M41T93 datasheet(1/51 Pages) STMICROELECTRONICS

部件名	M41T93

功能描述	Serial SPI bus RTC with battery switchover

PDF	51 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 51 page

October 2007

Rev 3

1/51

51

M41T93

Serial SPI bus RTC with battery switchover

Features

■ Ultra-low battery supply current of 365nA

■ Factory calibrated accuracy

±5PPM

guaranteed after 2 reflows (SOX18)

– Much better accuracies achievable using

built-in programmable analog and digital

calibration circuits

■ 2.0V to 5.5V clock operating voltage

■ Counters for tenths/hundredths of seconds,

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

year, and century

■ Automatic switch-over and reset output

circuitry (fixed reference)

–M41T93S: VCC = 3.0V to 5.5V

(2.85V

≤ VRST ≤ 3.00V)

–M41T93R: VCC = 2.7V to 5.5V

(2.55V

≤ VRST ≤ 2.70V)

–M41T93Z: VCC = 2.38V to 5.50V

(2.25V

≤ VRST ≤ 2.38V)

■ Compatible with SPI bus serial interface

(positive clock SPI modes)

■ Programmable alarm with interrupt function

(valid even during battery back-up mode)

■ Optional 2nd programmable alarm available

■ Square wave output (defaults to 32kHz on

power-up)

■ RESET (RST) output

■ Watchdog timer

■ Programmable 8-bit counter/timer

■ 7 bytes of battery-backed user SRAM

■ Battery low flag

■ Power-down time stamp (HT bit)

■ Low operating current of 80µA

■ Oscillator stop detection

■ Battery or Super-cap™ back-up

■ Operating temperature of –40°C to +85°C

■ Package options include:

– a 16-lead QFN or an 18-lead embedded

crystal SOIC

■ RoHS compliance: lead-free components are

compliant with the RoHS directive

SOX18 (MY, 18-pin, 300mil SOIC

QFN16, 4mm x 4mm (QA)

1

18

with embedded crystal)

www.st.com

类似零件编号 - M41T93

制造商	部件名	数据表	功能描述
STMicroelectronics	M41T93	416Kb / 49P	Serial SPI bus RTC with battery switchover 07-Aug-2006
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	M41T93RMY6E	416Kb / 49P	Serial SPI bus RTC with battery switchover 07-Aug-2006
	M41T93RMY6E	446Kb / 51P	Serial SPI bus RTC with battery switchover 15-Aug-2008

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