AVR128DB28/32/48/64
AVR
®
DB Family
Introduction
The AVR128DB28/32/48/64 microcontrollers of the AVR
®
DB family of microcontrollers are using the AVR
®
CPU with
hardware multiplier running at clock speeds up to 24 MHz. They come with 128 KB of Flash, 16 KB of SRAM, and
512 bytes of EEPROM. The microcontrollers are available in 28-, 32-, 48- and 64- pin packages. The AVR
®
DB
family uses the latest technologies from Microchip with a flexible and low-power architecture, including Event System,
accurate analog subsystems, and advanced digital peripherals.
AVR
��
DB Family Overview
The figure below shows the AVR DB devices, laying out pin count variants and memory sizes:
• Vertical migration is possible without code modification, as these devices are fully pin and feature compatible.
• Horizontal migration to the left reduces the pin count and therefore the available features.
Figure 1. AVR
®
DB Family Overview
Pins
Flash
Devices described in this data sheet
Devices described in other data sheets
AVR64DB28
AVR128DB28
AVR32DB28
AVR128DB32 AVR128DB48 AVR128DB64
AVR64DB32 AVR64DB48 AVR64DB64
AVR32DB32 AVR32DB48
28 48 64
32
32 KB
64 KB
128 KB
The name of a device in the AVR DB family is decoded as follows:
© 2020 Microchip Technology Inc.
Preliminary Datasheet
DS40002247A-page 1
Figure 2. AVR
®
DB Device Designations
Memory Overview
The following table shows the memory overview of the entire family, but the further documentation describes only the
AVR128DB28/32/48/64 devices.
Table 1. Memory Overview
Devices
AVR32DB28
AVR32DB32
AVR32DB48
AVR64DB28
AVR64DB32
AVR64DB48
AVR64DB64
AVR128DB28
AVR128DB32
AVR128DB48
AVR128DB64
Flash memory 32 KB 64 KB 128 KB
SRAM 4 KB 8 KB 16 KB
EEPROM 512B 512B 512B
User row 32B 32B 32B
Peripheral Overview
The following table shows the peripheral overview of the entire AVR DB family, but the further documentation
describes only the AVR128DB28/32/48/64 devices.
Table 2. Peripheral Overview
Feature
AVR32DB28
AVR64DB28
AVR128DB28
AVR32DB32
AVR64DB32
AVR128DB32
AVR32DB48
AVR64DB48
AVR128DB48
AVR64DB64
AVR128DB64
Pins 28 32 48 64
Max. frequency (MHz) 24 24 24 24
16-bit Timer/Counter type A (TCA) 1 1 2 2
16-bit Timer/Counter type B (TCB) 3 3 4 5
12-bit Timer/Counter type D (TCD) 1 1 1 1
AVR128DB28/32/48/64
© 2020 Microchip Technology Inc.
Preliminary Datasheet
DS40002247A-page 2