Atmel ATAVRBFLY Data Sheet
-26
AVR Butterfly User Guide
4271C–AVR–04/05
3.10
Piezo element
A piezo element is used to be able to play sounds on the AVR Butterfly. The piezo is
connected to PORTB5 on the ATmega169. And using the PWM, one can get the differ-
ent frequencies required to play tunes.
connected to PORTB5 on the ATmega169. And using the PWM, one can get the differ-
ent frequencies required to play tunes.
Figure 3-21. Piezo Element
3.11
Battery
Model: CR2450
Nominal Voltage: 3.0 Volts
Nominal Capacity: 550 mAh (@0.2 mA Discharge Current, +23ºC)
Standard Discharge Current 0.2 mAh
Maximum recommended current under continuous discharge: 3 mA
Maximum recommended current under pulse discharge: 15 mA
Note:
Note:
DO NOT recharge, short-circuit, disassemble, deform, heat or place the battery
near a direct flame. This battery containsflammable materials such as lithium
and organic solvent and performing any of the above actions could cause it to
ignite explode or become damaged.
near a direct flame. This battery containsflammable materials such as lithium
and organic solvent and performing any of the above actions could cause it to
ignite explode or become damaged.
The battery is protected by a schottky diode, this will prevent recharging of the battery if
external power is applied to PORTB or PORTD on the AVR Butterfly.
external power is applied to PORTB or PORTD on the AVR Butterfly.