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AVR16EB32 Datasheet(PDF) 23 Page - Microchip Technology

Part # AVR16EB32
Description  AVR16EB32 Curiosity Nano
PDF  46 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

AVR16EB32 Datasheet(HTML) 23 Page - Microchip Technology

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AVR16EB32 Curiosity Nano
Hardware Implementation
 User Guide
© 2024 Microchip Technology Inc. and its subsidiaries
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



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