Atmel ATEVK525 Betriebsanweisung PDF herunterladen (Seite 6)

Using the ATEVK525

2-6 ATEVK525 Mass Storage Board for AVR

7740B–AVR–03/08

2.1.2 Power supply

The ATEVK525 must be powered with a voltage between 2.8 and 3.5V.

Before connecting or powering the boards, you must ensure the power supply

configuration on the motherboard.

The voltage must be set to 3.3V (microcontroller I/O levels), and this voltage must be

present on the VTG pins of the EXPAND connectors.

On the STK525, the configuration must be:

– JP4 closed (ties 3.3V to VTG pins)

– VCC SOURCE set to REG 3.3 mode (powers microcontroller I/O at 3.3V)

Figure 2-2 . Configuration to set on STK525

NAND Flash (MT29F2G08AACWP) current consumption is 1mA maximum in idle state,

and can reach 30mA (15mA typ.) during access operations (read/write/erase). For the

SD/MMC card consumption, please refer to your SD/MMC card datasheet.

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Atmel ATEVK525 Betriebsanweisung Seite 6