atmega32u4-16mu ATMEL Corporation, atmega32u4-16mu Datasheet - Page 7

• Manufacturer Part Number: atmega32u4-16mu
• Description: Atmega32u4 8-bit Avr Microcontroller With 32k Bytes Of Isp Flash And Usb Controller
• Manufacturer: ATMEL Corporation

2.2.12
2.2.13
2.2.14
2.2.15
2.2.16
2.2.17
2.2.18
3. About Code Examples
7766A–AVR–03/08
UCAP
VBUS
RESET
XTAL1
XTAL2
AVCC
AREF
USB Pads Internal Regulator Output supply voltage. Should be connected to an external capac-
itor (1µF).
USB VBUS monitor input.
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running. The minimum pulse length is given in
48. Shorter pulses are not guaranteed to generate a reset.
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
Output from the inverting Oscillator amplifier.
AVCC is the supply voltage pin (input) for all the A/D Converter channels. If the ADC is not used,
it should be externally connected to V
through a low-pass filter.
This is the analog reference pin (input) for the A/D Converter.
This documentation contains simple code examples that briefly show how to use various parts of
the device. Be aware that not all C compiler vendors include bit definitions in the header files
and interrupt handling in C is compiler dependent. Please confirm with the C compiler documen-
tation for more details.
These code examples assume that the part specific header file is included before compilation.
For I/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC", "CBI", and "SBI"
instructions must be replaced with instructions that allow access to extended I/O. Typically
"LDS" and "STS" combined with "SBRS", "SBRC", "SBR", and "CBR".
CC
. If the ADC is used, it should be connected to V
ATmega32U4
Table 8-1 on page
CC
7