Microchip TechnologyAVR128DA28-E/SOMicrocontrollers - MCUs

AVR® DA Product Family

The AVR® DA family of microcontrollers feature the well-known AVR® CPU, now running at up to 24 MHz across the full supply voltage range of 1.8V to 5.5V. The family includes 32 KB, 64 KB, and 128 KB Flash variants in 28- to 64-pin package options. The AVR® DA family is designed to bring capacitive touch sensing and real-time control functions to applications including industrial control, home appliance products, automotive, and Internet of Things (IoT).

The family uses the latest Core Independent Peripherals with low-power features and 5V operation for increased noise immunity. The Event System, Configurable Custom Logic (CCL), along with intelligent analog peripherals like 12-bit differential ADC, Zero-Cross Detect (ZCD), DAC, and the latest generation Peripheral Touch Controller (PTC) with driven shield technology make the AVR® DA family perfect for low-latency control applications and capacitive touch user interfaces. The high memory density of the AVR® DA family is well suited for communications stack-intensive applications, both wired and wireless.

AVR128DA28

The AVR128DA28 microcontroller is part of the AVR® DA family featuring the AVR® processor with hardware multiplier, running at up to 24 MHz and with 128 KB Flash, 16 KB SRAM, and 512 bytes of EEPROM in 28-pin packages. The AVR128DA28 will be available in SPDIP, SSOP, and SOIC package options.

The AVR128DA28 product supports as many as 18 self-capacitance and 81 mutual capacitance touch channels, which makes the AVR® DA the perfect choice for human interface applications where multiple capacitive touch keys, sliders, wheels, or 2D surface are required.

Functional Safety

This product is suitable for safety-critical applications targeting automotive (IEC 60730), industrial (ISO26262) and automotive products (IEC 61508) products. Various important collateral and tools are available to aid developers of safety applications – refer to the Product Features below for a list of device specific safety collaterals. TÜV SÜD certified MPLABX development tools are also available for this product.

Product Features

•  Functional Safety
• •  IEC 60730 Class B library (UL certified)
• •  ISO 26262 FMEDA (ASIL B Ready certified by SGS TÜV)
• •  ISO 26262 Safety Manual (ASIL B Ready certified by SGS TÜV)
• •  ISO 26262 software diagnostics (certification pending)
• •  IEC 61508 FMEDA
• •  IEC 61508 Safety Manual (ultimo 2021)
• •  MPLAB XC8 Functional Safety Pro compiler

•  High-Performance AVR RISC CPU with Hardware Multiplier
• •  Running up to 24 MHz
• •  Single Cycle I/O Access
• •  Two-level Interrupt Controller
• •  Sleep Modes: Idle, Standby, Power-down
• •  Event System (EVSYS)
• •  Configurable Custom Logic (CCL)
• •  Single pin programming and debugging interface (UPDI)

•  Analog Features
• •  12-bit Differential Analog-to-Digital Converter (ADC)
• •  10-bit Digital-to-Analog Converter (DAC) with Output Buffer
• •  Zero-Cross Detector (ZCD)
• •  Analog Comparator

•  Time Counters
• •  Timer/Counter type A (TCA)
• •  Timer/Counter type B (TCB)
• •  Timer/Counter type D (TCD) for control applications

•  User Interfaces - Peripharal Touch Controller (PTC)
• •  1D Capactive Touch with MCU (Buttons, Sliders, Wheels, Proximity)
• •  2D Capactive Touch Surface/Pads with MCU

•  Communication
• •  Serial communication interfaces: USART, SPI, I2C

•  Built-in Safety Functions
• •  Power-On Reset (POR)
• •  Brown-Out-Detection (BOD)
• •  Voltage Level Monitor (VLM)
• •  Cyclic Redundancy Check (CRC) Scan
• •  Window Watchdog Timer with Window Mode (WWDT)