NUC505-YO2T datasheet(73/130 Pages) NUVOTON

73 / 130 page

NUC505

July. 26, 2018

Page 73 of 130

Rev.1.08

6.2.3

System Power-on Setting

The power-on setting is used to configure the chip to enter the specified state when the chip is

powered up or reset. Since each pin of power-on setting has an internal pulled-up resistor during

reset period, if the application needs to set the configuration to

“0”, the proper pull-down must be

added for the corresponding configuration pins.

PB.4

PB.3

PA.10

PA.9

Description

Boot from Internal MCP SPI Flash

SYS_BOOTSET[3:0]

Boot from USB

SYS_BOOTSET[3:0]

Boot from External SPI Flash

SYS_BOOTSET[3:0]

Boot from ICP Mode

SYS_BOOTSET[3:0]

SWD/ICE Mode with Internal SPI Flash

SYS_BOOTSET[3:0]

SWD/ICE Mode with External SPI Flash

SYS_BOOTSET[3:0]

Table 6.2-1 System Power-on Setting Guide

6.2.4

System Power Distribution

In this chip, power distribution is divided into five segments:



Audio CODEC power from AVDDCODEC, AVDDHP, and AVSSHP provides the power for

audio CODEC operation.



Analog-to-Digital converter (ADC) power from AVDDADC and AVSSADC provides the

power for ADC operation.



Digital power from VDD and VSS supplies the power to the internal regulator which

provides a fixed 1.2 V power for digital operation and I/O pins.



USB transceiver power from AVDDUSB offers the power for operating the USB

transceiver.



RTC power from VBAT provides the power for RTC and 80 bytes backup registers.

The outputs of internal voltage regulators, LDO and VDD, require an external capacitor which

should be located close to the corresponding pin. Analog power (AVDDCODEC and AVDDADC) should

be the same voltage level of the digital power (VDD). The following figure shows the power

distribution of the NuMicro

® NUC505.

NUC505-YO2T Folha de dados(PDF) 73 Page - Nuvoton Technology Corporation

NUC505-YO2T Folha de dados(HTML) 73 Page - Nuvoton Technology Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Folha de dados Download

Ligação URL