5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER® SRAM

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  • The M48T37Y/V TIMEKEEPER®RAM is a 32 Kb x 8 non-volatile static RAM and real-time clock. The monolithic chip is available in a special package which provides a highly integrated battery-backed memory and real-time clock solution.

    The 44-lead, 330 mil SOIC package provides sockets with gold-plated contacts at both ends for direct connection to a separate SNAPHAT housing containing the battery and crystal. The unique design allows the SNAPHAT®battery/crystal package to be mounted on top of the SOIC package after the completion of the surface mount process.
    Insertion of the SNAPHAT housing after reflow prevents potential battery and crystal damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is keyed to prevent reverse insertion.
    The SOIC and battery packages are shipped separately in plastic anti-static tubes or in tape & reel form. For the 44-lead SOIC, the battery/crystal package (e.g., SNAPHAT) part number is “M4T28-BR12SH” or “M4T32-BR12SH”.

    主要特性

    • Integrated ultra low power SRAM, real-time clock, power-fail control circuit, and battery
    • Frequency test output for real-time clock software calibration
    • Automatic power-fail chip deselect and WRITE protection
    • Watchdog timer
    • WRITE protect voltage (VPFD= Power-fail deselect voltage):
      • M48T37Y: VCC= 4.5 to 5.5 V 4.2 V ≤ VPFD≤ 4.5 V
      • M48T37V: VCC= 3.0 to 3.6 V 2.7 V ≤ VPFD≤ 3.0 V
    • Packaging includes a 44-lead SOIC and SNAPHAT®top (to be ordered separately)
    • SOIC package provides direct connection for a SNAPHAT®top which contains the battery and crystal
    • Microprocessor power-on reset (valid even during battery backup mode)
    • Programmable alarm output active in the battery backup mode
    • Battery low flag
    • RoHS compliant
      • Lead-free second level interconnect

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样片和购买

产品型号
封装
包装类型
供货状态
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
M48T37V-10MH1F SO-44 Tape And Reel
Active
10000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofM48T37V-10MH1F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1289 1 Order Now
MOUSER WORLDWIDE 783 1 Order Now
Farnell Element14 EUROPE 936 1 Order Now

代理商库存报告日期: 2019-09-13

代理商名称

DIGIKEY

库存

1289

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

783

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

936

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-13

立即购买

M48T37V-10MH1F

封装

SO-44

包装类型

Tape And Reel

Distributor availability ofM48T37V-10MH1F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1289 1 Order Now
MOUSER WORLDWIDE 783 1 Order Now
Farnell Element14 EUROPE 936 1 Order Now

代理商库存报告日期: 2019-09-13

代理商名称

DIGIKEY

库存

1289

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

783

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

936

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-09-13

供货状态

Active

数量

10000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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技术文档

    • 描述 版本 文档大小 操作
      DS1898
      5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER® SRAM
      9.1
      508.02 KB
      PDF
      DS1898

      5.0 or 3.3 V, 256 Kbit (32 Kbit x 8) TIMEKEEPER® SRAM

    • 描述 版本 文档大小 操作
      AN1011
      ST NVRAM 和实时时钟(RTC)产品中使用的电池技术
      4.0
      416.58 KB
      PDF
      AN934
      How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products
      4.1
      123.42 KB
      PDF
      AN1216
      Implementing a periodic alarm with TIMEKEEPER® and serial real-time clocks (RTCs)
      2.0
      192.89 KB
      PDF
      AN923
      Managing century information using serial real-time clocks and TIMEKEEPER® NVRAMs
      4.0
      142.23 KB
      PDF
      AN1009
      Negative undershoot NVRAM data corruption
      2.0
      82.05 KB
      PDF
      AN1012
      预测NVRAM 和串行RTC 的电池寿命和数据保存期限
      1.0
      813.03 KB
      PDF
      AN925
      Time update in ST's TIMEKEEPER® devices
      2.0
      119.68 KB
      PDF
      AN968
      VMEbus TIMEKEEPER® requirements
      2.0
      94.96 KB
      PDF
      AN1011

      ST NVRAM 和实时时钟(RTC)产品中使用的电池技术

      AN934

      How to use the digital calibration feature in TIMEKEEPER® and serial real-time clock (RTC) products

      AN1216

      Implementing a periodic alarm with TIMEKEEPER® and serial real-time clocks (RTCs)

      AN923

      Managing century information using serial real-time clocks and TIMEKEEPER® NVRAMs

      AN1009

      Negative undershoot NVRAM data corruption

      AN1012

      预测NVRAM 和串行RTC 的电池寿命和数据保存期限

      AN925

      Time update in ST's TIMEKEEPER® devices

      AN968

      VMEbus TIMEKEEPER® requirements

硬件型号、CAD库及SVD

    • 描述 版本 文档大小 操作
      Ibis model 1.0
      15 KB
      ZIP

      Ibis model

质量与可靠性

    • 描述 版本 文档大小 操作
      Products Underwriter Laboratories (UL) Information 2.1
      543.21 KB
      PDF

      Products Underwriter Laboratories (UL) Information

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
M48T37V-10MH1F
Active
SO-44 工业 Ecopack1

M48T37V-10MH1F

Package:

SO-44

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-44

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.