ATmega16U4 Atmel Corporation, ATmega16U4 Datasheet - Page 431
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ATmega16U4
Manufacturer Part Number
ATmega16U4
Description
Manufacturer
Atmel Corporation
Specifications of ATmega16U4
Flash (kbytes)
16 Kbytes
Pin Count
44
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
14
Hardware Qtouch Acquisition
No
Max I/o Pins
26
Ext Interrupts
13
Usb Transceiver
1
Usb Speed
Full Speed
Usb Interface
Device
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
2.1
Eeprom (bytes)
512
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
4
Output Compare Channels
12
Input Capture Channels
2
Pwm Channels
8
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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Manufacturer
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7766F–AVR–11/10
29 Electrical Characteristics .................................................................... 378
30 Typical Characteristics ........................................................................ 386
31 Register Summary ............................................................................... 408
32 Instruction Set Summary .................................................................... 412
33 Ordering Information ........................................................................... 415
34 Packaging Information ........................................................................ 417
35 Errata ..................................................................................................... 419
28.6Parallel Programming ..........................................................................................352
28.7Serial Downloading .............................................................................................360
28.8Serial Programming Pin Mapping ........................................................................361
28.9Programming via the JTAG Interface ..................................................................365
29.1Absolute Maximum Ratings* ...............................................................................378
29.2DC Characteristics ..............................................................................................378
29.3External Clock Drive Waveforms .........................................................................380
29.4External Clock Drive ............................................................................................380
29.5Maximum speed vs. V
29.62-wire Serial Interface Characteristics .................................................................381
29.7SPI Timing Characteristics ..................................................................................383
29.8Hardware Boot EntranceTiming Characteristics ..................................................384
30.1Active Supply Current ..........................................................................................386
30.2Idle Supply Current ..............................................................................................389
30.3Power-down Supply Current ...............................................................................391
30.4Power-save Supply Current ................................................................................392
30.5Pin Pull-Up ..........................................................................................................393
30.6Pin Driver Strength ..............................................................................................394
30.7Pin Threshold and Hysteresis .............................................................................397
30.8BOD Threshold ....................................................................................................400
30.9Internal Oscilllator Speed ....................................................................................402
30.10Current Consumption of Peripheral Units ..........................................................405
30.11Current Consumption in Reset and Reset Pulsewidth ......................................407
33.1ATmega16U4 ......................................................................................................415
33.2ATmega32U4 ......................................................................................................416
34.1TQFP44 ...............................................................................................................417
34.2QFN44 .................................................................................................................418
CC ............................................................................................................................. 380
ATmega16/32U4
vii
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