M41T11

批量生产
Design Win

串行实时时钟(RTC),具有56字节NVRAM

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产品概述

描述

The M41T11 is a low-power serial real-time clock (RTC) with 56 bytes of NVRAM. A built-in 32.768 kHz oscillator (external crystal controlled) and the first 8 bytes of the RAM are used for the clock/calendar function and are configured in binary-coded decimal (BCD) format. Addresses and data are transferred serially via a two-line bidirectional bus. The built-in address register is incremented automatically after each write or read data byte.

The M41T11 clock has a built-in power sense circuit which detects power failures and automatically switches to the battery supply during power failures. The energy needed to sustain the RAM and clock operations can be supplied from a small lithium coin cell.

Typical data retention time is in excess of 5 years with a 50 mA/h, 3 V lithium cell. The M41T11 is supplied in an 8-lead plastic small outline package or 28-lead SNAPHAT® 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. For the 28-lead SOIC, the battery/crystal package (i.e. SNAPHAT) part number is “M4Txx-BR12SH”.

  • 所有功能

    • Counters for seconds, minutes, hours, day, date, month, years and century
    • 32 KHz crystal oscillator integrating load capacitance (12.5 pF) providing exceptional oscillator stability and high crystal series resistance operation
    • Serial interface supports I2C bus (100 kHz protocol)
    • Ultra-low battery supply current of 0.8 μA (typ. at 3 V)
    • 2.0 to 5.5 V clock operating voltage
    • Automatic switchover and deselect circuitry
    • 56 bytes of general purpose RAM
    • Software clock calibration to compensate crystal deviation due to temperature
    • Automatic leap year compensation
    • Operating temperature of –40 to 85°C
    • Packaging includes a 28-lead SOIC and SNAPHAT®top (to be ordered separately; 3.3 V to 5.0 V supply voltage only)
    • RoHS compliant
      • Lead-free second level interconnect

电路原理图

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EDA符号、封装和3D模型

STMicroelectronics - M41T11

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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**
M41T11M6F
批量生产
SO-8 工业 Ecopack3
M41T11MH6F
批量生产
SOH28 工业 Ecopack2 (**)

M41T11M6F

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

M41T11MH6F

Package:

SOH28

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SOH28

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

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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)
NVRAM size (B)
最小值
最大值
M41T11MH6F
Available at distributors

经销商的可用性 M41T11MH6F

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:

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M41T11M6F
Available at distributors

经销商的可用性 M41T11M6F

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

M41T11MH6F 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:

M41T11MH6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

56

代理商名称

代理商库存报告日期:

M41T11M6F 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:

M41T11M6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

56

代理商名称

代理商库存报告日期:

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(*) 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