M41T94 datasheet(1/40 Pages) STMICROELECTRONICS

номер детали	M41T94

подробное описание детали	Serial Real Time Clock with 44Bytes NVRAM and Reset

PDF	40 Pages

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производитель	STMICROELECTRONICS [STMicroelectronics]

домашняя страница	http://www.st.com

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1 / 40 page

August 2006

Rev 4

1/40

1

M41T94

Serial Real Time Clock with 44Bytes NVRAM and Reset

Feature summary

■

Counters for tenths/hundredths of seconds,

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

year, and century

■

32KHz crystal oscillator integrating load

capacitance (12.5pF) providing exceptional

oscillator stability and high crystal series

resistance operation

■

Serial peripheral interface (2MHz SPI)

■

Ultra-low battery supply current of 500nA (max)

■

2.7 to 5.5V operating voltage

■

2.5 to 5.5V oscillator operating voltage

■

Battery low Flag

■

Automatic switch-over and deselect circuitry

■

44 bytes of general purpose RAM

■

Programmable Alarm and interrupt function

(valid even during battery back-up mode)

■

Accurate programmable Watchdog timer (from

62.5ms to 128s)

■

Microprocessor power-on reset

■

Choice of power-fail deselect voltages

(VCC = 2.7 to 5.5V):

–THS = VSS; 2.55V ≤VPFD ≤2.70V

–THS = VCC; 4.20V ≤VPFD ≤4.50V

■

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

16

1

SO16 (MQ)

28

1

SOH28 (MH)

SNAPHAT (SH)

Battery & Crystal

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Аналогичный номер детали - M41T94

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STMicroelectronics	M41T94	433Kb / 31P	512 Bit 64 bit x8 SERIAL RTC SPI SRAM Rev. 2.0
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Аналогичное описание - M41T94

производитель	номер детали	датащи	подробное описание детали
STMicroelectronics	M41T11	231Kb / 29P	Serial Real Time Clock with 56 Bytes of NVRAM 22-Aug-2006
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STMicroelectronics	M41T94	346Kb / 41P	Serial real-time clock with 44 bytes NVRAM and reset 09-Nov-2007
	M41T11	254Kb / 29P	Serial real-time clock with 56 bytes of NVRAM 02-May-2008
	M41T56	222Kb / 25P	Serial real-time clock with 56 bytes NVRAM 13-Dec-2007
	M41T94	358Kb / 41P	Serial real-time clock with 44 bytes NVRAM and reset 13-Jan-2009
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