M41T94MH6F datasheet(1/39 Pages) STMICROELECTRONICS

Part #	M41T94MH6F

Description	Serial real-time clock with 44 bytes NVRAM and reset

PDF	39 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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This is information on a product in full production.

March 2024

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M41T94

Serial real-time clock with 44 bytes NVRAM and reset

Datasheet

- production data

Features

• Counters for tenths/hundredths of seconds,

seconds, minutes, hours, day, date, month,

year, and century

• 32 KHz crystal oscillator integrating load

capacitance (12.5 pF) providing exceptional

oscillator stability and high crystal series

resistance operation

• Serial peripheral interface (2 MHz SPI)

• Ultralow battery supply current of 500 nA (max)

• 2.7 to 5.5 V operating voltage

• 2.5 to 5.5 V oscillator operating voltage

• Battery low flag

• Automatic switchover and deselect circuitry

• 44 bytes of general purpose RAM

• Programmable alarm and interrupt function

(valid even during battery backup mode)

• Accurate programmable watchdog timer (from

62.5 ms to 128 s)

• Microprocessor power-on reset

• Choice of power-fail deselect voltages

(VCC = 2.7 to 5.5 V):

– THS = VSS; 2.55 V ≤ VPFD ≤ 2.70 V

– THS = VCC; 4.20 V ≤ VPFD ≤ 4.50 V

• Packaging includes a 28-lead SOIC and

SNAPHAT® top (to be ordered separately) or

16-lead SOIC

• 28-lead SOIC package provides direct

connection for a SNAPHAT® top which

contains the battery and crystal

• RoHS compliant

– Lead-free second level interconnect

16

1

28

1

SO16 (MQ)

SOH28 (MH)

SNAPHAT® (SH)

battery & crystal

www.st.com

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M41T94MH6F Datasheet(PDF) 1 Page - STMicroelectronics

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