Description

The STMicroelectronics M4T32-BR12SH1 is a SNAPHAT® battery and crystal module designed to provide backup power and timekeeping support for compatible STMicroelectronics TIMEKEEPER® and real-time clock devices. The M4T32-BR12SH1 integrates a long-life lithium battery and a precision 32.768kHz crystal into a removable module that attaches directly to compatible SNAPHAT SOIC packages. Therefore, it delivers reliable backup power and accurate clock operation during system power interruptions.

M4T32-BR12SH1 Function

The M4T32-BR12SH1 is designed to provide continuous backup power for real-time clock and non-volatile memory devices when primary system power is unavailable. As a result, critical date, time, and stored data information can be maintained during outages. In addition, the integrated crystal ensures precise clock timing for supported TIMEKEEPER® devices.

Integrated Battery and Crystal Design

The M4T32-BR12SH1 combines both a lithium battery and a 32.768kHz crystal within a single compact SNAPHAT module. Consequently, designers can simplify system assembly while reducing component count. Furthermore, the integrated design ensures compatibility and reliable operation with supported STMicroelectronics timekeeping devices.

2.8V Backup Power Source

This SNAPHAT module provides a nominal battery voltage of 2.8 volts, ensuring dependable backup power for compatible RTC and TIMEKEEPER® devices. Therefore, critical system functions can continue operating even during extended power interruptions. Additionally, the lithium battery chemistry offers long-term reliability and low self-discharge characteristics.

120mAh Lithium Battery Capacity

The M4T32-BR12SH1 incorporates a lithium battery with a nominal capacity of 120mAh. As a result, supported devices can maintain clock and memory functions for extended periods without external power. Moreover, the high-capacity design makes it suitable for industrial, embedded, and commercial electronic applications.

Precision 32.768kHz Crystal

The integrated crystal operates at 32.768kHz, the industry-standard frequency for real-time clock applications. Consequently, compatible devices can generate accurate one-second timing intervals while maintaining low power consumption. Furthermore, the crystal features a nominal load capacitance of 12.5pF and accuracy of approximately ±35ppm at 25°C.

Removable SNAPHAT Construction

The SNAPHAT design allows the battery and crystal assembly to be attached after the SOIC package has been soldered to the PCB. Therefore, sensitive battery and crystal components are protected from the high temperatures associated with surface-mount assembly processes. Additionally, the removable design simplifies replacement and disposal at the end of battery life.

Compatible Applications

The M4T32-BR12SH1 is commonly used with:

• ST TIMEKEEPER® devices
• Real-time clock modules
• Industrial controllers
• Embedded systems
• Data logging equipment
• Telecommunications equipment
• Consumer electronics
• Network devices
• Automation systems
• Backup timing applications

Consequently, it provides dependable timekeeping support across a wide range of electronic designs.

Technical Specifications

• Model: M4T32-BR12SH1
• Manufacturer: STMicroelectronics
• Product Type: SNAPHAT® Battery and Crystal Module
• Nominal Battery Voltage: 2.8V
• Battery Capacity: 120mAh
• Battery Chemistry: Lithium Li(CF)
• Crystal Frequency: 32.768kHz
• Crystal Load Capacitance: 12.5pF
• Crystal Accuracy: ±35ppm at 25°C
• Package Type: SNAPHAT®
• Connection Method: Snap-On SOIC Interface
• Compatible Devices: ST TIMEKEEPER® and RTC Devices
• Operating Temperature: 0°C to 70°C
• Mounting Method: Removable Snap-On Design
• RoHS Compliant: Yes
• Package Style: Tube Packaging
• Application: Backup Power and Timekeeping Support

Applications

The M4T32-BR12SH1 is ideal for:

• Real-time clock backup
• TIMEKEEPER® memory systems
• Industrial automation equipment
• Embedded electronics
• Data acquisition systems
• Telecommunications infrastructure
• Control systems
• Network appliances
• Consumer electronics
• Backup timing applications

Reliable Backup Power and Timekeeping Solution

The STMicroelectronics M4T32-BR12SH1 combines a 120mAh lithium battery, precision 32.768kHz crystal, removable SNAPHAT construction, and 2.8V nominal output in a compact module designed for real-time clock and TIMEKEEPER® applications. Overall, it provides dependable backup power and accurate timekeeping support for electronic systems that require continuous operation during power interruptions.

M4T32-BR12SH1 Datasheet