8-bit microcontroller slashes footprint by up to 50%

12th June 2017

Mick Elliott

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Datasheet

The MC9S08SU 8-bit microcontroller from NXP Semiconductors is in stock at Mouser Electronics. This single-chip device for 4.5V – 18V motor control applications delivers high performance with tight integration to help lower BOM costs and reduce footprint by up to 50% for space-constrained applications.

The microcontroller provides up to 16kbytes of flash memory and 768bytes of internal RAM to enhance in-application reprogrammability and reduce development time.

The device’s core includes a three-phase MOSFET pre-drivers unit that supports three high-side p-channel and three low-side n-channel MOSFETs, as well as amplifiers for current measurement and over-current and over-voltage protection.

A rich set of features is offered, including a six-channel PWM module, two 16-bit pulse width timers, a two-channel flex timer, and a 16-bit module timer.

The device also has two 5-channel, 12-bit analogue-to-digital converters (ADCs) and a three-phase analogue comparator for sensorless control, plus an SCI module and an I²C module that supports the SMBus interface.

For development, Mouser also stocks the S08SU16-EVK evaluation board. The board demonstrates a simple control approach to a low-power, three-phase, brushless DC (BLDC) motor drive application using back electromotive force (BEMF) sensing for position recognition.

The microcontroller is available in a 4mm × 4mm, 24-pin QFN package and operates over a temperature range of minus 40 to 105 degrees Celsius.

It is ideal for a variety of motor control applications, including BLDC motors, DC fans, healthcare devices, power tools, and electronic speed control (ESC) for drones and robotics.