ATAVRZRAVEN Atmel, ATAVRZRAVEN Datasheet - Page 4

• Manufacturer Part Number: ATAVRZRAVEN
• Description: Development Tools & Eval/Demo Boards
• Manufacturer: Atmel

Specifications of ATAVRZRAVEN

• Silicon Manufacturer: Atmel
• Silicon Core Number: ATmega1280, ATmega1280R231 And ATmega128RZAV
• Kit Contents: 2x AVR Raven Boards, USB Stick, PC Software
• Silicon Family Name: AVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.3 LCD
3.4 Speaker
3.5 Microphone
3.6 Serial Dataflash®
4
AVR2016
The LCD found on the AVRRAVEN module is a full custom 160-segment display
tailored for the RZRAVEN kit (See Figure 3-1 for a quick reference). It contains a 7
segments text area; four segment number area and numerous handy symbols. In
particular pay attention to the bird looking symbol. It is symbolizing the two black
scouting ravens of Norse god Odin; Hugin (Thought) and Munin (Memory). The saga
says that they flew around the world and reported news back to Odin at night.
Underneath the raven segment’s “eye” there is a red LED capable of soft-blinking;
this may be used to indicate the AVRRAVEN’s search for “news” on the air interface.
A full segment map can be found in Appendix C and in the schematics folder in the
compressed archive file accompanying this application note. The LCD is driven
directly from the connected ATmega3290P.
Figure 3-1 AVRRAVEN - LCD Segments
An 8 Ω speaker is provided. The ATmega3290P controls all audio. The signal source
is the TIMER1’s PWM output and the signal is shaped via a low-pass filter and
amplified by a Class-D amplifier. Pulling PORTE7 low activates the active filter and
providing a PWM signal on PORTB5 activates the amplifier.
The AVRRAVEN’s microphone is connected to the ATmega3290P ADC channel 0.
The signal is amplified and low-pass filtered. Pulling PORTE7 low activates the
microphone circuit.
A 16-Mbits Atmel Serial Dataflash (AT45D161D) is connected to the ATmega3290P’s
Serial Peripheral Interface (SPI). This storage is used for safe firmware images,
sounds and general-purpose parameters. See the firmware documentation for an
overview of occupied sectors, and those available to the end user. Even with a couple
of safe firmware images for the two microcontrollers there is plenty space left for the
end user. Please note that the serial Dataflash will operate properly when the voltage
is above 2.5 Volts while the rest of the design will operate down to 1.8Volts
8117C-AVR-03/08