atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 275
atmega32u4-16mu
Manufacturer Part Number
atmega32u4-16mu
Description
Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA32U4-16MU.pdf
(431 pages)
- Current page: 275 of 431
- Download datasheet (6Mb)
22.3.3
7766A–AVR–03/08
Design guidelines
Figure 22-6. Typical Self powered application with 3.0V to 3.6 I/O
• Serial resistors on USB Data lines must have 22 Ohms value (
• Traces from the input USB receptable (or from the cable connection in the case of a tethered
• Voltage transient / ESD suppressors may also be used to prevent USB pads to be damaged
• U
• A 10µF capacitor is highly recommended on VBUS line
device) to the USB microcontroller pads should be as short as possible, and follow differential
traces routing rules (same length, as near as possible, avoid via accumulation).
by external disturbances.
cap
capacitor should be 1µF (
VBUS
UVSS
UDP
UDM
UID
Rs=22
Rs=22
1µF
+/-
10%) for correct operation.
UCAP
VBUS
UGND
D+
D-
UID
UVCC
XTAL1
XTAL2
AVCC
GND
VCC
GND
+/-
5%).
ATmega32U4
External 3.0V - 3.6V
Power Supply
275
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