M48T18

批量生产

5 V, 64 Kbit (8 Kb x 8) TIMEKEEPER® SRAM

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概述
Online design
样片和购买
解决方案
文件
CAD资源
工具与软件
质量与可靠性
开始
Partner products
Sales Briefcase

产品概述

描述

The M48T08/18/08Y TIMEKEEPER®RAM is an 8 K x 8 non-volatile static RAM and real-time clock which is pin and function compatible with the DS1643. The monolithic chip is available in two special packages to provide a highly integrated battery-backed memory and real-time clock solution. The M48T08/18/08Y is a non-volatile pin and function equivalent to any JEDEC standard 8 K 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 CAPHAT™ houses the M48T08/18/08Y 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” or “M4T32-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
    • Typical clock accuracy of ±1 minute a month, at 25 °C
    • Automatic power-fail chip deselect and WRITE protection
    • WRITE protect VPFD= power-fail deselect voltage):
      • M48T08: VCC= 4.75 to 5.5 V; 4.5 V ≤ VPFD≤ 4.75 V
      • M48T18/T08Y: VCC= 4.5 to 5.5 V; 4.2 V ≤ VPFD≤ 4.5 V
    • Software controlled clock calibration for high accuracy applications
    • Self-contained battery and crystal in the CAPHATDIP package
    • Packaging includes a 28-lead SOIC and SNAPHAT® top (to be ordered separately)
    • SOIC package provides direct connection for a snaphat top which contains the battery and crystal
    • Pin and function compatible with DS1643 and JEDEC standard 8 K x 8 SRAMs
    • RoHS compliant
      • Lead-free second level interconnect

电路原理图

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EDA Symbols, Footprints and 3D Models

STMicroelectronics - M48T18

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Symbols

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Footprints

3D model

3D models

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
M48T18-100PC1
批量生产
PDIP 28 .7 工业 Ecopack1 (*)
M48T18-150PC1
批量生产
PDIP 28 .7 工业 Ecopack2 (**)

M48T18-100PC1

Package:

PDIP 28 .7

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

PDIP 28 .7

Grade

Industrial

RoHS Compliance Grade

Ecopack1 (*)

M48T18-150PC1

Package:

PDIP 28 .7

Material Declaration**:

PDF XML

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

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
M48T18-100PC1 Available at 6 distributors

经销商的可用性M48T18-100PC1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 806 1 马上订购
RS COMPONENTS EUROPE 436 1 马上订购
AVNET AMERICA 189 0 马上订购
Newark Element14 AMERICA 53 0 马上订购
MOUSER WORLDWIDE 99 1 马上订购
Farnell Element14 EUROPE 100 1 马上订购

代理商库存报告日期: 2021-05-06

代理商名称

DIGIKEY

库存

806

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

436

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

189

Min.Order

0

地区

AMERICA 马上订购

Newark Element14

库存

53

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

99

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

100

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2021-05-06

Buy Direct
批量生产
EAR99 NEC Tube PDIP 28 .7 0 70 MALAYSIA 14.109 / 1k
M48T18-150PC1 Available at 6 distributors

经销商的可用性M48T18-150PC1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 310 1 马上订购
RS COMPONENTS EUROPE 321 1 马上订购
FUTURE WORLDWIDE 408 12 马上订购
Newark Element14 AMERICA 6 0 马上订购
MOUSER WORLDWIDE 317 1 马上订购
Farnell Element14 EUROPE 274 1 马上订购

代理商库存报告日期: 2021-05-06

代理商名称

DIGIKEY

库存

310

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

321

Min.Order

1

地区

EUROPE 马上订购

FUTURE

库存

408

Min.Order

12

地区

WORLDWIDE 马上订购

Newark Element14

库存

6

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

317

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

274

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2021-05-06

Buy Direct
批量生产
EAR99 NEC Tube PDIP 28 .7 0 70 MALAYSIA

M48T18-100PC1

供货状态

批量生产

ECCN (US)

EAR99

经销商的可用性M48T18-100PC1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 806 1 马上订购
RS COMPONENTS EUROPE 436 1 马上订购
AVNET AMERICA 189 0 马上订购
Newark Element14 AMERICA 53 0 马上订购
MOUSER WORLDWIDE 99 1 马上订购
Farnell Element14 EUROPE 100 1 马上订购

代理商库存报告日期: 2021-05-06

代理商名称

DIGIKEY

库存

806

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

436

Min.Order

1

地区

EUROPE 马上订购

AVNET

库存

189

Min.Order

0

地区

AMERICA 马上订购

Newark Element14

库存

53

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

99

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

100

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2021-05-06

ECCN (EU)

NEC

包装类型

Tube

封装

PDIP 28 .7

Operating Temperature (°C)

(最小值)

0

(最大值)

70

Country of Origin

MALAYSIA

M48T18-150PC1

供货状态

批量生产

ECCN (US)

EAR99

经销商的可用性M48T18-150PC1

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 310 1 马上订购
RS COMPONENTS EUROPE 321 1 马上订购
FUTURE WORLDWIDE 408 12 马上订购
Newark Element14 AMERICA 6 0 马上订购
MOUSER WORLDWIDE 317 1 马上订购
Farnell Element14 EUROPE 274 1 马上订购

代理商库存报告日期: 2021-05-06

代理商名称

DIGIKEY

库存

310

Min.Order

1

地区

WORLDWIDE 马上订购

RS COMPONENTS

库存

321

Min.Order

1

地区

EUROPE 马上订购

FUTURE

库存

408

Min.Order

12

地区

WORLDWIDE 马上订购

Newark Element14

库存

6

Min.Order

0

地区

AMERICA 马上订购

MOUSER

库存

317

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

274

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2021-05-06

ECCN (EU)

NEC

包装类型

Tube

封装

PDIP 28 .7

Operating Temperature (°C)

(最小值)

0

(最大值)

70

Country of Origin

MALAYSIA

(*) 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