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Atmel Electronic Components Datasheet

ATMEGA32U2 Datasheet

8-bit Microcontroller

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Features
High Performance, Low Power AVR® 8-Bit Microcontroller
Advanced RISC Architecture
– 125 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
Non-volatile Program and Data Memories
– 8K/16K/32K Bytes of In-System Self-Programmable Flash
– 512/512/1024 EEPROM
– 512/512/1024 Internal SRAM
– Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
– Data retention: 20 years at 85C/ 100 years at 25C(1)
– Optional Boot Code Section with Independent Lock Bits
In-System Programming by on-chip Boot Program hardware-activated after
reset
True Read-While-Write Operation
– Programming Lock for Software Security
USB 2.0 Full-speed Device Module with Interrupt on Transfer Completion
– Complies fully with Universal Serial Bus Specification REV 2.0
– 48 MHz PLL for Full-speed Bus Operation : data transfer rates at 12 Mbit/s
– Fully independant 176 bytes USB DPRAM for endpoint memory allocation
– Endpoint 0 for Control Transfers: from 8 up to 64-bytes
– 4 Programmable Endpoints:
IN or Out Directions
Bulk, Interrupt and IsochronousTransfers
Programmable maximum packet size from 8 to 64 bytes
Programmable single or double buffer
– Suspend/Resume Interrupts
– Microcontroller reset on USB Bus Reset without detach
– USB Bus Disconnection on Microcontroller Request
Peripheral Features
– One 8-bit Timer/Counters with Separate Prescaler and Compare Mode (two 8-bit
PWM channels)
– One 16-bit Timer/Counter with Separate Prescaler, Compare and Capture Mode
(three 8-bit PWM channels)
– USART with SPI master only mode and hardware flow control (RTS/CTS)
– Master/Slave SPI Serial Interface
– Programmable Watchdog Timer with Separate On-chip Oscillator
– On-chip Analog Comparator
– Interrupt and Wake-up on Pin Change
On Chip Debug Interface (debugWIRE)
Special Microcontroller Features
– Power-On Reset and Programmable Brown-out Detection
– Internal Calibrated Oscillator
– External and Internal Interrupt Sources
– Five Sleep Modes: Idle, Power-save, Power-down, Standby, and Extended Standby
I/O and Packages
– 22 Programmable I/O Lines
– QFN32 (5x5mm) / TQFP32 packages
Operating Voltages
– 2.7 - 5.5V
Operating temperature
– Industrial (-40°C to +85°C)
Maximum Frequency
– 8 MHz at 2.7V - Industrial range
– 16 MHz at 4.5V - Industrial range
Note: 1. See “Data Retention” on page 6 for details.
8-bit
Microcontroller
with
8/16/32K Bytes
of ISP Flash
and USB
Controller
ATmega8U2
ATmega16U2
ATmega32U2
7799E–AVR–09/2012


Atmel Electronic Components Datasheet

ATMEGA32U2 Datasheet

8-bit Microcontroller

No Preview Available !

1. Pin Configurations
Figure 1-1. Pinout
ATmega8U2/16U2/32U2
XTAL1
(PC0) XTAL2
GND
VCC
(PCINT11 / AIN2 ) PC2
(OC.0B / INT0) PD0
(AIN0 / INT1) PD1
(RXD1 / AIN1 / INT2) PD2
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4
5
QFN32
21
20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
Reset (PC1 / dW)
PC6 (OC.1A / PCINT8)
PC7 (INT4 / ICP1 / CLKO)
PB7 (PCINT7 / OC.0A / OC.1C)
PB6 (PCINT6)
PB5 (PCINT5)
PB4 (T1 / PCINT4)
PB3 (PDO / MISO / PCINT3)
XTAL1
(PC0) XTAL2
GND
VCC
(PCINT11 /AIN2 ) PC2
(OC.0B / INT0) PD0
(AIN0 / INT1) PD1
(RXD1 / AIN1 / INT2) PD2
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4
5
TQFP32
21
20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
Reset (PC1 / dW)
PC6 (OC.1A / PCINT8)
PC7 (INT4 / ICP1 / CLKO)
PB7 (PCINT7 / OC.0A / OC.1C)
PB6 (PCINT6)
PB5 (PCINT5)
PB4 (T1 / PCINT4)
PB3 (PDO / MISO / PCINT3)
Note: The large center pad underneath the QFN package should be soldered to ground on the board to
ensure good mechanical stability.
1.1 Disclaimer
Typical values contained in this datasheet are based on simulations and characterization of
other AVR microcontrollers manufactured on the same process technology. Min and Max values
will be available after the device is characterized.
7799E–AVR–09/2012
2


Part Number ATMEGA32U2
Description 8-bit Microcontroller
Maker ATMEL
Total Page 30 Pages
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