ATMEGA16U1 データシートの表示（PDF） - Atmel Corporation

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ATMEGA16U1

8-bit Microcontroller with 16/32K Bytes of ISP Flash and USB Controller

Atmel Corporation 

2.2.11 UVCC

2.2.12 UCAP

2.2.13 VBUS

2.2.14 RESET

2.2.15 XTAL1

2.2.16 XTAL2

2.2.17 AVCC

2.2.18 AREF

ATmega16U4/ATmega32U4

USB Pads Internal Regulator Input supply voltage.

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 Table 8-1 on page

50. 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 VCC. If the ADC is used, it should be connected to VCC

through a low-pass filter.

This is the analog reference pin (input) for the A/D Converter.

7

7766E–AVR–04/10

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