Serial SPI bus real-time clock (RTC) with battery switchover

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  • 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.

    主要特性

    • 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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max
M41T93RQA6F VFQFPN 16 4x4x1.0 Tape And Reel -40 85
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ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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M41T93ZMY6F SO18 with embedded crystal Tape And Reel -40 85
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ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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M41T93RMY6F SO18 with embedded crystal Tape And Reel -40 85
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ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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M41T93SMY6F SO18 with embedded crystal Tape And Reel -40 85
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ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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代理商库存报告日期: 2019-12-05

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M41T93SQA6F VFQFPN 16 4x4x1.0 Tape And Reel -40 85
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1.318 10000 12
更多信息

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

查看供货情况

Distributor availability ofM41T93SQA6F

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DIGIKEY WORLDWIDE 1298 1 Order Now
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Farnell Element14 EUROPE 57 1 Order Now
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1298

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1236

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库存

1622

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1

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Farnell Element14

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57

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库存

1000

Min.Order

1000

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

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M41T93ZQA6F VFQFPN 16 4x4x1.0 Tape And Reel -40 85
批量生产
1.318 10000 12
更多信息

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

查看供货情况

Distributor availability ofM41T93ZQA6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 784 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 1000 1000 Order Now
ARROW AMERICA 7 1 Order Now
MOUSER WORLDWIDE 1188 1 Order Now
Farnell Element14 EUROPE 1000 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

784

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

1000

Min.Order

0

地区

AMERICA Order Now

FUTURE

库存

1000

Min.Order

1000

地区

WORLDWIDE Order Now

ARROW

库存

7

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1188

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1

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Farnell Element14

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1000

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代理商库存报告日期: 2019-12-05

获取样片

M41T93RQA6F

封装

VFQFPN 16 4x4x1.0

包装类型

Tape And Reel

单价(US$)

1.318*

Distributor availability ofM41T93RQA6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 333 1 Order Now
AVNET AMERICA 354 0 Order Now
ARROW EUROPE 2000 0 Order Now
ARROW AMERICA 2000 1000 Order Now
MOUSER WORLDWIDE 1663 1 Order Now
Farnell Element14 EUROPE 1380 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

333

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

354

Min.Order

0

地区

AMERICA Order Now

ARROW

库存

2000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

2000

Min.Order

1000

地区

AMERICA Order Now

MOUSER

库存

1663

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1380

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.318

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M41T93ZMY6F

封装

SO18 with embedded crystal

包装类型

Tape And Reel

单价(US$)

1.965*

Distributor availability ofM41T93ZMY6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2065 1 Order Now
MOUSER WORLDWIDE 566 1 Order Now
Farnell Element14 EUROPE 930 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

2065

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

566

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

930

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.965

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M41T93RMY6F

封装

SO18 with embedded crystal

包装类型

Tape And Reel

单价(US$)

1.965*

Distributor availability ofM41T93RMY6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 4926 1 Order Now
RS COMPONENTS EUROPE 1375 1 Order Now
ARROW EUROPE 1000 0 Order Now
ARROW AMERICA 8 1 Order Now
MOUSER WORLDWIDE 1400 1 Order Now
Farnell Element14 EUROPE 57 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

4926

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1375

Min.Order

1

地区

EUROPE Order Now

ARROW

库存

1000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

8

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1400

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

57

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.965

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M41T93SMY6F

封装

SO18 with embedded crystal

包装类型

Tape And Reel

单价(US$)

1.965*

Distributor availability ofM41T93SMY6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 3308 1 Order Now
MOUSER WORLDWIDE 806 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

3308

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

806

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.965

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M41T93SQA6F

封装

VFQFPN 16 4x4x1.0

包装类型

Tape And Reel

单价(US$)

1.318*

Distributor availability ofM41T93SQA6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1298 1 Order Now
ARROW EUROPE 1000 0 Order Now
ARROW AMERICA 1236 1 Order Now
MOUSER WORLDWIDE 1622 1 Order Now
Farnell Element14 EUROPE 57 1 Order Now
RUTRONIK EUROPE 1000 1000 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

1298

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

1000

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

1236

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1622

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

57

Min.Order

1

地区

EUROPE Order Now

RUTRONIK

库存

1000

Min.Order

1000

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.318

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

Country of Origin

MALAYSIA

M41T93ZQA6F

封装

VFQFPN 16 4x4x1.0

包装类型

Tape And Reel

单价(US$)

1.318*

Distributor availability ofM41T93ZQA6F

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 784 1 Order Now
AVNET AMERICA 1000 0 Order Now
FUTURE WORLDWIDE 1000 1000 Order Now
ARROW AMERICA 7 1 Order Now
MOUSER WORLDWIDE 1188 1 Order Now
Farnell Element14 EUROPE 1000 1 Order Now

代理商库存报告日期: 2019-12-05

代理商名称

DIGIKEY

库存

784

Min.Order

1

地区

WORLDWIDE Order Now

AVNET

库存

1000

Min.Order

0

地区

AMERICA Order Now

FUTURE

库存

1000

Min.Order

1000

地区

WORLDWIDE Order Now

ARROW

库存

7

Min.Order

1

地区

AMERICA Order Now

MOUSER

库存

1188

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1000

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-05

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

1.318

数量

10000

NVRAM size (B)

12

ECCN (US)

EAR99

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

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
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**:

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**:

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**:

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

(**) 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.

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