参数资料
型号: AT91SAM9X35-EK
厂商: Atmel
文件页数: 36/95页
文件大小: 0K
描述: KIT EVAL FOR AT91SAM9X35
标准包装: 1
系列: AT91SAM
类型: MCU
适用于相关产品: AT91SAM9X35
所含物品: 板,线缆,电源
Evaluation Kit Hardware
4.3.3.2
Power Supplies
The EK Board features one adjustable LDO. It accepts DC 5V power input and outputs a regulated
+3.3V to most other circuits on the board through four 3.3V rails.
VDDPIO0
VDDPIO1
VDDANA
VDDISI
This LDO is enabled through a dual FET scheme. The processor can assert SHDN (which is a VDDBU-
powered I/O) to shut down the LDO to enter the so-called backup mode. The regulator on CM board is
also shut down by the action of the SHDN signal.
If the 3V battery is mounted on J5, both CM and EK boards can be woken up by action on the BP2 but-
ton, which drives the WKUP signal (also a VDDBU-powered I/O).
Figure 4-18. EK Board Power Management
Evaluation Kit (EK) User Guide
4-25
11115A–ATARM–27-Jul-11
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