M48T35

批量生产
Design Win

5 V, 256 Kbit (32 Kb x 8) TIMEKEEPER® SRAM

下载数据手册 Order Direct

产品概述

描述

The M48T35/Y TIMEKEEPER®RAM is a 32 Kb x 8 non-volatile static RAM and real-time clock. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory and real-time clock solution.

The M48T35/Y is a non-volatile pin and function equivalent to any JEDEC standard 32 Kb x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets, providing the non-volatility of PROMs without any requirement for special WRITE timing or limitations on the number of WRITEs that can be performed.

The 28-pin, 600 mil DIP CAPHAThouses the M48T35/Y silicon with a quartz crystal and a long life lithium button cell in a single package.

The 28-pin, 330 mil SOIC 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 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/crystal packages are shipped separately in plastic anti-static tubes or in tape & reel form.

For the 28-lead SOIC, the battery/crystal package (e.g., SNAPHAT) part number is “M4T28-BR12SH”.

  • 所有功能

    • Integrated, ultra low power SRAM, real-time clock, power-fail control circuit and battery
    • BYTEWIDERAM-like clock access
    • BCD coded year, month, day, date, hours, minutes, and seconds
    • Frequency test output for real-time clock
    • Automatic power-fail chip deselect and WRITE protection
    • WRITE protect voltages VPFD= power-fail deselect voltage):
      • M48T35: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
      • M48T35Y: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V
    • Self-contained battery and crystal in the CAPHATDIP package
    • SOIC package provides direct connection for a SNAPHAT® housing containing the battery and crystal
    • SNAPHAT® housing (battery and crystal) is replaceable
    • Pin and function compatible with JEDEC standard 32 Kb x 8 SRAMs
    • RoHS compliant
      • Lead-free second level interconnect

电路原理图

EDA符号、封装和3D模型

STMicroelectronics - M48T35

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Please select one model supplier :

Symbols

符号

Footprints

封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 材料声明**
M48T35-70PC1
批量生产
PDIP 28 .7 工业 Ecopack2

M48T35-70PC1

Package:

PDIP 28 .7

Material Declaration**:

Marketing Status

批量生产

Package

PDIP 28 .7

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

Swipe or click the button to explore more details Don't show this again
产品型号
供货状态
Budgetary Price (US$)*/Qty
从ST订购
Order from distributors
包装类型
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
温度(ºC)
最小值
最大值
M48T35-70PC1
Available at distributors

经销商的可用性 M48T35-70PC1

代理商名称
地区 库存 最小订购量 第三方链接

代理商库存报告日期:

无法联系到经销商,请联系我们的销售办事处

M48T35-70PC1 批量生产

Budgetary Price (US$)*/Qty:
-
包:
包装类型:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

产品型号:

M48T35-70PC1

Operating Temperature (°C)

Min:

Max:

代理商名称

代理商库存报告日期:

Swipe or click the button to explore more details Don't show this again

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商