SELECTION GUIDE
INFORMATION
Flyer
  Flash Microcontrollers With Integrated USB interface
Datasheet of Recommended Components

DataFlash memories:

DataFlash Summary
DataFlash Product Guide

AT45DB321D Datasheet
AT45DB642D Datasheet

  Related USB Devices
 

Flash Program /
Boot

64KBytes / 8KBytes
64KBytes / 8KBytes
128KBytes / 8KBytes
128KBytes / 8KBytes
RAM
4KBytes
4KBytes
8KBytes
8KBytes
EEPROM
2KBytes
2KBytes
4KBytes
4KBytes
In-System Programming
ISP/USB*
ISP/USB*
ISP/USB*
ISP/USB*
USB 2.0
Low/Full Speed
Low/Full Speed
Low/Full Speed
Low/Full Speed
Host/OTG
Yes
No
Yes
No
USB DPRAM
832Bytes
832Bytes
832Bytes
832Bytes
USB Endpoints
7
7
7
7
I/O Pins
48
48
48
48
LED outputs
-
-
-
-
UART
Yes
Yes
Yes
Yes
SPI
Yes
Yes
Yes
Yes
TWI
Yes
Yes
Yes
Yes
ADC
10b 8ch
10b 8ch
10b 8ch
10b 8ch
PCA
-
-
-
-
Timers
2x8b 2x16b
RTC
2x8b 2x16b
RTC
2x8b 2x16b
RTC
2x8b 2x16b
RTC
Watchdog
Yes Yes Yes Yes
PFD Yes Yes Yes Yes
POR
Yes
Yes
Yes
Yes
Other Features
JTAG OCD
JTAG OCD
JTAG OCD
JTAG OCD
Supply (V)
2.7-5.5V
2.7-5.5V
2.7-5.5V
2.7-5.5V
Max Speed (MHz)
8-16MHz
8-16MHz
8-16MHz
8-16MHz
Packages
TQFP64
VQFP64
QFN64
TQFP64
QFN64
QFN64
Starter & Evaluation Kits

* Factory programmed bootloader with API for In-Application Programming and complaying
with USB DFU (Device Firmware Upgrade) Class.
SPI for ISP with standard AVR tools

BRG: Baud Rate Generator, KBD: Keyboard, PFD: Power Fail Detect, POR: Power On Reset,
RTC:
Real Time Clock, SPI: Serial Peripherals Interface, PCA : Programmable Counter Array,
UART
: Universal Asynchronous Receiver and Transmitter, CRAM : Executable Code RAM area


© Atmel Corporation 2007