AVR16EB32 datasheet(23/46 Pages) MICROCHIP

23 / 46 page

AVR16EB32 Curiosity Nano

Hardware Implementation

User Guide

DS50003605B - 23

Figure 4-4. AVR16EB32 Curiosity Nano SW0 Block Diagram

AVR16EB32 MCU

Level Shi er

"RC7"

J106

SW0

R103

PF6

Debugger

DBG2

Edge Connector

"DBG2"

"PF6"

U204

Tip: There is no externally connected pull-up resistor on the switch. Enable the

internal pull-up resistor on Pin PF6 to use it.

Table 4-3. Mechanical Switch Connection

AVR16EB32 Pin

Description

Shared Functionality

PF6

User switch (SW0)

Edge connector, On-board debugger

4.4

Power Supply

The USB port powers the board. The input power is delayed to allow USB cable oscillations to die

out. The delay is about 1 ms. VBUS is further limited to a 2 V/ms slew rate and is current limited to

500 mA by U202 (MIC2008).

Tip: Changing the values for C206 and R211 can alter the slew rate and current

limit set by U202.

The power supply consists of two LDO regulators, one to generate 3.3V for the on-board debugger

and an adjustable LDO regulator for the target AVR16EB32 microcontroller and its peripherals. The

voltage from a USB connector can vary between 4.4V and 5.25V (according to the USB specification)

and will limit the maximum voltage supplied to the target. The figure below shows the entire power

supply system on the AVR16EB32 Curiosity Nano.

Figure 4-5. Power Supply Block Diagram

VUSB

USB Type-C®

Connector

P3V3

Debugger

Regulator

VREG

Measure

Adjustable

Target Regulator

VBUS

I/O

On/Oﬀ

Adjust

On/Oﬀ

Debugger

Slew Rate- and

Current-Limit

I/O

Level

Shi er

Target

MCU

VTARGET

VLEVEL

I/O

"VTG"

"VBUS"

"VOFF"

GPIO Straps

Power Supply

Strap

Target Power

Strap

AVR16EB32 bảng dữ liệu(PDF) 23 Page - Microchip Technology

AVR16EB32 bảng dữ liệu(HTML) 23 Page - Microchip Technology

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

bảng dữ liệu tải về

Link URL