ATMEGA32U4-AUR Atmel, ATMEGA32U4-AUR Datasheet - Page 138
ATMEGA32U4-AUR
Manufacturer Part Number
ATMEGA32U4-AUR
Description
MCU AVR 16K FLASH 16MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA16U4-MU.pdf
(433 pages)
Specifications of ATMEGA32U4-AUR
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-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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15. 10-bit High Speed Timer/Counter4
15.1
15.2
7766F–AVR–11/10
Features
Overview
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Timer/Counter4 is a general purpose high speed Timer/Counter module, with three independent
Output Compare Units, and with enhanced PWM support.
The Timer/Counter4 features a high resolution and a high accuracy usage with the lower pres-
caling opportunities. It can also support three accurate and high speed Pulse Width Modulators
using clock speeds up to 64 MHz. In PWM mode Timer/Counter4 and the output compare regis-
ters serve as triple stand-alone PWMs with non-overlapping, non-inverted and inverted outputs.
The enhanced PWM mode allows to get one more accuracy bit while keeping the frequency
identical to normal mode (a PWM 8 bits accuracy in enhanced mode outputs the same fre-
quency that a PWM 7 bits accuracy in normal mode). Similarly, the high prescaling opportunities
make this unit useful for lower speed functions or exact timing functions with infrequent actions.
A lock feature allows user to update the PWM registers and
A simplified block diagram of the Timer/Counter4 is shown in
of the I/O pins, refer to
register and bit locations are listed in the
Up to 10-Bit Accuracy
Three Independent Output Compare Units
Clear Timer on Compare Match (Auto Reload)
Glitch Free, Phase and Frequency Correct Pulse Width Modulator (PWM)
Enhanced PWM mode: one optional additional accuracy bit without effect on output frequency
Variable PWM Period
Independent Dead Time Generators for each PWM channels
Synchronous update of PWM registers
Five Independent Interrupt Sources (TOV4, OCF4A, OCF4B, OCF4D, FPF4)
High Speed Asynchronous and Synchronous Clocking Modes
Separate Prescaler Unit
“Pinout ATmega16U4/ATmega32U4” on page
“Register Description” on page
Figure
ATmega16/32U4
15-1. For actual placement
3. The device-specific I/O
162.
138
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