Atmel Evaluation Board AT32UC3C-EK AT32UC3C-EK 데이터 시트
제품 코드
AT32UC3C-EK
AVR32919
32151A-AVR-09/10
4 Hardware Description
This section presents the hardware blocks of the Atmel AT32UC3C-EK hardware
design. Each hardware block is described with:
design. Each hardware block is described with:
• an overview of the hardware block,
• a location in the schematics document,
• AT32UC3C-specific information (when relevant),
• all possible hardware configurations of the block and available test points.
In each block description, the components reference and schematic can be found in
The AT32UC3C-EK Schematics and Assembly bottom/ top view
• a location in the schematics document,
• AT32UC3C-specific information (when relevant),
• all possible hardware configurations of the block and available test points.
In each block description, the components reference and schematic can be found in
The AT32UC3C-EK Schematics and Assembly bottom/ top view
4.1 Power Supply
The power supply block of the AT32UC3C-EK is in charge of distributing power to all
components of the board.
components of the board.
4.1.1 Overview
Figure 4-1. AT32UC3C-EK Power Supply Logical View
Auto-Switch
JACK
12V
to
5v
LED
(power)
VCC5
VDDIN
VDDIO
VDDANA
VCC3
Power Supply
usb user
usb vcp
5V to 3V
The AT32UC3C-EK can be powered from 4 different sources: 2x USB mini AB plug
(5V input): labeled “USB USER” (J21) and “USB VCP” (J27) and 2x external power
supply J1 jack connector or the J2 2-pins headers (DC 12V ±10%).
(5V input): labeled “USB USER” (J21) and “USB VCP” (J27) and 2x external power
supply J1 jack connector or the J2 2-pins headers (DC 12V ±10%).
The AT32UC3C-EK will automatically switch to the more accurate power source if it
senses voltage on it (external power supply is defined as the more accurate power
source, then VBUS from “USB VCP” and the less accurate power source is VBUS
from “USB USER”).
senses voltage on it (external power supply is defined as the more accurate power
source, then VBUS from “USB VCP” and the less accurate power source is VBUS
from “USB USER”).
These inputs go through an external 3.3V switch mode regulator which delivers
supplies to the rest of the board with a 3.3V voltage.
supplies to the rest of the board with a 3.3V voltage.
The power indicator LED green D3, labeled “POWER”, indicates if the 3.3V from the
external regulator is present.
external regulator is present.