ATMEGA32U4-MUR Atmel, ATMEGA32U4-MUR Datasheet - Page 259

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ATMEGA32U4-MUR

Manufacturer Part Number
ATMEGA32U4-MUR
Description
MCU AVR 16K FLASH 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet

Specifications of ATMEGA32U4-MUR

Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA32U4-MUR
Manufacturer:
UCC
Quantity:
1 001
21.7
21.7.1
21.7.2
7766F–AVR–11/10
Power modes
Idle mode
Power down
UESTAX.6
UESTAX.5
UEINTX.6
UEINTX.4
UEINTX.3
UEINTX.2
UEINTX.1
UEINTX.0
UNDERFI
NAKOUTI
STALLEDI
OVERFI
RXOUTI
RXSTPI
NAKINI
TXINI
Figure 21-10. USB Endpoint Interrupt vector sources
Each endpoint has 8 interrupts sources associated with flags, and each source can be enabled
or not to trigger the corresponding endpoint interrupt. If, for an endpoint, at least one of the
sources is enabled to trigger interrupt, the corresponding event(s) will make the program branch
to the USB Endpoint Interrupt vector. The user may determine the source (endpoint) of the inter-
rupt by reading the UEINT register, and then handle the event detected by polling the different
flags.
In this mode, the CPU core is halted (CPU clock stopped). The Idle mode is taken wether the
USB controller is running or not. The CPU “wakes up” on any USB interrupts.
In this mode, the oscillator is stopped and halts all the clocks (CPU and peripherals). The USB
controller “wakes up” when:
• the WAKEUPI interrupt is triggered
• the VBUSTI interrupt is triggered
UEIENX.7
UEIENX.6
UEIENX.4
UEIENX.3
UEIENX.2
UEIENX.1
UEIENX.0
RXOUTE
STALLEDE
RXSTPE
FLERRE
TXSTPE
NAKINE
TXINE
UEINT.X
Endpoint 0
EPINT
Endpoint 1
Endpoint 2
Endpoint 3
Endpoint 4
Endpoint 5
Endpoint 6
ATmega16/32U4
Interrupt Vector
USB Endpoint
259

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