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  4. Microchip — AVR® EA Family of Microcontrollers (MCUs)

Microchip — AVR® EA Family of Microcontrollers (MCUs)

Microchip

 

Microchip AVR EA family of Microcontrollers (MCUs)

Equipped for reliability in harsh environments

Microchip equipped their AVR EA family of microcontrollers (MCUs) with high-speed integrated analog, hardware-based Core Independent Peripherals (CIPs) and low-power performance for efficient real-time control, sensor node and secondary safety monitoring applications.

Microchip offers this family of 16 KB to 64 KB Flash devices in SPDIP, SSOP, TQFP and VQFN packages ranging from 28 to 48 pins. The MCU series is a great option for closed-loop control system designs and secondary monitoring devices for safety reasons.

Features

  • High-performance, low-power AVR CPU running at up to 20 MHz
  • Up to 64 KB Flash with dedicated RWW section, up to 6 KB SRAM, 512B EEPROM
  • Event System for CPU-independent and predictable interperipheral communication (CIPs)
  • Configurable Custom Logic (CCL)
  • Analog features:
    • 12-bit 375 ksps differential ADC
    • PGA with up to 16x gain
    • 10-bit DAC
    • Comparators with window compare functions
  • Built-in safety functions, enabling robust and reliable designs:
    • POR, BOD, VLM, WDT, CRCSCAN
    • Clock Failure Detection (CFD)
  • Power-saving Sleep modes:
    • Idle, Standby, and Power-Down with full data retention
  • Operating voltage from 1.8V to 5.5V
  • Temperature Ranges:
    • -40°C to 85°C (standard)
    • -40°C to 125°C (extended)

Applications

  • Sensors in noisy environments benefiting from noise suppression capabilities
  • Real-time control systems, such as power converters and secondary safety monitoring
  • Analog interface chip for larger MCU/MPUs with limited analog performance

 

Geared for Harsh Environments

Designers of reliable sensor end node applications require an MCU that can quickly and accurately measure and convert signals in harsh environments while also using power efficiently. Featuring a 12-bit differential Analog-to-Digital Converter (ADC) and a Programmable Gain Amplifier (PGA) with up to 16x gain, the AVR EA family enables measurement of smaller amplitude signals, reclaims signals from noisy environments and performs fast conversion of the signals.

The accurate and temperature-stable internal 20 MHz RC oscillator, Configurable Custom Logic (CCL), event system and CIPs significantly reduce the need for external components. If a higher-accuracy oscillator is required, the AVR EA family also features an External High Frequency Oscillator (XOSCHF) with Clock Failure Detection (CFD).
 

AVR EA Block Diagram

 

MCP8021/2

These devices are 3-phase Brushless DC (BLDC) power modules containing three integrated half-bridge drivers, capable of driving three external NMOS/NMOS transistor pairs.

The three phase half-bridge gate driver is capable of delivering a peak output current of 0.5A at 12V for driving high-side and low-side NMOS MOSFET transistors. The driver has shoot-through, overcurrent, and short-circuit protection. A Sleep mode has been added.

The following functions are user-configurable: dead time, blanking time, enable/ disable Sleep mode, enable/disable overcurrent detection, and enable/disable gate drive undervoltage protection.
 

Microchip MCP8021

 

Microchip AVR16EA32