ATMEGA328P-AU Atmel, ATMEGA328P-AU Datasheet - Page 47

MCU AVR 32K FLASH 32TQFP

ATMEGA328P-AU

Manufacturer Part Number
ATMEGA328P-AU
Description
MCU AVR 32K FLASH 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar

Specifications of ATMEGA328P-AU

Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATMEGA32x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
23
Number Of Timers
3
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
20MHz
Total Internal Ram Size
2KB
# I/os (max)
23
Number Of Timers - General Purpose
3
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
1.8V
Instruction Set Architecture
RISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
32
Package Type
TQFP
Controller Family/series
AVR MEGA
No. Of I/o's
23
Eeprom Memory Size
1KB
Ram Memory Size
2KB
Cpu Speed
20MHz
Rohs Compliant
Yes
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ATMEGA328P-20AU
ATMEGA328P-20AU
Q3790246

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA328P-AU
Manufacturer:
KINGBRIGHT
Quantity:
37 000
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
1 250
Part Number:
ATMEGA328P-AU
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA328P-AU
Manufacturer:
AT
Quantity:
1 000
Part Number:
ATMEGA328P-AU
Manufacturer:
AT
Quantity:
400
Company:
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
35 000
Company:
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
99 800
Part Number:
ATMEGA328P-AU
Manufacturer:
ATMEL
Quantity:
1 011
Company:
Part Number:
ATMEGA328P-AU - MCU
Manufacturer:
ATMEL
Quantity:
4 800
Part Number:
ATMEGA328P-AUR
Manufacturer:
Atmel
Quantity:
10 000
Part Number:
ATMEGA328P-AUR
Manufacturer:
ATMEL
Quantity:
1 000
10. System Control and Reset
10.1
10.2
8271C–AVR–08/10
Resetting the AVR
Reset Sources
During reset, all I/O Registers are set to their initial values, and the program starts execution
from the Reset Vector. For ATmega168A/168PA/328/328P the instruction placed at the Reset
Vector must be a JMP – Absolute Jump – instruction to the reset handling routine. For the
ATmega 48A/48PA and ATmega88A/88PA, the instruction placed at the Reset Vector must be
an RJMP – Relative Jump – instruction to the reset handling routine. If the program never
enables an interrupt source, the Interrupt Vectors are not used, and regular program code can
be placed at these locations. This is also the case if the Reset Vector is in the Application sec-
t i o n w h i l e t h e I n t e r r u p t V e c t o r s a r e i n t h e B o o t s e c t i o n o r v i c e v e r s a
(ATmega88A/88PA/168A/168PA/328/328P only). The circuit diagram in
shows the reset logic.
circuitry.
The I/O ports of the AVR are immediately reset to their initial state when a reset source goes
active. This does not require any clock source to be running.
After all reset sources have gone inactive, a delay counter is invoked, stretching the internal
reset. This allows the power to reach a stable level before normal operation starts. The time-out
period of the delay counter is defined by the user through the SUT and CKSEL Fuses. The dif-
ferent selections for the delay period are presented in
The ATmega48A/48PA/88A/88PA/168A/168PA/328/328P has four sources of reset:
• Power-on Reset. The MCU is reset when the supply voltage is below the Power-on Reset
• External Reset. The MCU is reset when a low level is present on the RESET pin for longer than
• Watchdog System Reset. The MCU is reset when the Watchdog Timer period expires and the
• Brown-out Reset. The MCU is reset when the supply voltage V
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
threshold (V
the minimum pulse length.
Watchdog System Reset mode is enabled.
threshold (V
POT
BOT
).
) and the Brown-out Detector is enabled.
Table 28-12 on page 323
defines the electrical parameters of the reset
”Clock Sources” on page
CC
is below the Brown-out Reset
Figure 10-1 on page 48
27.
47

Related parts for ATMEGA328P-AU