ATmega32U2 Atmel Corporation, ATmega32U2 Datasheet - Page 266

• Manufacturer Part Number: ATmega32U2
• Manufacturer: Atmel Corporation

Specifications of ATmega32U2

• Flash (kbytes): 32 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 22
• Ext Interrupts: 20
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 5
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

26.3
26.4
26.4.1
Table 26-1.
26.4.2
7799D–AVR–11/10
Factory
Calibration
User
Calibration
5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcon-
6. Values with “PRR1 – Power Reduction Register 1” disabled (0x00).
7. As specified in the USB Electrical chapter, the D+/D- pads can withstand voltages down to -1V applied through a 39Ω resis-
8. All IOs Except XTAL1 and Reset pins
Speed Grades
Clock Characteristics
Calibrated Internal RC Oscillator Accuracy
External Clock Drive Waveforms
trollers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon
tor (in series with the external 39Ω resistor).
Calibration Accuracy of Internal RC Oscillator
Maximum frequency is depending on V
V
Figure 26-1. Maximum Frequency vs. V
Figure 26-2. External Clock Drive Waveforms
CC
7.3 - 8.1 MHz
curve is linear between 2.7V < V
Frequency
8.0 MHz
16 MHz
8 MHz
V
IL1
V
IH1
2.7V
2.7V - 5.5V
V
3V
CC
Safe Operating Area
CC
CC.
< 4.5V.
CC
As shown in
, ATmega8U2/16U2/32U2
4.5V
ATmega8U2/16U2/32U2
Temperature
-40°C - 85°C
Figure
25°C
5.5V
26-1, the Maximum Frequency vs.
Calibration Accuracy
±10%
±1%
266