Datasheet > CY14MB256J

CY14MB256J

更新时间： 2024-11-30 12:52:39

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		静态存储器
页数	文件大小	规格书
30页	1168K
描述
256-Kbit (32 K x 8) Serial (I2C) nvSRAM

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CY14MB256J 数据手册

CY14MC256J

CY14MB256J

CY14ME256J

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

256-Kbit (32

K × 8) Serial (I²C) nvSRAM

■ Industry standard configurations

❐ Operating voltages:

Features

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

❐ Internally organized as 32 K × 8

• CY14MC256J: V_CC= 2.4 V to 2.6 V

• CY14MB256J: V_CC= 2.7 V to 3.6 V

❐ STORE to QuantumTrap nonvolatile elements initiated

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

command (SoftwareSTORE) orHSBpin(HardwareSTORE)

• CY14ME256J: V_CC= 4.5 V to 5.5 V

❐ Industrial temperature

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

❐ Restriction of hazardous substances (RoHS) compliant

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

RECALL) or by I²C command (Software RECALL)

Overview

❐ Automatic STORE on power-down with a small capacitor

(except for CY14MX256J1)

The

Cypress

CY14MC256J/CY14MB256J/CY14ME256J

combines a 256-Kbit nvSRAM^[2]with a nonvolatile element in

each memory cell. 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 (except for CY14MX256J1). 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.

■ High reliability

❐ Infinite read, write, and RECALL cycles

❐ 1 million STORE cycles to QuantumTrap

❐ Data retention: 20 years at 85 C

■ High speed I²C interface^[1]

❐ Industry standard 100 kHz and 400 kHz speed

❐ Fast-mode Plus: 1 MHz speed

❐ High speed: 3.4 MHz

❐ Zero cycle delay reads and writes

■ Write protection

❐ Hardware protection using Write Protect (WP) pin

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

■ I²C access to special functions

❐ Nonvolatile STORE/RECALL

❐ 8 byte serial number

❐ Manufacturer ID and Product ID

❐ Sleep mode

Configuration

Feature

AutoStore

CY14MX256J1 CY14MX256J2 CY14MX256J3

Yes

Software

STORE

Yes

Hardware

STORE

Yes

■ Low power consumption

❐ Average active current of 1 mA at 3.4-MHz operation

❐ Average standby mode current of 150 µA

❐ Sleep mode current of 8 µA

Slave Address

pins

A2, A1, A0

A2, A1

A2, A1, A0

Logic Block Diagram

Serial Number

8 x 8

V_CCV_CAP

Manufacturer ID /

Product ID

Power Control

Memory Control Register

Command Register

Block

QuantumTrap

32 K x 8

Sleep

STORE

SRAM

32 K x 8

Control Registers Slave

Memory Slave

SDA

SCL

A2, A1, A0

I²C Control Logic

Slave Address

Decoder

Memory

Address and Data

Control

RECALL

Notes

1. The I C nvSRAM is a single solution which is usable for all four speed modes of operation. As a result, some I/O parameters are slightly different than those on chips

which support only one mode of operation. Refer to AN87209 for more details.

2. Serial (I C) nvSRAM is referred to as nvSRAM throughout the datasheet.

Cypress Semiconductor Corporation

Document Number: 001-65233 Rev. *G

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised April 29, 2013

12 3 4 5 6 7...30

中文翻译

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与CY14MB256J相关器件

型号	品牌	获取价格	描述	数据表
CY14MB256J1-SXI	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM
CY14MB256J1-SXIT	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM
CY14MB256J2-SXI	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM
CY14MB256J2-SXIT	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM
CY14MC256J	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (I2C) nvSRAM
CY14MC256J_12	CYPRESS	获取价格	256-Kbit (32 K Ã 8) Serial (I2C) nvSRAM
CY14MC256J_13	CYPRESS	获取价格	256-Kbit (32 K x 8) Serial (I2C) nvSRAM
CY14ME064J	CYPRESS	获取价格	64-Kbit (8 K x 8) Serial (I2C) nvSRAM Nonvolatile STORE/RECALL
CY14ME064J1A	CYPRESS	获取价格	64-Kbit (8 K x 8) Serial (I2C) nvSRAM
CY14ME064J1A-SXI	CYPRESS	获取价格	64-Kbit (8 K Ã 8) Serial (I2C) nvSRAM

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