Modern smoke detection systems today require not only high precision measurement, but also extremely low power consumption and reliable operation for many years. The HT32L62141 microcontroller, based on the 32-bit Arm® Cortex®-M0+ architecture, is designed for just such demanding applications.
The HT32L62141 is a microcontroller that combines advanced sensing technology with extremely low power consumption. It is ideal for smoke detector manufacturers who expect not only long battery life, but also reliability, flexibility and ease of design.
The chip integrates an analog front-end (AFE) for smoke detection, a two-channel constant-current LED driver, and an amplifier for the buzzer with a voltage boost function up to 9 V. With support for both two- and three-pin piezo transducers and an alarm function in case of MCU failure, the HT32L62141 offers full support for reliable and secure alarm applications.
With ultra-low power (ULP) technology and an extensive set of power-saving modes, the microcontroller meets the requirements of a 10-year battery life, a key parameter in modern standalone smoke detectors.
The HT32L62141 operates at a maximum clock frequency of up to 48 MHz, offering very high computing performance. It features 64 KB of Flash memory for program storage and 8 KB of SRAM for data, a 6-channel PDMA controller, a multi-channel 12-bit A/D converter with a conversion rate of up to 1 Msps, a hardware divider (DIV), a CRC16/32 module and a precision reference voltage source. In addition, the microcontroller offers multiple timer modules and communication interfaces to support a wide range of sensor system applications.
The chip is available in a 64-pin LQFP-type package for easy integration into existing hardware designs. For engineers and developers, Holtek has prepared a rich background of development tools - the microcontroller is supported by popular development environments such as Keil, IAR, SEGGER and GNU, as well as dedicated peripheral libraries and application notes. This significantly speeds up the device design process and reduces time to market.
With the release of the new microcontrollers, Holtek has also released its own free HT32-IDE integrated development environment, version 1.0. Based on the proven Eclipse interface, HT32-IDE offers full support for all 32-bit Holtek chips and includes an integrated GNU C (GCC for ARM) compiler.
The HT32-IDE environment enables debugging of HT32 family microcontrollers using the e-Link32 Pro interface and supports a convenient project conversion mechanism from the popular Keil MDK V5 environment, making it easy to migrate projects and reduce implementation time. With integrated code editing functions, debug status preview, and support for variable and peripheral register preview, the environment provides a complete tool to support the entire project lifecycle.
The HT32L62141, combined with the dedicated HT32-IDE environment, sets a new standard in the design of energy-efficient security systems.
