Holtek unveils first in-house developed microcontrollers

They suit applications with increased computing requirements.

The MCUs are available from distributor Ineltek.

240MHz, 256kB or 1024kB Flash and the extended temperature range from -40°C to +105°C enable the use in a wide range of industrial applications.

In addition, Holtek has integrated 224kB of SRAM. The MCUs operate in the 2.6V to 3.6V voltage range and have 5V tolerant GPIOs (37 to 80).

Serial interfaces such as I2C, SPI, I2S together with USART/UARTs are also available as well as USB 2.0 Full-Speed and CAN 2.0 a/b.

With the XMC (External Memory Controller) external memories can be flexibly connected. SRAM, PSRAM, NAND and NOR memories are supported with 8-bit or 16-bit data bus width. Additionally, a SDIO host interface is available (50MHz, 8-bit bus mode, SDIO 2.0, MMC 4.2).

For the input and output of analogue signals 3 ADCs and 2 DACs are available. The ADCs convert with a resolution of 12-bit at a sampling rate that can be set as high as 2 Msps on up to 18 channels each.

Due to a complex digital control peripheral, different scenarios can be realised. With a master/slave mode the ADCs can be linked. Simultaneous conversions are also possible on two ADCs.

The DACs also work with a resolution of up to 12-bit (8-bit also possible) and can be used independently as well as simultaneously in Dual DAC mode.

17 timers – divided into Basic Timer (2x), General Purpose Timer (8x 16-bit, 2x 32-bit), Watchdog Timer (2x), SysTik and Advanced Control Timer (2x – for motor control incl. dead time generation and emergency brake feature) offer a solid basis for different applications.

Holtek offers a space-saving 6mm x 6mm option with a QFN48. LQFP packages of 48 (7mm x 7mm), 64 (10mm x 10mm) and 100 pin (14mm x 14mm) offer respectively more GPIOs and interfaces.