102010026 Seeed Studio

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 8-bit Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM (1) Data retention: 20 years at 85 C/ 100 years at 25C Optional Boot Code Section with Independent Lock Bits Microcontroller In-System Programming by on-chip Boot Program hardware-activated after reset with True Read-While-Write Operation Programming Lock for Software Security 8/16/32K Bytes USB 2.0 Full-speed Device Module with Interrupt on Transfer Completion Complies fully with Universal Serial Bus Specification REV 2.0 of ISP Flash 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 and USB 4 Programmable Endpoints: IN or Out Directions Controller Bulk, Interrupt and IsochronousTransfers Programmable maximum packet size from 8 to 64 bytes Programmable single or double buffer Suspend/Resume Interrupts ATmega8U2 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 ATmega16U2 PWM channels) One 16-bit Timer/Counter with Separate Prescaler, Compare and Capture Mode (three 8-bit PWM channels) ATmega32U2 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 (-40C to +85C) 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. 7799ESAVR09/2012 ATmega8U2/16U2/32U2 1. Pin Configurations Figure 1-1. Pinout 32 31 30 29 28 27 26 25 Reset (PC1 / dW) XTAL1 1 24 (PC0) XTAL2 PC6 (OC.1A / PCINT8) 2 23 GND PC7 (INT4 / ICP1 / CLKO) 3 22 PB7 (PCINT7 / OC.0A / OC.1C) VCC 21 4 QFN32 (PCINT11 / AIN2 ) PC2 PB6 (PCINT6) 20 5 (OC.0B / INT0) PD0 PB5 (PCINT5) 6 19 (AIN0 / INT1) PD1 7 18 PB4 (T1 / PCINT4) (RXD1 / AIN1 / INT2) PD2 PB3 (PDO / MISO / PCINT3) 8 17 9110 11 1231415 16 32 31 30 29 28 27 26 25 XTAL1 24 Reset (PC1 / dW) 1 PC6 (OC.1A / PCINT8) (PC0) XTAL2 2 23 GND PC7 (INT4 / ICP1 / CLKO) 22 3 VCC PB7 (PCINT7 / OC.0A / OC.1C) 4 21 TQFP32 (PCINT11 /AIN2 ) PC2 PB6 (PCINT6) 5 20 (OC.0B / INT0) PD0 6 PB5 (PCINT5) 19 (AIN0 / INT1) PD1 PB4 (T1 / PCINT4) 7 18 (RXD1 / AIN1 / INT2) PD2 8 17 PB3 (PDO / MISO / PCINT3) 9110 11 1231415 16 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. 2 7799ESAVR09/2012 (TXD1 / INT3) PD3 AVCC UVCC (INT5/ AIN3) PD4 D- (XCK / AIN4 / PCINT12) PD5 (RTS / AIN5 / INT6) PD6 D+ UGND (CTS / HWB / AIN6 / T0 / INT7) PD7 (SS / PCINT0) PB0 UCAP PC4 (PCINT10) (SCLK / PCINT1) PB1 (PDI / MOSI / PCINT2) PB2 PC5 ( PCINT9/ OC.1B) (TXD1 / INT3) PD3 AVCC (INT5/ AIN3) PD4 UVCC (XCK AIN4 / PCINT12) PD5 D- (RTS / AIN5 / INT6) PD6 D+ / HWB / AIN6 / T0 / INT7) PD7 UGND (SS / PCINT0) PB0 UCAP PC4 (PCINT10) (SCLK / PCINT1) PB1 (PDI / MOSI / PCINT2) PB2 PC5 ( PCINT9/ OC.1B)