ATMEGA3290P-20AUR Atmel, ATMEGA3290P-20AUR Datasheet - Page 44
![MCU AVR 32K FLASH 20MHZ 64TQFP](/photos/6/70/67048/313-100-tqfp_sml.jpg)
ATMEGA3290P-20AUR
Manufacturer Part Number
ATMEGA3290P-20AUR
Description
MCU AVR 32K FLASH 20MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA3290P-20AUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
69
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 44 of 427
- Download datasheet (9Mb)
10. System Control and Reset
10.1
10.2
8021G–AVR–03/11
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. The instruction placed at the Reset Vector must be a JMP – Absolute
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 section while the Interrupt
Vectors are in the Boot section or vice versa. The circuit diagram in
shows the reset logic.
parameters of the reset 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 ATmega329P/3290P has five 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 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
• JTAG AVR Reset. The MCU is reset as long as there is a logic one in the Reset Register, one
threshold (V
the minimum pulse length.
Watchdog is enabled.
threshold (V
of the scan chains of the JTAG system. Refer to the section
scan” on page 254
POT
BOT
).
) and the Brown-out Detector is enabled.
for details.
”System and Reset Characteristics” on page 336
”Clock Sources” on page
ATmega329P/3290P
”IEEE 1149.1 (JTAG) Boundary-
CC
is below the Brown-out Reset
”Reset Logic” on page 45
defines the electrical
28.
44
Related parts for ATMEGA3290P-20AUR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATmega3290](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA3290-16AU](/photos/6/70/67048/313-100-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 100TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA3290-16AI](/photos/6/70/67048/313-100-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 100TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA3290-16AUR](/photos/6/70/67048/313-100-tqfp_tmb.jpg)
Part Number:
Description:
MCU AVR 32K FLASH 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![atmega3290v](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Atmega3290 Avr 8-bit Microcontroller With In-system Programmable Flash
Manufacturer:
ATMEL Corporation
Datasheet:
![ATmega329](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA329-16AU](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA329-16MU](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 64-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA329-16AI](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA329-16MI](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 32K 16MHZ 64-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA329-16AUR](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
MCU AVR 32K FLASH 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA329-16MUR](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 32K FLASH 16MHZ 64QFN
Manufacturer:
Atmel
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet: