STCOM05 datasheet(10/58 Pages) STMICROELECTRONICS

10 / 58 page

Description

STCOM

10/58

DocID028515 Rev 1

Zero crossing comparator

The mains line zero crossing can be detected by providing a mains synchronous bipolar

(AC) signal at the input of this comparator.

The zero crossing comparator provides positive and negative event information

(rising/falling edge or high/low level).

1.2.4

Line driver

The STCOM is equipped with an integrated high-performance dual power line driver. It has

very low distortion, allowing the device to comply with EMC requirements.

When supplied at maximum voltage, the line driver is capable to provide 28 V p-p in

differential configuration or 14 V p-p in single-ended configuration.

The output current can reach 1 A rms in both differential and single-ended configurations, in

order to drive very low power line impedance.

Any overtemperature event will force the line driver to shut down, thus preventing the

STCOM to get damaged.

1.3

Application core sub-system

1.3.1

ARM® Cortex™-M4F core

The Cortex™-M4 processor is built on a high-performance processor core, with a 3-stage

pipeline Harvard architecture, making it ideal for demanding embedded applications. The

processor delivers exceptional power efficiency through an efficient instruction set and

extensively optimized design, providing high end processing hardware including IEEE754-

compliant single precision (32-bit) floating point computation, a range of a single cycle and

SIMD multiplication and multiply with accumulate capabilities, saturating arithmetic and

dedicated hardware division.

To facilitate the design of cost-sensitive devices, the Cortex™-M4 processor implements

tightly coupled system components that reduce processor area while significantly improving

interrupt handling and system debug capabilities. The Cortex™-M4 processor implements

a version of the Thumb® instruction set based on Thumb-2® technology, ensuring high code

density and reduced program memory requirements. The Cortex™-M4 instruction set

provides the exceptional performance expected of a modern 32-bit architecture, with the

high code density of 8-bit and 16-bit microcontrollers.

The Cortex™-M4 processor provides multiple interfaces using AMBA™ technology to

provide high-speed, low latency memory accesses. It supports unaligned data accesses

and implements atomic bit manipulation that enables faster peripheral controls, system

spinlocks and thread-safe Boolean data handling.

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