WMSIC Electronic Components

FMD FT24C256A-ESR-B FT24C256A

ModelFT24C256A-ESR-B
PackageSOP-8
BrandFMD
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
FMD FT24C256A-ESR-B
Type
FMD
Minimum package
10000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
FMD
Electronic Component
FT24C256A-ESR-B
Electronic Component
1
Package
SOP-8
Electronic Component
EEPROM
Electronic Component
0.138g
Electronic Component
1
Electronic Component
BM0265006221
Electronic Component
256Kbit
Operating Temperature
40℃~+85℃
Operating Voltage
1.8V~5.5V
Interface Type
I2C
Electronic Component
100
Clock Frequency(fc)
1MHz
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

FT24C256A-ESR-B 产品概述

FT24C256A-ESR-B 是辉芒微(FMD)推出的一款高可靠性、低功耗的 256Kbit 串行 EEPROM,采用标准 I2C 接口,兼容常见 24C 系列器件的引脚和指令集,封装为 SOP-8,适合工业与消费类场景对非易失性参数、配置和日志存储的需求。该器件在宽电压、工业温度范围内工作,并具备硬件写保护与噪声抑制等实用特性,能够在对可靠性与功耗有较高要求的系统中长期稳定工作。

一、主要特性

  • 存储容量:256 Kbit(32 KByte)
  • 接口类型:I2C(兼容 2‑wire 标准总线)
  • 工作电压:1.8 V ~ 5.5 V(宽电压设计,适配单电源多系统)
  • 时钟频率:
    • 1 MHz(在 VCC = 2.5 V ~ 5.5 V 条件下)
    • 400 kHz(在 VCC = 1.8 V 条件下)
  • 页写模式:64 字节页写(Page Write)
  • 自定时写周期:最大 Tw = 5 ms(器件内部完成写入,主机可轮询 ACK)
  • 待机电流:典型值极低,最大待机电流 < 1 μA(低功耗待机)
  • 写周期寿命:1,000,000 次
  • 数据保留:≥ 100 年
  • 功能特性:硬件写保护(WP 引脚),噪声抑制功能(提高总线可靠性)
  • 工作温度:-40 ℃ ~ +85 ℃(工业等级)
  • 封装:SOP-8(标准工业封装)

二、引脚与封装(参考,与常见24C系列兼容)

  • 引脚排列(SOP-8,顶视):
    1. A0 — 器件地址位(可接地/接高以扩展地址)
    2. A1 — 器件地址位
    3. A2 — 器件地址位
    4. GND — 地
    5. SDA — 串行数据线(I2C 数据)
    6. SCL — 串行时钟线(I2C 时钟)
    7. WP — 写保护(硬件写保护,置高禁止写操作)
    8. VCC — 电源正极

注:具体引脚功能请以产品规格书引脚定义为准。A0–A2 用于硬件地址配置或固定接地以确定设备地址;WP 为硬件写保护输入,通常高电平时禁写,低电平允许写入。

三、可靠性与数据保持

FT24C256A-ESR-B 针对长期数据完整性和工业环境设计:

  • 写入寿命高达 1,000,000 次,适合频繁写入场景(配置表、统计计数器等)。
  • 数据保留时间 ≥ 100 年,适合需要长期保存校准参数、序列号、固件副本等重要数据的应用。
  • 宽温度范围与噪声抑制设计,保证在恶劣环境中仍能稳定读写。

四、典型应用场景

  • 工业控制器的配置与校准数据存储
  • 数据采集设备和传感器节点的参数、日志保存
  • 汽车电子(非安全关键)与工业仪表的非易失性存储
  • 消费电子中的用户设置、序列号与产品信息
  • 智能家居、物联网设备的固件参数备份

五、设计建议与注意事项

  • 电源去耦:建议在 VCC 与 GND 之间放置 0.1 μF 陶瓷旁路电容,靠近器件电源引脚布置,以抑制电源噪声和瞬态干扰。
  • I2C 上拉:SDA 与 SCL 需要上拉电阻,典型值 2.2 kΩ 至 10 kΩ,具体取值根据总线速率和总线负载(分布电容)调整。高速(1 MHz)下建议使用较低阻值。
  • 写保护(WP):在需要物理防写的系统中,将 WP 置为高电平可防止所有写操作;若需要写入功能,WP 应拉低或接地。
  • 写入轮询:在自定时写周期期间,器件不会响应新的写命令。主机可通过发送器件地址并检测 ACK/NACK 来轮询写完成状态。
  • 地址引脚:若系统中存在多个相同器件,使用 A0–A2 引脚设置不同硬件地址;若不使用地址扩展,建议将其拉至固定电平以避免浮空带来的不确定性。
  • 电平兼容性:器件在 1.8 V 至 5.5 V 范围内工作,便于与不同逻辑电平的主控 MCU 互连;仍建议在接口侧保证电平匹配与适当的上拉电阻选择。

FT24C256A-ESR-B 以其大容量、低功耗、宽电压与工业等级可靠性,适合需要长期、可靠非易失性存储的各类嵌入式系统。如需更详细的时序图、完整电气规范、应用电路与封装尺寸,请参阅辉芒微(FMD)官方规格书或联系技术支持获取样片与评估资料。

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