ATMEGA3290P-20AUR Atmel, ATMEGA3290P-20AUR Datasheet - Page 8
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
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Part Number
Manufacturer
Quantity
Price
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2.3.12
2.3.13
2.3.14
2.3.15
2.3.16
2.3.17
8021G–AVR–03/11
RESET
XTAL1
XTAL2
AVCC
AREF
LCDCAP
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running. The minimum pulse length is given in
Characteristics” on page
Input to the inverting Oscillator amplifier and input to the internal clock operating circuit.
Output from the inverting Oscillator amplifier.
AVCC is the supply voltage pin for Port F and the A/D Converter. It should be externally con-
nected to V
through a low-pass filter.
This is the analog reference pin for the A/D Converter.
An external capacitor (typical > 470nF) must be connected to the LCDCAP pin as shown in
ure
as a reservoir for LCD power (V
the time until V
23-2, if the LCD module is enabled and configured to use internal power. This capacitor acts
CC
, even if the ADC is not used. If the ADC is used, it should be connected to V
LCD
reaches its target value.
336. Shorter pulses are not guaranteed to generate a reset.
LCD
). A large capacitance reduces ripple on V
ATmega329P/3290P
”System and Reset
LCD
but increases
Fig-
CC
8
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