M41T93

批量生产
Design Win

串行SPI总线实时时钟(RTC),支持电池切换

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产品概述

描述

The M41T93 is a low-power serial SPI bus real-time clock (RTC) with a built-in 32.768 kHz oscillator (external crystal-controlled for the QFN16 package, and embedded crystal for the SOX18 package). Eight bytes of the register map are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 17 bytes of the register map provide status/control of the two alarms, watchdog, 8-bit counter, and square wave functions. An additional seven bytes are made available as user SRAM.

Addresses and data are transferred serially via a serial SPI bus-compatible interface. The built-in address register is incremented automatically after each WRITE or READ data byte. The M41T93 has a built-in power sense circuit which detects power failures and automatically switches to the battery supply when a power failure occurs. The energy needed to sustain the clock operations can be supplied by a small lithium button battery when a power failure occurs.

Functions available to the user include a non-volatile, time-of-day clock/calendar, alarm interrupt, watchdog timer, programmable 8-bit counter, and square wave outputs. The eight clock address locations contain the century, year, month, date, day, hour, minute, second, and tenths/hundredths of a second in 24-hour BCD format. Corrections for 28, 29 (leap year), 30, and 31 day months are made automatically. The M41T93 is supplied in either a QFN16 or an SOX18, 300 mil SOIC which includes an embedded 32 KHz crystal. The SOX18 package requires only a user-supplied battery to provide non-volatile operation.

  • 所有功能

    • Ultra-low battery supply current of 365 nA
    • Factory calibrated accuracy ±5 ppm typical after 2 reflows (SOX18) (much better accuracies are achievable using built-in programmable analog and digital calibration circuits)
    • 2.0 V to 5.5 V clock operating voltage
    • Counters for tenths/hundredths of seconds, seconds, minutes, hours, day, date, month, year, and century
    • Automatic switchover and reset output circuitry (fixed reference): M41T93S: VCC= 3.0 V to 5.5 V; M41T93R: VCC= 2.7 V to 5.5 V; M41T93Z: VCC= 2.38 V to 5.50 V
    • Compatible with SPI bus serial interface (supports SPI mode 0 [CPOL = 0, CPHA = 0])
    • Programmable alarm with interrupt function (valid even during battery backup mode)
    • Optional 2ndprogrammable alarm available
    • Square wave output (defaults to 32 KHz on power-up)
    • RESET (RST) output
    • Watchdog timer
    • Programmable 8-bit counter/timer
    • 7 bytes of battery-backed user SRAM
    • Battery low flag
    • Low operating current of 80 μA
    • Oscillator stop detection
    • Battery or supercapacitor backup
    • Operating temperature of –40 °C to +85 °C
    • Package options include a 16-lead QFN and an 18-lead embedded crystal SOIC

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EDA符号、封装和3D模型

STMicroelectronics - M41T93

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封装

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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**
M41T93RMY6F
批量生产
SO18 with embedded crystal 工业 Ecopack1
M41T93RQA6F
批量生产
VFQFPN 16 4x4x1.0 工业 Ecopack2
M41T93SMY6F
批量生产
SO18 with embedded crystal 工业 Ecopack1
M41T93SQA6F
批量生产
VFQFPN 16 4x4x1.0 工业 Ecopack2
M41T93ZMY6F
批量生产
SO18 with embedded crystal 工业 Ecopack1
M41T93ZQA6F
批量生产
VFQFPN 16 4x4x1.0 工业 Ecopack2

M41T93RMY6F

Package:

SO18 with embedded crystal

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO18 with embedded crystal

Grade

Industrial

RoHS Compliance Grade

Ecopack1

M41T93RQA6F

Package:

VFQFPN 16 4x4x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 16 4x4x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M41T93SMY6F

Package:

SO18 with embedded crystal

Material Declaration**:

Marketing Status

批量生产

Package

SO18 with embedded crystal

Grade

Industrial

RoHS Compliance Grade

Ecopack1

M41T93SQA6F

Package:

VFQFPN 16 4x4x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VFQFPN 16 4x4x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack2

M41T93ZMY6F

Package:

SO18 with embedded crystal

Material Declaration**:

Marketing Status

批量生产

Package

SO18 with embedded crystal

Grade

Industrial

RoHS Compliance Grade

Ecopack1

M41T93ZQA6F

Package:

VFQFPN 16 4x4x1.0

Material Declaration**:

Marketing Status

批量生产

Package

VFQFPN 16 4x4x1.0

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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M41T93RQA6F
Available at distributors

经销商的可用性 M41T93RQA6F

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M41T93ZMY6F
Available at distributors

经销商的可用性 M41T93ZMY6F

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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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M41T93RMY6F
Available at distributors

经销商的可用性 M41T93RMY6F

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

M41T93SMY6F
Available at distributors

经销商的可用性 M41T93SMY6F

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

M41T93SQA6F
Available at distributors

经销商的可用性 M41T93SQA6F

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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M41T93ZQA6F
Available at distributors

经销商的可用性 M41T93ZQA6F

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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M41T93RQA6F 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:

M41T93RQA6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

代理商名称

代理商库存报告日期:

M41T93ZMY6F 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:

M41T93ZMY6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

代理商名称

代理商库存报告日期:

M41T93RMY6F 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:

M41T93RMY6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

代理商名称

代理商库存报告日期:

M41T93SMY6F 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:

M41T93SMY6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

代理商名称

代理商库存报告日期:

M41T93SQA6F 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:

M41T93SQA6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

代理商名称

代理商库存报告日期:

M41T93ZQA6F 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:

M41T93ZQA6F

Operating Temperature (°C)

Min:

Max:

NVRAM size (B):

7

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