SWM181CBT6-50 Datasheet Overview

1. Introduction

The SWM181CBT6-50 is a part of the SWM181 series of 32-bit MCUs (Microcontroller Units). These MCUs are embedded with an ARM® Cortex-M0 kernel. The series is well - known for its excellent performance, high reliability, low power consumption, and large code density. This makes it suitable for a wide range of applications, including industrial control, motor control, and white - goods.

2. Core and General Features

The SWM181CBT6-50 uses a 32 - bit ARM® Cortex™ - M0 kernel. It has a 24 - bit system timer and can operate at a maximum frequency of 48MHz. It supports hardware single - cycle multiplication, which speeds up arithmetic operations. The integrated nested vector interrupt controller (NVIC) provides up to 32 interrupts with 4 - level configurable priority. Program burning is achieved through the SWD interface, and it has a built - in LDO with a power supply voltage range from 2.3V (2.7V) to 3.6V.

3. Memory Configuration

In terms of memory, the SRAM (Static Random - Access Memory) of the SWM181CBT6-50 is 16KB. For FLASH memory, it offers options of 64KB, 120KB, or 248KB, and supports user - customized settings. It also supports ISP (In - System Programming) to update user programs and allows users to define their own BOOT programs.

4. Serial Interfaces

The MCU is equipped with a variety of serial interfaces. There are 4 UARTs (Universal Asynchronous Receiver - Transmitter) each having an independent 8 - byte FIFO and supporting a maximum master - clock 16 -分频. There are also 2 SPIs (Serial Peripheral Interface) with 8 - byte independent FIFOs, supporting SPI and SSI protocols, and both master and slave modes. 2 I2Cs (Inter - Integrated Circuit) are available, supporting 8 - bit and 10 - bit address modes and both master and slave modes. Additionally, it has 1 CAN (Controller Area Network) interface that supports the 2.0A (11 - bit identifier) and 2.0B (29 - bit identifier) protocols. The PORTCON control module enables users to define the function pins of UART, I2C, COUNTER, PWM, and CAN on any IO.

5. PWM and Timer Modules

The PWM (Pulse - Width Modulation) control module of the SWM181CBT6-50 is an 8 - channel 16 - bit PWM generator. It can set interrupt triggers based on two conditions: high - level end or cycle start. It has multiple output modes such as normal, complementary, and center - symmetric, and also supports dead - zone control. The interaction with the ADC is completed by hardware. The timer module consists of 4 32 - bit general - purpose timers that can be used as counters, and 1 of them supports the HALL interface.

6. Other Features and Applications

Apart from the above features, the SWM181 series, including the SWM181CBT6-50, supports on - chip clocks with an accuracy of within 1% at 24MHz and 48MHz. It also has a 32 - bit division module, a segment - code liquid - crystal drive module, an angle - calculation module, and 3 comparator modules. Moreover, it provides undervoltage detection and low - voltage reset functions.

In practical applications, due to its high performance and rich peripheral interfaces, the SWM181CBT6-50 can play a significant role in industrial automation systems, where it can be used to control motors, sensors, and communicate with other devices. In white - goods, it can manage functions such as temperature control, speed regulation, and display control, providing reliable and efficient operation.

In conclusion, the SWM181CBT6-50 is a powerful and versatile MCU that meets the needs of various applications with its excellent performance and rich set of features.