AT43USB325E-AU

Series:	AVR®
Packaging:	Tray
Part Status:	Obsolete
Applications:	Keyboard Controller
Core Processor:	AVR
Program Memory Type:	SRAM (16 kB)
Controller Series:	AT43USB
RAM Size:	512 x 8
Interface:	SPI, 3-Wire Serial
Number of I/O:	42
Voltage - Supply:	4.4 V ~ 5.25 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	64-LQFP
Supplier Device Package:	64-LQFP (10x10)
Base Part Number:	AT43USB325

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Introduction

AT43USB325E-AU is an Application Specific Microcontroller from Atmel Corporation specifically designed for low-cost, low power consumption and fast performance at less restrictive temperature ranges. It is suitable for applications such as multimedia, consumer and automotive electronics, industrial computing, and edge level data storage. It is an advanced 32-bit MCU with a 32-bit processor core, on-chip DMA, flash memory, and on-chip peripherals such as timing interface, LCD/display controller and USB 2.0 (Full Speed) controller.

Features

The AT43USB325E-AU features an Arm core Cortex M3 processor with a 16-bit wide flash memory and a 4-bit wide RAM. It allows users to create small, low cost and feature rich applications that can fit into the most restricted space and temperature ranges. The device also includes on-chip DMA controller and on-chip peripherals for LCD, timers and USB to simplify usage.

Capabilities

The AT43USB325E-AU is a 32-bit MCU with a 32-bit processor core that can support up to 32 Kbytes of on-chip flash memory and up to 4 Kbytes of RAM. It also features a powerful on-chip DMA controller and on-chip peripherals such as LCD, timer, and USB 2.0 (Full Speed) controller.

Applications

The AT43USB325E-AU is ideal for any low-cost, low-power, and fast performance application. Due to its advanced 32-bit processor core, on-chip flash memory, and on-chip peripherals, it is suitable for embedded multimedia, consumer, automotive, industrial computing, and edge level data storage applications.

Working Principle

The AT43USB325E-AU operates using a 32-bit ARM Cortex-M3 processing cores. The Cortex-M3 is a interrupt driven processor which operates in three modes: supervisor, privileged, and user. There are two independent buses to access the on-chip and off-chip memory, which allows the device to have multiple bus masters using the memory. The device also has an I/O register for configuration and access to the internal modules like DMA, LCD controller, and USB controller.The periperhal modules like LCD, timer, and USB controller work in concert with the Cortex-M3 processor and memory to allow communication with external devices. The USB controller works with the dedicated data lines and GPIOs to provide a physical interface to the USB bus. The timer module is used to generate interrupts and to measure accurate timing in hardware.

Conclusion

The AT43USB325E-AU is a cost-effective, low power, and high-performance microcontroller designed for embedded multimedia, consumer, automotive, industrial computing and edge level data storage applications. It operates with a 32-bit ARM Cortex-M3 processor core, on-chip DMA controller, on-chip peripherals, and flash memory. The on-chip peripherals, such as LCD, timer, and USB 2.0 (Full Speed) controller allow the device to communicate with external devices. With its advanced features, the AT43USB325E-AU is a great choice for the next generation of embedded applications. The device provides a cost-effective solution to achieve low-cost and low-power designs.

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