HT32L62141 Datasheet | Holtek Semiconductor

Description 32-Bit Arm® Cortex®-M0+ Smoke Detector MCU with Buzzer Driver HT32L62141 1 General Description The Holtek HT32L62141 device is high performance, ultra-low power consumption 32-bit microcontroller based around an Arm® Cortex®-M0+ processor core. The Cortex®-M0+ is a next-generation processor core which is tightly coupled with Nested Vectored Interrupt Controller (NVIC), Sys Tick timer and including advanced debug support. The device operates at a frequency of up to 48 MHz with a Flash accelerator to obtain maximum efficiency. It provides 64 KB of embedded Flash memory for code / data storage and 8 KB of embedded SRAM memory for system operation and application program usage. A variety of peripherals, such as PDMA, Hardware Divider DIV, ADC, I2C, USART, UART, SPI, MCTM, GPTM, SCTM, BFTM, CRC-16/32, 96-bit Unique ID, RTC, WDT and SW-DP (Serial Wire Debug Port), etc., are also implemented in the device series. Several power saving modes provide the flexibility for maximum optimization between wakeup latency and power consumption, an especially important consideration in ultra-low power applications. The device integrates a smoke detector and a buzzer driver with boost. The smoke detector incorporates a smoke detector AFE and two programmable constant current channels. It municates via one-wire interface. The driver consists of a buzzer driver with boost and a buzzer watchdog timer (BWDT). The buzzer driver can drive either an external-drive 2-pin buzzer or a self-driving 3-pin buzzer. The boost provides power to driver the buzzer driver and supports the MCU failure alarm function. The above features ensure that the device is suitable for use in the smoke detector applications. Rev. 1.00 6 of 62 April 09, 2025 32-Bit Arm® Cortex®-M0+ Smoke Detector MCU with Buzzer Driver HT32L62141 2 Features 2 Features Core ▆ 32-bit Arm® Cortex®-M0+ processor core ▆ Up to 48 MHz operating frequency ▆ Single-cycle multiplication ▆ Integrated Nested Vectored Interrupt...