ATMEGA32U4-MUR Atmel, ATMEGA32U4-MUR Datasheet - Page 50

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ATMEGA32U4-MUR

Manufacturer Part Number
ATMEGA32U4-MUR
Description
MCU AVR 16K FLASH 16MHZ 44VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet

Specifications of ATMEGA32U4-MUR

Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
26
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
44-VQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA32U4-MUR
Manufacturer:
UCC
Quantity:
1 001
8.0.3
7766F–AVR–11/10
Power-on Reset
Figure 8-1.
Table 8-1.
Notes:
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
POR circuit can be used to trigger the start-up Reset, as well as to detect a failure in supply
voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
Symbol
V
V
V
V
t
CCRR
RST
POR
POT
RST
BODLEVEL [2..0]
1. The Power-on Reset will not work unless the supply voltage has been below V
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
V
Reset signal
VCC Rise Rate to ensure internal Power_on
Reset signal
Minimum pulse width on RESET Pin
RESET Pin Threshold Voltage
CC
Table
Reset Logic
Reset Characteristics
Start Voltage to ensure internal Power-on
8-1. The POR is activated whenever V
Pull-up Resistor
JTAG Reset
Register
FILTER
SPIKE
CKSEL[3:0]
Power-on Reset
Reset Circuit
SUT[1:0]
USB Reset
Watchdog
Brown-out
Detection
Oscillator
Generator
Circuit
Clock
CK
Register (MCUSR)
(1)
MCU Status
DATA BUS
Delay Counters
Condition
5V, 25°C
CC
is below the detection level. The
ATmega16/32U4
Min
-0.1
Vcc
0.3
0.2
TIMEOUT
Typ
400
1.4
1.3
POT
+0.1
Max
0.85
Vcc
2.3
2.3
(falling)
Units
V/ms
ns
V
V
V
V
50

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