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STK525 Datasheet(PDF) 8 Page - ATMEL Corporation |
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STK525 Datasheet(HTML) 8 Page - ATMEL Corporation |
8 / 39 page Using the STK525 2-8 STK525 Hardware User Guide 7608A–AVR–04/06 2.2.2 Power Supply Setting Table 2-1 . Power Supply (1) Setting Notes: 1. Caution: The STK500 has its own “ON/OFF” switch Vcc Source Jumper position VCC power supply value Comments View VBUS 5 VBUS (4,7V to 5.0V) This is the default configuration. This should be used for a typical USB device “bus powered” application. In this mode, the STK525 is powered directly from the USB bus, and no other external power supply is required. REG 5 5V This configuration can be used for a USB “self powered” device application” or when operating has a USB host. To use this configuration an external power supply must be connected to J6 connector. REG 3.3 3.3V This configuration allows the STK525 to be used in a 3V range application. This configuration can be used with both device or host mode USB applications. To use this configuration an external power supply must be connected to J6 connector. STK Depends on STK500 VTG setting This configuration allows the STK525 to be used with an STK500 board. In this mode, the STK525 power supply is generated and configured according to the “VTG” parameter of the STK500 (1). VCC Source Reg 5 Reg 3.3 VBUS 5 STK VCC Source Reg 5 Reg 3.3 VBUS 5 STK VCC Source Reg 5 Reg 3.3 VBUS 5 STK VCC Source Reg 5 Reg 3.3 VBUS 5 STK |
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