Atmel AT90USB162, User Manual

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embeddedglow.com DBAT90USB162 Enhanced
Development Board User’s Manual
1.2. FEATURES

Flexible power
– 3.3 V or 5 V from built-in voltage regulator, USB bus or
external 3.0 V to 5.5 V;

All MCU I/O pins are accessible;

Headers for MCU header board
– allows use of several MCUs (holding different
firmware) with one development board;

100-mil extension header for connection to universal or breadboards, or direct
interfacing with other devices, providing access to all I/O pins and virtually all
signals;

Dedicated headers for some signals: USB D-, D+, VBUS; RST/DW; HWB;
EXTCLK, LED1, BUT1;

Flexible I/O connections
– virtually any 100 mil universal or breadboard can be
attached using various connectors
– allows using the board for more than one
project;

USB full speed (12 Mbps) Device mode supported;

Type B and Mini USB connectors;

Built-in 0.9..16 MHz crystal (default 8 MHz);

Internal or external clock;

Optional transient voltage suppression for USB data lines;

Reset (RST) button;

Hardware boot (HWB) button
– allows forcing bootloader (stock Atmel
®
or third-
party) execution at reset (see AT90USB82/AT90USB162 datasheet)
– allows
MCU programming via USB without external programmer. I/O pin is still useable
for other purposes;

Detachable user button (BUT1)
– general use button and/or used for debugging
purposes. Can be disconnected to free I/O pin;

Detachable user LED (LED1)
– general use LED and/or used for debugging
purposes. Can be disconnected to free I/O pin;

FR-4 1.5 mm PCB with all terminals and components clearly marked, accepting
TQFP-32, 7x7 mm body size, 0.8 mm lead pitch, and QFN-32, 5x5 mm body
size, 0.5 mm lead pitch;

ISP (6-pin) and JTAG (10-pin) connectors, both supporting in-circuit
programming and debugging via debugWIRE;

Switchable insulation resistors for all ISP pins (SCK, MOSI, MISO) and for HWB
pin.