ATMEGA32U4-MUR Atmel, ATMEGA32U4-MUR Datasheet - Page 256
ATMEGA32U4-MUR
Manufacturer Part Number
ATMEGA32U4-MUR
Description
MCU AVR 16K FLASH 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
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
Company:
Part Number:
ATMEGA32U4-MUR
Manufacturer:
UCC
Quantity:
1 001
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21.4
21.5
7766F–AVR–11/10
Crystal-less operation
Design guidelines
Figure 21-6. Typical Self powered application with 3.0V to 3.6 I/O
To reduce external components count and BOM cost, the USB module can be configured to
operate in low-speed mode with internal RC oscillator as input source clock for the PLL. The
internal RC oscillator is factory calibrated to satisfy the USB low speed frequency accuracy
within the 0°C and -40°C temperature range.
For USB full-speed operation only external crystal oscillator or external source clock can be
used.
• 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
ATmega16/32U4
+/-
5%).
External 3.0V - 3.6V
Power Supply
256
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