ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 378
ATmega32U4
Manufacturer Part Number
ATmega32U4
Description
Manufacturer
Atmel Corporation
Specifications of ATmega32U4
Flash (kbytes)
32 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)
3.3
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
4
Output Compare Channels
12
Input Capture Channels
2
Pwm Channels
8
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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29. Electrical Characteristics
29.1
29.2
T
7766F–AVR–11/10
A
Operating Temperature.................................... -40°C to +85°C
Storage Temperature ..................................... -65°C to +150°C
Voltage on any Pin except RESET and VBUS
with respect to Ground
Voltage on RESET with respect to Ground......-0.5V to +13.0V
Voltage on VBUS with respect to Ground..........-0.5V to +6.0V
Maximum Operating Voltage ............................................ 6.0V
DC Current per I/O Pin ............................................... 40.0 mA
DC Current
Symbol
V
V
V
V
V
V
V
V
I
I
R
R
IL
IH
IL
IL1
IL2
IH
IH1
IH2
OL
OH
RST
PU
= -40°C to 85°C, V
Absolute Maximum Ratings*
DC Characteristics
Parameter
Input Low
Voltage,Except XTAL1
and Reset pin
Input Low Voltage,
XTAL1 pin
Input Low Voltage,
RESET pin
Input High Voltage,
Except XTAL1 and
RESET pins
Input High Voltage,
XTAL1 pin
Input High Voltage,
RESET pin
Output Low Voltage
Output High Voltage
Input Leakage
Current I/O Pin
Input Leakage
Current I/O Pin
Reset Pull-up Resistor
I/O Pin Pull-up Resistor
V
CC
and GND Pins................................ 200.0 mA
CC
(8)
.............................-0.5V to V
= 2.7V to 5.5V (unless otherwise noted)
(3)
(4)
,
,
Condition
V
V
V
V
V
V
I
I
I
I
V
(absolute value)
V
(absolute value)
OL
OL
OH
OH
CC
CC
CC
CC
CC
CC
CC
CC
= 10mA, V
= 5mA, V
= -10mA, V
= -5mA, V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 2.7V - 5.5V
= 5.5V, pin low
= 5.5V, pin high
CC
CC
CC
CC
CC
= 3V
+0.5V
= 3V
= 5V
= 5V
*NOTICE:
0.2V
0.7V
0.9V
(LVTTL)
Min.
-0.5
-0.5
-0.5
CC
4.2
2.3
30
20
2)
+0.9V
CC
CC
(5)
(2)
(2)
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
(
Typ.
ATmega16/32U4
V
V
V
0.1V
0.1V
(LVTTL)
0.2V
Max.
0.1V
CC
CC
CC
0.7
0.5
50
60
1
1
+ 0.5
+ 0.5
+ 0.5
CC
CC
CC
(1)
(5)
(1)
(1)
-
Units
kΩ
kΩ
µA
µA
V
V
V
V
V
V
V
V
378
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