRAM combined with full

featured real time clock

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 can be read and

written an infinite number of times, while independent,

nonvolatile data resides in the nonvolatile elements.

— Low power, 300 nA Max, RTC current

— Capacitor or battery backup for RTC

• Watchdog timer

• Clock alarm with programmable interrupts

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

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.

• “Hands-off” automatic STORE on power down with only a

small capacitor

• STOREtoQuantumTrap™initiatedbysoftware, devicepin,

or on power down

• RECALL to SRAM initiated by software or on power up

• Infinite READ, WRITE, and RECALL cycles

• High reliability

— Endurance to 200K cycles

— Data retention: 20 years @ 55°C

• 10 mA typical I_CCat 200 ns cycle time

• Single 3V operation with tolerance of +15%, -10%

• Commercial and industrial temperature

• SSOP Package (ROHS compliant)

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. *E

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised January 29, 2007

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中文翻译

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与CY14B256K相关器件

型号	品牌	获取价格	描述	数据表
CY14B256K_09	CYPRESS	获取价格	256 Kbit (32K x 8) nvSRAM with Real Time Clock
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)

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