8-bit Microcontrollers
AVR® DB Family of Microcontrollers
Summary
Microchip’s AVR® DB family brings unprecedented analog capability and
real-time control functionality to the popular and powerful AVR core. The AVR
DB combines integrated level shifters and three highly configurable op amps
with the latest Core Independent Peripherals (CIP) to create a device that not
only excels as a standalone processor, but is also a perfect companion MCU
in designs with multiple power domains.
Coming in 28- to 64-pin packages, with up to 128 KB Flash and operating at
up 24 MHz across the full supply voltage range of 1.8V to 5.5V the new AVR
DB MCUs are ready to meet the needs of a diverse range of applications.
Designed for Demanding Analog
Applications
Intelligent analog peripherals, like 12-bit differential ADC,
op amps, Zero-Cross Detect (ZCD), 10-bit DAC and Multi
Voltage I/O make the AVR DB family ideal for analog signal
conditioning, interfacing sensors and IoT end nodes. The
family uses the latest Core Independent Peripherals with lowpower features and 5V operation for increased noise immunity
in harsh environments.
Multi Voltage I/O (MVIO)
The AVR DB includes a unique MVIO option on PORT C. This
means that Port C can be interfaced to a different voltage
than the rest of the device. This second voltage can be either
higher or lower than the main Vdd and level shifting will be
completely transparent for the user. This allows seamless
bi-directional communication with devices or modules running
on a different voltage domain without using external level
shifters, saving cost and board space.
www.microchip.com/8bit
Operational Amplifiers (OPAMP)
The AVR DB includes 3 highly configurable operational amplifiers that are perfect for analog signal conditioning. Each op
amp has its own optional feedback resistor network allowing
a wide range of configurations, many without the need for
external components. Inverting and non-inverting amplifiers,
filters and instrumentation amplifiers can easily be configured
without writing code, by using Microchip’s graphical code
building tools MPLAB® Code Configurator (MCC) and Atmel
START code builder.
The op amps are also supported by MPLAB Mindi™
Analog Simulator which allow full analog simulation of the
operation and performance of the analog signal conditioning
configuration.
Functional Safety
The AVR-DB family is recommended
for safety critical applications targeting both industrial and automotive
products (IEC 61508 and ISO 26262).
Necessary documentation such as FMEDA report and Safety
Manual can be provided on request. Safety certified development tools are also available for this product. Please contact
your local Microchip sales office or your distributor for more
information.
High-Performance Analog
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The 12-bit differential Analog-to-Digital Converter (ADC) with
conversion speeds of 130 ksps provides accurate and timely
analog signal acquisition. Triggering signals and notifications can
be transmitted to other peripherals without CPU intervention,
enabling robust and deterministic response to system events.
The 10-bit DAC output can either be available on an external
pin or it can be used to generate an adjustable reference voltage for the Analog Comparator (AC). The AVR-DA features up
to three ACs, each having a dedicated DAC reference.
16-bit Real-Time Clock and Periodic Interrupt Timer
Configurable Custom Logic (CCL) peripheral
Up to 10-channel Peripheral Event System
Configurable, internally generated Reference Voltage
USART/SPI/dual-mode TWI
Available with up to 54 I/O
Available in 28-, 32-, 48- and 64-pin packages
1.8V to 5.5V operating voltage range
–40˚ to +125˚C operating temperature range
Get Started Now
All AVR MCUs are fully supported by our comprehensive
development ecosystem, which includes MPLAB X Integrated
Development Environment (IDE) and Studio—our free IDEs
with built-in GCC compiler, and our powerful MPLAB Code
Configurator and Atmel START code configuration tools
generating factory-validated C-code to help you get your
design started correctly. Get started today at www.microchip.
com/mcc or start.atmel.com. We also offer the MPLAB XC
Compilers Functional Safety Compiler License, which is a TÜV
SÜD certified compiler package that supports 8-bit PIC® and
AVR microcontrollers.
Key Features
• Internal 24 MHz oscillator
• External high-frequency crystal oscillator (XOSCHF) with
clock failure detection (CFD)
• Up to 128 KB of Flash memory
• 12-bit differential ADC with up to 22 channels
• Up to three op amps
• Multi Voltage I/O on Port C (8 lines)
• 10-bit DAC
• Analog Comparator with scalable reference input
• Up to three Zero Cross Detectors
• Built in safety functions: POR, BOR, VLM and Cyclic
Redundancy Check (CRC) scan
SRAM (KB)
Pins
I/O pins
12-bit differential ADC
(channels)
Analog Comparator
OPAMPs
MVIO Pins
Zero Cross Detectors
Event System
channels
Window WDT
16-bit Timer/Counters
12-bit Timer/Counter
Temperature Grade
Options (°C)
512
16
28
22
1(10) 4(1)
3
2
8
1
8
1
1(4) 3/2/1
4
1
Industrial, 85
Extended, 125
SPDIP SOIC SSOP
AVR128DB32
24
128
512
16
32
26
1(14) 4(1)
3
2
8
1
8
1
1(4) 3/2/2
4
1
Industrial, 85
Extended, 125
TQFP VQFN
AVR128DB48
24
128
512
16
48
40
1(18) 4(1)
3
3
8
2
10
1
1(6) 5/2/2
5
1
Industrial, 85
Extended, 125
TQFP VQFN
AVR128DB64
24
128
512
16
64
54
1(22) 4(1)
3
3
8
3
10
1
1(6) 6/2/2
6
1
Industrial, 85
Extended, 125
TQFP VQFN
AVR64DB28
24
64
512
8
28
22
1(10) 4(1)
3
2
8
1
8
1
1(4) 3/2/1
4
1
Industrial, 85
Extended, 125
SPDIP SOIC SSOP
1
Industrial, 85
Extended, 125
TQFP VQFN
TQFP VQFN
AVR64DB32
24
64
512
8
32
26
1(14) 4(1)
3
2
8
1
8
1
1(4) 3/2/2
4
Packages
EEPROM (B)
128
USART/SPI/I2C
Flash (KB)
24
Configurable Custom
Logic/(LUTs)
Max CPU speed (MHz)
AVR128DB28
10-bit DAC (output)
Product
The AVR128DB48 Curiosity Nano Evaluation kit www.microchip.
com/EV35L43A is the ideal platform for rapid prototyping with the
AVR DB MCUs connection seamlessly to MPLAB X IDE and Studio.
AVR64DB48
24
64
512
8
48
40
1(18) 4(1)
3
3
8
2
10
1
1(6) 5/2/2
5
1
Industrial, 85
Extended, 125
AVR64DB64
24
64
512
8
64
54
1(22) 4(1)
3
3
8
3
10
1
1(6) 6/2/2
6
1
Industrial, 85
Extended, 125
TQFP VQFN
AVR32DB28
24
32
512
4
28
22
1(10) 4(1)
3
2
8
1
8
1
1(4) 3/2/1
4
1
Industrial, 85
Extended, 125
SPDIP SOIC SSOP
AVR32DB32
24
32
512
4
32
26
1(14) 4(1)
3
2
8
1
8
1
1(4) 3/2/2
4
1
Industrial, 85
Extended, 125
TQFP VQFN
AVR32DB48
24
32
512
4
48
40
1(18) 4(1)
3
3
8
2
10
1
1(6) 5/2/2
5
1
Industrial, 85
Extended, 125
TQFP VQFN
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mentioned herein are property of their respective companies.
© 2020, Microchip Technology Incorporated. All Rights Reserved. 10/20
DS00003689A
www.microchip.com/8bit