Datasheet > CY14B256KA_11

CY14B256KA_11

更新时间： 2024-09-15 12:50:07

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
27页	913K
描述
256-Kbit (32 K Ã 8) nvSRAM with Real Time Clock

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CY14B256KA_11 数据手册

CY14B256KA

256-Kbit (32 K × 8) nvSRAM with

Real Time Clock

256 Kbit (32K

x 8) nvSRAM with Real Time Clock

■ Industry standard configurations

❐ Single 3 V +20%, -10% operation

❐ Industrial temperature

❐ 48-pin shrink small-outline package (SSOP)

❐ Pb-free and Restriction of hazardous substances (RoHS)

compliant

Features

■ 256-Kbit nonvolatile static random access memory (nvSRAM)

❐ 25 ns and 45 ns access times

❐ Internally organized as 32 K × 8 (CY14B256KA)

❐ HandsoffautomaticSTOREonpower-downwithonlyasmall

capacitor

Functional Description

❐ STORE to QuantumTrap nonvolatile elements is initiated by

software, hardware, or AutoStore on power-down

The Cypress CY14B256KA combines a 256-Kbit nonvolatile

static RAM with a full featured real time clock in a monolithic

integrated circuit. The embedded nonvolatile elements incor-

porate 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.

❐ RECALL to SRAM initiated on power-up or by software

■ High reliability

❐ Infinite Read, Write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ 20 year data retention

■ Real time clock (RTC)

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 periodic minutes, hours,

days, or months alarms. There is also a programmable watchdog

timer for process control.

❐ Full-featured real time clock

❐ Watchdog timer

❐ Clock alarm with programmable interrupts

❐ Capacitor or battery backup for RTC

❐ Backup current of 0.35 uA (Typ)

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

A₁₄

A₀

DQ₀

COLUMN IO

DQ₁

DQ₂

DQ₃

COLUMN DEC

x_out

x_in

RTC

MUX

INT

DQ₄

DQ₅

DQ₆

DQ₇

A₀

A₄

A₁₀

A₁

A₃

A₂

A₁₄

A₀

Cypress Semiconductor Corporation

Document #: 001-55720 Rev. *C

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised January 17, 2011

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与CY14B256KA_11相关器件

型号	品牌	获取价格	描述	数据表
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
CY14B256KA-SP45XIT	INFINEON	获取价格	nvSRAM (non-volatile SRAM)
CY14B256K-SP25CT	CYPRESS	获取价格	Non-Volatile SRAM, 32KX8, 25ns, CMOS, PDSO48, ROHS COMPLIANT, SSOP-48

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