M41T93SMY6F - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

M41T93SMY6F
Manufacturer

ST Microelectronics
ChipWorker Part#

CW45617987
Category

Real Time Clock IC
Package

SOIC-18
Description

Real Time Clock Serial 32Byte Clock/Calendar/Alarm/Battery Backup/Interrupt 18Pin SOX T/R
Documentation

Datasheet

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M41T93SMY6F Specifications

Attribute	Attribute Value

Part Number	M41T93SMY6F
Manufacturer	ST Microelectronics
ChipWorker Part#	CW45617987
Category	Real Time Clock IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	18 Pin
Case/Package	SOIC-18
Supply Voltage (DC)	3.00V (min)
Power Dissipation	1000 mW
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1000 mW
Supply Voltage	3V ~ 5.5V
Supply Voltage (Max)	5.5 V
Supply Voltage (Min)	3 V
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Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

Description
The M41T93 is a low power Serial SPI Bus Real Time Clock with a built-in 32.768kHz oscillator (external crystal-controlled for the QFN16 package, and embedded crystal for the SOX18 package). Eight bytes of the Register Map (see Table 3 on page 18) 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.
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 busserial 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 timestamp (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

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