ATmega16U2 Atmel Corporation, ATmega16U2 Datasheet - Page 267

• Manufacturer Part Number: ATmega16U2
• Manufacturer: Atmel Corporation

Specifications of ATmega16U2

• Flash (kbytes): 16 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: 21
• 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): 0.5
• 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: 2
• Output Compare Channels: 5
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

26.4.3
26.5
Table 26-3.
Note:
7799D–AVR–11/10
Symbol
V
V
V
V
t
t
V
CCRR
t
I
RST
BOD
HYST
POR
POT
BG
BG
BG
System and Reset Characteristics
The POR will not work unless the supply voltage has been below VPOT (falling)
External Clock Drive
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
V
V
Minimum pulse width on RESET Pin
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
Bandgap reference voltage
Bandgap reference start-up time
Bandgap reference current consumption
Reset, Brown-out and Internal Voltage Reference Characteristics
CC
CC
Start Voltage to ensure internal Power-on Reset signal
Rise Rate to ensure internal Power_on Reset signal
Table 26-2.
Note:
Symbol
1/t
Δ
t
t
t
t
t
CHCX
CLCH
CHCL
CLCL
CLCX
t
CLCL
CLCL
All DC Characteristics contained in this datasheet are based on simulation and characterization of
other AVR microcontrollers manufactured in the same process technology. These values are pre-
liminary values representing design targets, and will be updated after characterization of actual
silicon.
Parameter
External Clock Drive
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
Change in period from
one clock cycle to the
next
(Note:)
Min.
125
50
50
0
V
CC
V
Condition
CC
5V, 25°C
=2.7-5.5V
5.5V
= 2.7V -
ATmega8U2/16U2/32U2
-
-
Max.
1.6
1.6
8
2
Min
-0.1
1.0
0.3
Min.
62.5
25
25
0
V
CC
Typ
400
=4.5-5.5V
1.4
1.3
1.1
50
40
10
Max.
0.5
0.5
16
2
Max
2.3
2.3
0.1
1.2
70
Units
Units
MHz
V/ms
mV
µA
ns
ns
ns
μs
μs
%
ns
ns
µs
V
V
V
V
267