Holtek has announced the release of the HT32F67593, its new 32-bit Arm® Cortex®-M0+ Bluetooth® Low Energy system-on-chip (SoC) microcontroller (MCU). The device is certified by the Bluetooth SIG for Bluetooth® 5.3 and is designed for wearable devices, handheld products and other low-power wireless applications. It is intended for applications such as sports devices, fitness trackers, healthcare equipment, and smart wellness products.
The HT32F67593 integrates processing, memory, and Bluetooth® connectivity into a single device. It operates at speeds of up to 64MHz and supports an operating voltage range of 1.8V to 3.6V, with an operating temperature range of -40°C to 85°C, allowing it to be used across a variety of environments.
The device is designed to deliver efficient RF performance while maintaining low power consumption. At a data rate of 1Mbps, it achieves a receive current of 4.1mA with a sensitivity of –94dBm. At a transmission power of +0dBm, the transmit current is 4.5mA, and the device supports transmission power levels up to +10dBm. These characteristics enable stable wireless communication in battery-powered systems.
In terms of memory and integration, the HT32F67593 includes 1024KB of Flash memory and 128KB of SRAM. It also provides 16 GPIO pins with wake-up capability, along with a 12-bit A/D converter. A wide range of peripheral interfaces is supported, including SPI, UART, I²C, SCI, IrDA and I²S, allowing flexible connectivity to external components such as sensors, storage devices and audio interfaces.
The device also includes a Direct Memory Access (DMA) controller, which allows data to be transferred between memory and peripherals without continuous CPU involvement. This helps reduce processor workload and improves overall system efficiency. To support low-power operation, the device integrates a DC-DC converter and multiple power-saving modes. The compact 28-pin LGA package, measuring 3mm × 3mm, makes it suitable for space-constrained designs. To assist designers, Holtek provides a Bluetooth® LE evaluation board, along with firmware libraries and application examples. These resources are intended to support a streamlined development process and help reduce design time.
Bluetooth Special Interest Group (Bluetooth SIG) is the official global body responsible for defining and maintaining Bluetooth standards (such as Bluetooth® 5.3), managing the technology specifications, certifying devices for compliance, and ensuring interoperability between products from different manufacturers.
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