Datasheet > CY14C256I

CY14C256I

更新时间： 2024-11-06 09:41:07

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
41页	2316K
描述
256-Kbit (32 K x 8) Serial (I2C) nvSRAM with Real Time Clock Full-featured RTC

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

CY14C256I 数据手册

CY14C256I

CY14B256I, CY14E256I

256-Kbit (32 K × 8) Serial (I²C) nvSRAM

with Real Time Clock

256-Kbit (32

K × 8) Serial (I²C) nvSRAM with Real Time Clock

■ I²C access to special functions

❐ Nonvolatile STORE/RECALL

❐ 8-byte serial number

❐ Manufacturer ID and Product ID

❐ Sleep mode

Features

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

❐ Internally organized as 32 K × 8

❐ STORE to QuantumTrap nonvolatile elements initiated

automatically on power-down (AutoStore) or by using I²C

command (Software STORE) orHSB pin (Hardware STORE)

■ Low power consumption

❐ Average active current of 1 mA at 3.4 MHz operation

❐ Average standby mode current of 250 µA

❐ Sleep mode current of 8 µA

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

RECALL) or by I²C command (Software RECALL)

❐ Automatic STORE on power-down with a small capacitor

■ High reliability

■ Industry standard configurations

❐ Operating voltages:

❐ Infinite read, write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ Data retention: 20 years at 85 °C

■ Real Time Clock (RTC)

❐ Full-featured RTC

❐ Watchdog timer

❐ Clock alarm with programmable interrupts

❐ Backup power fail indication

❐ Square wave output with programmable frequency (1 Hz,

512 Hz, 4096 Hz, 32.768 kHz)

❐ Capacitor or battery backup for RTC

❐ Backup current of 0.45 µA (typical)

■ High-speed I²C interface

❐ Industry standard 100 kHz and 400 kHz speed

❐ Fast mode Plus 1 MHz speed

❐ High speed: 3.4 MHz

• CY14C256I : V_CC= 2.4 V to 2.6 V

• CY14B256I : V_CC= 2.7 V to 3.6 V

• CY14E256I : V_CC= 4.5 V to 5.5 V

❐ Industrial temperature

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

❐ Restriction of hazardous substances (RoHS) compliant

Overview

The Cypress CY14C256I/CY14B256I/CY14E256I combines a

256-Kbit nvSRAM^[1]with a full-featured RTC in a monolithic

integrated circuit with serial I²C interface. The memory is

organized as 64 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 I²C

commands.

❐ Zero cycle delay reads and writes

■ Write protection

❐ Hardware protection using Write Protect (WP) pin

❐ Software block protection for one-quarter, one-half, or entire

array

Logic Block Diagram

Serial Number

8 x 8

V_CCV_CAP

^RTCcapV_RTCbat

Manufacture ID/

Product ID

Power Control

Block

Memory Control Register

Command Register

QuantrumTrap

32 K x 8

Sleep

STORE

SRAM

32 K x 8

Control Registers Slave

SDA

SCL

A2, A1, A0

I²C Control Logic

Slave Address

Decoder

Memory

Address and Data

Control

RECALL

Memory Slave

RTC Slave

X_in

RTC Control Logic

INT/SQW

X_out

Registers

Counters

Note

1. Serial (I C) nvSRAM will be referred to as nvSRAM throughout the datasheet.

Cypress Semiconductor Corporation

Document #: 001-65230 Rev. *B

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised May 5, 2011

[+] Feedback

12 3 4 5 6 7...41

中文翻译

下载PDF

与CY14C256I相关器件

型号	品牌	获取价格	描述	数据表
CY14C256I_12	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM with
CY14C256I_13	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (I2C) nvSRAM with Real Time Clock
CY14C256PA	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM with Real Time Clock Infinite read, write, and RECALL cycle
CY14C256PA_12	CYPRESS	获取价格	256-Kbit (32 K Ã 8) SPI nvSRAM with Real Tim
CY14C256PA_13	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM with Real Time Clock
CY14C256Q	CYPRESS	获取价格	256-Kbit (32 K x 8) SPI nvSRAM Infinite read, write, and RECALL cycles
CY14C256Q_12	CYPRESS	获取价格	256-Kbit (32 K Ã 8) SPI nvSRAM
CY14C512I	CYPRESS	获取价格	512-Kbit (64 K x 8) Serial (I2C) nvSRAM with Real Time Clock
CY14C512I_12	CYPRESS	获取价格	512-Kbit (64 K Ã 8) Serial (I2C) nvSRAM with
CY14C512I_13	CYPRESS	获取价格	512-Kbit (64 K x 8) Serial (I2C) nvSRAM with Real Time Clock

与CY14C256I相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

14
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

12
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

36
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

33

产品中心

服务支持

精选活动

关于我们

帮助中心

CY14C256I

CY14C256I 数据手册

与CY14C256I相关器件

与CY14C256I相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

CY14C256I

CY14C256I 数据手册

与CY14C256I相关器件

与CY14C256I相关文章

您还可以找

您在本页遇到什么问题？