Datasheet > 存储 > SRAM> CY14B256P-SFXIT

CY14B256P-SFXIT

更新时间： 2024-02-06 20:16:17

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
36页	1891K
描述
256-Kbit (32 K × 8) Serial (SPI) with nvSRAM Real Time Clock

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技术参数
数据手册

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CY14B256P-SFXIT 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	SOP, SOP16,.4
针数：	16	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.32.00.41
风险等级：	5.71	JESD-30 代码：	R-PDSO-G16
长度：	10.28 mm	内存密度：	262144 bit
内存集成电路类型：	NON-VOLATILE SRAM	内存宽度：	8
功能数量：	1	端子数量：	16
字数：	32768 words	字数代码：	32000
工作模式：	SYNCHRONOUS	最高工作温度：	85 °C
最低工作温度：	-40 °C	组织：	32KX8
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP16,.4	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	并行/串行：	SERIAL
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3/3.3 V
认证状态：	Not Qualified	座面最大高度：	2.667 mm
最大待机电流：	0.005 A	子类别：	SRAMs
最大压摆率：	0.01 mA	最大供电电压 (Vsup)：	3.6 V
最小供电电压 (Vsup)：	2.7 V	标称供电电压 (Vsup)：	3 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7.49 mm
Base Number Matches：	1

CY14B256P-SFXIT 数据手册

CY14B256P

256-Kbit (32 K × 8) Serial (SPI) nvSRAM

with Real Time Clock

256-Kbit (32

K × 8) Serial (SPI) nvSRAM with Real Time Clock

■ Write protection

❐ Hardware protection using Write Protect (WP) pin

Features

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

❐ Internally organized as 32 K × 8

❐ Software protection using Write Disable instruction

❐ Software block protection for 1/4, 1/2, or entire array

❐ STORE to QuantumTrap nonvolatile elements initiated

automatically on power-down (AutoStore) or by user using

HSB pin (Hardware STORE) or SPI instruction (Software

STORE)

■ Low power consumption

❐ Single 3 V +20%, –10% operation

❐ Average active current of 10 mA at 40 MHz operation

■ Industry standard configurations

❐ Industrial temperature

❐ RECALL to SRAM initiated on power-up (Power-Up

RECALL) or by SPI instruction (Software RECALL)

❐ Automatic STORE on power-down with a small capacitor

❐ 16-pin small outline integrated circuit (SOIC) package

❐ Restriction of hazardous substances (RoHS) compliant

■ High reliability

Overview

❐ Infinite read, write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ Data retention: 20 years

The Cypress CY14B256P combines a 256-Kbit nvSRAM^[1]with

a full-featured real time clock in a monolithic integrated circuit

with serial SPI interface. The memory is organized as 32 K words

of 8 bits each. The embedded nonvolatile elements incorporate

the QuantumTrap technology, creating the world’s most reliable

nonvolatile memory. The SRAM provides infinite read and write

cycles, while the QuantumTrap cells provide highly reliable

nonvolatile storage of data. Data transfers from SRAM to the

nonvolatile elements (STORE operation) takes place

automatically at power-down. On power-up, data is restored to

the SRAM from the nonvolatile memory (RECALL operation).

The STORE and RECALL operations can also be initiated by the

user through SPI instruction.

■ Real time clock (RTC)

❐ Full-featured RTC

❐ Watchdog timer

❐ Clock alarm with programmable interrupts

❐ Capacitor or battery backup for RTC

❐ Backup current of 0.35 µA (typical)

■ High-speed serial peripheral interface (SPI)

❐ 40-MHz clock rate – SRAM memory access

❐ 25-MHz clock rate – RTC memory access

❐ Supports SPI mode 0 (0,0) and mode 3 (1,1)

Logic Block Diagram

V_CC

V_CAP

QuantumTrap

32 K X 8

Power Control

SCK

Instruction decode

Write protect

Control logic

STORE/RECALL

Control

STORE

HSB

SRAM Array

HOLD

RECALL

32 K X 8

Instruction

D0-D7

A0-A14

out

Address

Decoder

RTC

INT

MUX

Data I/O register

Status Register

Note

1. This device will be referred to as nvSRAM throughout the document.

Cypress Semiconductor Corporation

Document Number: 001-53881 Rev. *E

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised January 19, 2011

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与CY14B256P-SFXIT相关器件

型号	品牌	获取价格	描述	数据表
CY14B256Q	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q1_13	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (SPI) nvSRAM
CY14B256Q1A-SXI	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1A-SXIT	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q1-LHXI	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q1-LHXIT	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q2	CYPRESS	获取价格	256-Kbit (32 K × 8) Serial (SPI) nvSRAM
CY14B256Q2A-SXI	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14B256Q2A-SXIT	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles

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