AVR32DB28 Series

Analog Signal Conditioning, Multi-Voltage I/O

Catalog

Analog Signal Conditioning, Multi-Voltage I/O

Part	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	RAM Size	EEPROM Size	Number of I/O	Data Converters [custom]	Data Converters [custom]	Oscillator Type	Core Size	Connectivity	Program Memory Size	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [custom]	Package / Case	Package / Case [custom]	Program Memory Type	Speed	Core Processor	Mounting Type	Package / Case [x]	Package / Case [y]	Package / Case	Package / Case
Microchip Technology AVR32DB28-I/SS	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SSOP	85 °C	-40 °C	0.209 in	28-SSOP	5.3 mm	FLASH	24 MHz	AVR	Surface Mount
Microchip Technology AVR32DB28T-I/SO	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SOIC	85 °C	-40 °C		28-SOIC		FLASH	24 MHz	AVR	Surface Mount	0.295 in	7.5 mm
Microchip Technology AVR32DB28-E/SS	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SSOP	125 °C	-40 °C	0.209 in	28-SSOP	5.3 mm	FLASH	24 MHz	AVR	Surface Mount
Microchip Technology AVR32DB28T-E/SS	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SSOP	125 °C	-40 °C	0.209 in	28-SSOP	5.3 mm	FLASH	24 MHz	AVR	Surface Mount
Microchip Technology AVR32DB28-I/SO	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SOIC	85 °C	-40 °C		28-SOIC		FLASH	24 MHz	AVR	Surface Mount	0.295 in	7.5 mm
Microchip Technology AVR32DB28-E/SP	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SPDIP	125 °C	-40 °C		28-DIP		FLASH	24 MHz	AVR	Through Hole			0.3 in	7.62 mm
Microchip Technology AVR32DB28T-E/SO	1.8 V	5.5 V	4K x 8	512 x 8	21 I/O	1x10b	9x12b	Internal	8-Bit	I2C SPI UART/USART	32 KB	28-SOIC	125 °C	-40 °C		28-SOIC		FLASH	24 MHz	AVR	Surface Mount	0.295 in	7.5 mm

Catalog

Analog Signal Conditioning, Multi-Voltage I/O

Key Features

• Functional Safety* [Appliances safety - IEC 60730 (Class B)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/functional-safety/iec-60730-functional-safety-for-home-appliances)

• * [Industrial safety – IEC 61508 (SIL)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/functional-safety/iec-61508-industrial-functional-safety)

• * [Automotive safety – ISO 26262 (ASIL)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/functional-safety/iso-26262-automotive-functional-safety)

•

• High-Performance AVR RISC CPU with Hardware Multiplier* Running up to 24 MHz

• * External High-Frequency Oscillator

• * Single Cycle I/O Access

• * Two-level Interrupt Controller

• * Sleep Modes: Idle, Standby, Power-down

• * [Multi-Voltage I/O (MVIO)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/system-flexibility/mvio)

• * [Event System (EVSYS)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/system-flexibility/event-system)

• * [Configurable Custom Logic (CCL)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/system-flexibility/custom-logic)

• * Single pin programming and debugging interface (UPDI)

•

• Analog Features* [2 x Operational Amplifiers (OPAMPs)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/integrated-analog/operational-amplifier)

• * [12-bit Differential Analog-to-Digital Converter (ADC)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/integrated-analog/analog-to-digital-converter-with-enhanced-features)

• * [10-bit Digital-to-Analog Converter (DAC) with Output Buffer](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/integrated-analog/digital-to-analog-converter)

• * [1 x Zero-Cross Detector (ZCD)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/integrated-analog/zero-cross-detect)

• * [3 x Analog Comparators](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/integrated-analog/comparator)

•

• Timer/Counters* [1 x Timer/Counter type A (TCA)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/timer-peripheral#How%20Do%20Timers%20in%20AVR%20MCUs%20Operate?)

• * [3 x Timer/Counter type B (TCB)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/timer-peripheral#How%20Do%20Timers%20in%20AVR%20MCUs%20Operate?)

• * [1 x Timer/Counter type D (TCD) for control applications](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/timer-peripheral#How%20Do%20Timers%20in%20AVR%20MCUs%20Operate?)

•

• Communication* [3 x USART](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/communication-connectivity-peripherals)

• * [2 x SPI](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/communication-connectivity-peripherals)

• * [1 x I2C](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/communication-connectivity-peripherals)

•

• Built-in Safety Functions:* [Clock Failure Detection (CFD)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring/clock-failure-detect)

• * [Power-On Reset (POR)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring)

• * [Brown-Out-Detection (BOD)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring)

• * [Voltage Level Monitor (VLM)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring)

• * [Cyclic Redundancy Check (CRC) Scan](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring/cyclic-redundancy-check)

• * [Window Watchdog Timer with Window Mode (WWDT)](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/core-independent-and-analog-peripherals/safety-and-monitoring/windowed-watchdog-timer)

Description

[**AVR® DB Product Family**](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/avr-mcus/avr-db) [*Check out the code examples*](https://github.com/microchip-pic-avr-examples) The AVR® DB 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® DB family is designed to bring analog signal conditioning, real-time control, and multi-voltage operation 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 Analog Signal Conditioning (ASC) module includes three OPAMPs, which can form gain stages and filter functions allowing signal conditioning with down to zero external components. The Multi-Voltage I/O system allows safe bi-directional communication with systems running at a different voltage. The Event System, Configurable Custom Logic (CCL), along with intelligent analog peripherals like 12-bit differential ADC, Zero-Cross Detect (ZCD), 10-bit DAC together with the ASC and MVIO makes the AVR® DB family well suited for sensor applications, IoT end nodes, and other applications where signal conditioning or level-shifting is needed. **AVR32DB28** The AVR32DB28 microcontroller is part of the AVR® DB family featuring the AVR® processor with hardware multiplier, running at up to 24 MHz and with 32 KB Flash, 4 KB SRAM, and 512B of EEPROM in 28-pin packages. The AVR32DB28 will be available in SPDIP, SSOP, and SOIC package options. The AVR32DB28 product supports four Multi-Voltage I/O channels capable of bi-directional communication with external devices running at a higher or lower voltage than the MCU itself. Together with the ASE module consisting of two independent OPAMPs with an integrated feedback resistor network, it makes the AVR® DB a perfect device for board control, sensor applications, IoT end nodes, and other size-constrained applications. **Functional Safety Ready for Safety Critical Applications** **Our AVR DB family for**[safety-critical applications](https://www.microchip.com/en-us/products/microcontrollers-and-microprocessors/8-bit-mcus/functional-safety) targets both industrial and automotive products. We also offer the [MPLAB® XC8 Functional Safety Compiler License](https://www.microchip.com/en-us/development-tool/sw006021-fs), which is a TÜV SÜD-certified compiler package that supports 8-bit PIC® and AVR MCUs. Our AVR DB [ISO 26262](https://www.microchipdirect.com/product/FBP-AVR-DB-ISO26262) and [IEC 61508](https://www.microchipdirect.com/product/FBP-AVR-DB-IEC61508) functional safety packages come with documents such as FMEDA reports and safety manuals.