ATMEGA32U4-AU Atmel, ATMEGA32U4-AU Datasheet - Page 297

MCU AVR 32K FLASH 16MHZ 44-TQFP

ATMEGA32U4-AU

Manufacturer Part Number
ATMEGA32U4-AU
Description
MCU AVR 32K FLASH 16MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA32U4-AU

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
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2.5 KB
Interface Type
SPI/TWI/USART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
26
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
12-ch x 10-bit
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
16MHz
Total Internal Ram Size
2.5KB
# I/os (max)
26
Number Of Timers - General Purpose
5
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
44
Package Type
TQFP
Controller Family/series
AVR MEGA
No. Of I/o's
26
Eeprom Memory Size
1KB
Ram Memory Size
2.5KB
Cpu Speed
16MHz
Rohs Compliant
Yes
For Use With
ATSTK524 - KIT STARTER ATMEGA32M1/MEGA32C1ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA32U4-16AU
ATMEGA32U4-16AU

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA32U4-AU
Manufacturer:
FREESCALE
Quantity:
125
Part Number:
ATMEGA32U4-AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA32U4-AU
Manufacturer:
MICROCHIP
Quantity:
200
Part Number:
ATMEGA32U4-AUR
Manufacturer:
Atmel
Quantity:
10 000
24.4.1
7766F–AVR–11/10
Differential Channels
Figure 24-6. ADC Timing Diagram, Auto Triggered Conversion
Figure 24-7. ADC Timing Diagram, Free Running Conversion
Table 24-1.
When using differential channels, certain aspects of the conversion need to be taken into
consideration.
Differential conversions are synchronized to the internal clock CK
clock frequency. This synchronization is done automatically by the ADC interface in such a way
that the sample-and-hold occurs at a specific phase of CK
user (i.e., all single conversions, and the first free running conversion) when CK
take the same amount of time as a single ended conversion (13 ADC clock cycles from the next
prescaled clock cycle). A conversion initiated by the user when CK
Condition
Sample & Hold
(Cycles from Start of Convention)
Conversion Time
(Cycles)
Cycle Number
ADC Clock
Trigger
Source
ADATE
ADIF
ADCH
ADCL
ADC Conversion Time
Prescaler
Reset
MUX and REFS
Update
1
2
3
Sample &
Hold
4
Conversion
5
First
14.5
25
6
7
One Conversion
8
Cycle Number
ADC Clock
ADSC
ADIF
ADCH
ADCL
9
Conversion
Single Ended
10
Conversion
Complete
Conversion,
Complete
One Conversion
Normal
11
11
1.5
13
12
ADC2
12
13
13
ATmega16/32U4
. A conversion initiated by the
ADC2
Next Conversion
1
Sign and MSB of Result
Sign and MSB of Result
LSB of Result
ADC2
LSB of Result
2
Auto Triggered
MUX and REFS
Update
is high will take 14 ADC
Next Conversion
Convertion
equal to half the ADC
1
Prescaler
Reset
3
13.5
Sample & Hold
2
2
4
ADC2
is low will
297

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