ATmega32U4 Atmel Corporation, ATmega32U4 Datasheet - Page 379
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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T
Note:
7766F–AVR–11/10
A
Symbol
I
V
I
t
Rusb
Vreg
CC
ACLK
ACID
ACIO
= -40°C to 85°C, V
1. "Max" means the highest value where the pin is guaranteed to be read as low
2. "Min" means the lowest value where the pin is guaranteed to be read as high
3. Although each I/O port can sink more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady state
4. Although each I/O port can source more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady
5. All DC Characteristics contained in this datasheet are based on simulation and characterization of other AVR microcon-
6. Values with “Power Reduction Register 1 - PRR1” disabled (0x00).
conditions (non-transient), the following must be observed:
ATmega16U4/ATmega32U4:
1.)The sum of all IOL, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2.)The sum of all IOL, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3.)The sum of all IOL, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
4.)The sum of all IOL, for ports F0-F7 should not exceed 100 mA.
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.
state conditions (non-transient), the following must be observed:
ATmega16U4/ATmega32U4:
1)The sum of all IOH, for ports A0-A7, G2, C4-C7 should not exceed 100 mA.
2)The sum of all IOH, for ports C0-C3, G0-G1, D0-D7 should not exceed 100 mA.
3)The sum of all IOH, for ports G3-G5, B0-B7, E0-E7 should not exceed 100 mA.
4)The sum of all IOH, for ports F0-F7 should not exceed 100 mA.
trollers manufactured in the same process technology. These values are preliminary values representing design targets, and
will be updated after characterization of actual silicon
Parameter
Power Supply Current
Power-down mode
Analog Comparator
Input Offset Voltage
Analog Comparator
Input Leakage Current
Analog Comparator
Propagation Delay
USB Series resistor
(external)
Regulator Output
Voltage
CC
= 2.7V to 5.5V (unless otherwise noted) (Continued)
(6)
Condition
Active 4MHz, V
(ATmega16U4/ATmega32U4)
Active 8MHz, V
(ATmega16U4/ATmega32U4)
Idle 4MHz, V
(ATmega16U4/ATmega32U4)
Idle 8MHz, V
(ATmega16U4/ATmega32U4)
WDT enabled, V
Regulator Disabled
WDT disabled, V
3V,Regulator Disabled
V
V
V
V
V
V
C
UVcc ≥ 4.0V, I≤80mA
or
UVcc ≥ 3.4V, I≤55mA
CC
in
CC
in
CC
CC
UCAP
= V
= V
= 5V
= 5V
= 2.7V
= 4.0V
= 1µF±20%,
CC
CC
/2
/2
CC
CC
CC
CC
= 3V
= 5V
CC
CC
= 3V
= 5V
= 3V,
=
(7)
(7)
,
Min.
-50
3.0
(5)
22±5%
Typ.
<10
<10
750
500
3.3
10
1
ATmega16/32U4
Max.
3.6
15
12
40
50
5
2
6
5
(5)
Units
mA
mA
mA
mA
mV
µA
µA
nA
ns
Ω
V
379
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