STMicroelectronics M4T32-BR12SH6 Battery

The STMicroelectronics M4T32-BR12SH6 is a SNAPHAT® battery and crystal module designed to provide reliable backup power and timekeeping support for compatible STMicroelectronics TIMEKEEPER® and real-time clock devices. The M4T32-BR12SH6 combines a long-life lithium battery and precision 32.768kHz crystal into a removable module that attaches directly to compatible 28-pin and 44-pin SNAPHAT SOIC packages. Therefore, it ensures continuous clock operation and memory retention during system power interruptions.

M4T32-BR12SH6 Function

The M4T32-BR12SH6 is designed to provide backup power for real-time clock and non-volatile memory devices when primary system power is unavailable. As a result, critical date, time, configuration, and stored data information can be preserved during power outages. In addition, the integrated crystal provides accurate clock timing for compatible TIMEKEEPER® devices.

Integrated Battery and Crystal Design

The M4T32-BR12SH6 combines both a lithium battery and a 32.768kHz crystal into a single compact SNAPHAT module. Consequently, system designers can reduce component count and simplify board design. Furthermore, the integrated design ensures proper compatibility and dependable operation with supported STMicroelectronics clock and memory devices.

2.8V Backup Power Source

This SNAPHAT module provides a nominal output voltage of 2.8 volts, supplying dependable backup power for compatible RTC and TIMEKEEPER® applications. Therefore, essential system functions can continue operating even when external power is removed. Additionally, the lithium chemistry provides long service life and excellent reliability.

120mAh Lithium Battery Capacity

The M4T32-BR12SH6 incorporates a lithium battery with a nominal capacity of 120mAh. As a result, supported devices can maintain memory and clock functions for extended periods during power loss. Moreover, the high-capacity design makes it suitable for industrial, networking, communications, and embedded electronics applications.

Precision 32.768kHz Crystal

The integrated crystal operates at 32.768kHz, the standard frequency used for real-time clock applications. Consequently, compatible devices can generate accurate one-second timing intervals while maintaining low power consumption. Furthermore, the crystal utilizes a 12.5pF load capacitance for stable operation.

Removable SNAPHAT Construction

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

Key Features

• 2.8V Nominal Output Voltage
• 120mAh Lithium Battery Capacity
• Integrated 32.768kHz Crystal
• Removable SNAPHAT Design
• Compatible with 28-Pin and 44-Pin SOIC Packages
• Prevents Battery Exposure to Reflow Temperatures
• Keyed Insertion for Proper Installation
• Replaceable Battery Module
• RoHS Compliant
• Designed for TIMEKEEPER® and RTC Applications

Compatible Applications

The M4T32-BR12SH6 is commonly used in:

• ST TIMEKEEPER® Devices
• Real-Time Clock Modules
• Industrial Controllers
• Networking Equipment
• Telecommunications Systems
• Embedded Electronics
• Data Acquisition Systems
• Security Systems
• Process Control Equipment
• Memory Backup Applications

Consequently, it provides dependable backup power and clock functionality across a wide range of electronic systems.

Technical Specifications

• Model: M4T32-BR12SH6
• Manufacturer: STMicroelectronics
• Product Type: SNAPHAT® Battery and Crystal Module
• Nominal Voltage: 2.8V
• Battery Capacity: 120mAh
• Battery Chemistry: Lithium
• Crystal Frequency: 32.768kHz
• Load Capacitance: 12.5pF
• Package Type: SNAPHAT®
• Compatible Package Sizes: 28-Pin and 44-Pin SOIC
• Mounting Method: Snap-On Installation
• Operating Temperature: -40°C to +85°C
• RoHS Compliant: Yes
• Function: Backup Power and Timekeeping Support
• Application: RTC and TIMEKEEPER® Systems

Applications

The STMicroelectronics M4T32-BR12SH6 is ideal for:

• Real-Time Clock Backup
• Non-Volatile Memory Backup
• Industrial Automation Systems
• Embedded Control Systems
• Telecommunications Equipment
• Network Infrastructure
• Security Systems
• Electronic Instrumentation
• Data Logging Devices
• OEM Replacement Applications

Reliable Backup Power and Timekeeping Solution

The STMicroelectronics M4T32-BR12SH6 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 while protecting sensitive battery and crystal components from surface-mount assembly temperatures, making it an ideal solution for industrial and embedded electronic systems.

M4T32-BR12SH6 Datasheet