M5485DFE

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M5485DFE Application Field and Working Principle

Embedded - Microcontroller, Microprocessor, FPGA Modules

The M5485DFE is an advanced microcontroller utilizing processor core instruction set, Coremark performance level and multicore operation support, mainly used in a wide range of embedded applications, such as automotive, medical, and industrial systems. The processor core is based on the 32-bit ARM CM3 architecture, and it includes integrated, on-chip peripherals, such as multi-channel DMA controller, serial interfaces (2xUSART, 2xUART, 1xSSP and 3xI2C), analog-to-digital converter and a watchdog timer.

The M5485DFE has a power-saving stop mode with an adjustable wake-up time from 30µs to 64Ks; a 32-bit timer, a general purpose timer and an eight-channel PWM signal controller with 16-32bit resolution. The device also has a low power consumption design that provides very low leakage current and high efficiency power optimization for maximum time-in-state operation. All these features make it suitable for battery applications, such as industrial automation and medical devices.

Working Principle

The M5485DFE microcontroller consists of a 32-bit CPU, onboard flash memory, and a variety of on-chip peripheral interfaces. The device offers up to 8 Kbytes of SRAM, 32 Kbytes of flash memory, four common ports, two universal asynchronous receiver/transceiver (UART) ports, one universal synchronous transceiver (USART) port, one synchronous serial port (SSP), six 12-bit analog-to-digital converters (ADC), four 12-bit pulse width modulation (PWM) outputs, one general purpose timer (GPT) and one watchdog timer (WDT). The device has a 16-bit real-time clock (RTC) for timekeeping functions.

The M5485DFE processes instructions from flash memory in a dedicated pipeline of 3-5 instruction cycles, as well as its own clock domain. The core clock can run up to 32 MHz, which gives fast execution and optimal power efficiency. In addition, the device has an external interrupt vector (IV) to handle all external requests from the hardware and software.

The integrated flash memory allows storing up to 32 Kbytes of instruction codes either as a single application or as multiple applications. It can be configured to use the boot mode, which allows the microcontroller to be reset and start executing the program stored in the flash memory, or it can be used as a flash storage for storing data blocks of various kinds, such as user settings.

The device features a direct memory access controller (DMA), which allows high-speed transfer of data between peripherals and the CPU. The DMA controller also offloads the CPU from handling all data transfers. The device supports multiple external interrupts, which allow the CPU to respond to hardware events asynchronously.

The device includes several advanced low power modes that can be used to reduce power consumption. When the CPU is idle, the device can be put into the sleep or deep sleep modes to save power. In addition, the device has an adjustable wake-up time, which allows it to be woken up from sleep or deep sleep mode in as little as 30µs.

Overall, the M5485DFE is an advanced and powerful microcontroller that offers many features for embedded applications. With its integrated peripherals, low power modes, and fast performance, the device is suitable for use in many applications where flexibility, reliability, and power efficiency are important.

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