M41ST84WMQ datasheet(1/31 Pages) STMICROELECTRONICS

部件名	M41ST84WMQ

功能描述	5.0 or 3.0V, 512 bit 64 x 8 SERIAL RTC with SUPERVISORY FUNCTIONS

PDF	31 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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June 2003

Rev. 4.0

M41ST84Y

M41ST84W

5.0 or 3.0V, 512 bit (64 x 8) SERIAL RTC

with SUPERVISORY FUNCTIONS

* Contact Local Sales Office

FEATURES SUMMARY

s

5.0 OR 3.0V OPERATING VOLTAGE

s

SERIAL INTERFACE SUPPORTS I2C BUS

(400 KHz)

s

OPTIMIZED FOR MINIMAL INTERCONNECT

TO MCU

s

2.5 TO 5.5V OSCILLATOR OPERATING

VOLTAGE

s

AUTOMATIC SWITCH-OVER and DESELECT

CIRCUITRY

s

CHOICE OF POWER-FAIL DESELECT

VOLTAGES:

– M41ST84Y: VCC = 4.5 to 5.5V;

4.20V

≤ VPFD ≤ 4.50V

– M41ST84W: VCC = 2.7 to 3.6V;

2.55V

≤ VPFD ≤ 2.70V

s

1.25V REFERENCE (for PFI/PFO)

s

COUNTERS FOR TENTHS/HUNDREDTHS

OF SECONDS, SECONDS, MINUTES,

HOURS, DAY, DATE, MONTH, YEAR, and

CENTURY

s

44 BYTES OF GENERAL PURPOSE RAM

s

PROGRAMMABLE ALARM and INTERRUPT

FUNCTION (VALID EVEN DURING BATTERY

BACK-UP MODE)

s

WATCHDOG TIMER

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MICROPROCESSOR POWER-ON RESET

s

BATTERY LOW FLAG

s

ULTRA-LOW BATTERY SUPPLY CURRENT

OF 500 nA (max)

s

OPTIONAL PACKAGING INCLUDES A 28-

LEAD SOIC and SNAPHAT® TOP (to be

ordered separately)

s

SNAPHAT PACKAGE PROVIDES DIRECT

CONNECTION FOR A SNAPHAT TOP,

WHICH CONTAINS THE BATTERY and

CRYSTAL

Figure 1. 16-pin SOIC Package

Figure 2. 28-pin SOIC Package*

16

1

SO16 (MQ)

28

1

SOH28 (MH)

SNAPHAT (SH)

Battery & Crystal

类似零件编号 - M41ST84WMQ

制造商	部件名	数据表	功能描述
STMicroelectronics	M41ST84WMQ6	481Kb / 29P	3.0/3.3V I2C Serial RTC with Supervisory Functions Jan-2006
	M41ST84WMQ6E	481Kb / 29P	3.0/3.3V I2C Serial RTC with Supervisory Functions Jan-2006
	M41ST84WMQ6E	302Kb / 34P	3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions 28-Aug-2008
	M41ST84WMQ6F	481Kb / 29P	3.0/3.3V I2C Serial RTC with Supervisory Functions Jan-2006
	M41ST84WMQ6F	302Kb / 34P	3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions 28-Aug-2008

More results

类似说明 - M41ST84WMQ

制造商	部件名	数据表	功能描述
STMicroelectronics	M41ST85Y	530Kb / 34P	5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR Sep-2004
	M41T94	433Kb / 31P	512 Bit 64 bit x8 SERIAL RTC SPI SRAM Rev. 2.0
	ST93C66	107Kb / 13P	4K 256 x 16 or 512 x 8 SERIAL MICROWIRE EEPROM Jul-1997
Advanced Micro Devices	AM27C512	168Kb / 12P	512 Kilobit (64 K x 8-Bit) CMOS EPROM
STMicroelectronics	M41ST87W	733Kb / 42P	5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection Mar-2006
	M41ST95W	545Kb / 35P	5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor Sep-2004
	M41ST84W	481Kb / 29P	3.0/3.3V I2C Serial RTC with Supervisory Functions Jan-2006
	M41ST84W	302Kb / 34P	3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions 28-Aug-2008
Cypress Semiconductor	CY14B512Q1	1Mb / 27P	512-Kbit (64 K x 8) Serial (SPI) nvSRAM
Cypress Semiconductor	CY14C512J	1Mb / 30P	512-Kbit (64 K x 8) Serial (I2C) nvSRAM