ATMEGA325P-20MUR Atmel, ATMEGA325P-20MUR Datasheet - Page 8

• Manufacturer Part Number: ATMEGA325P-20MUR
• Description: MCU AVR 32K FLASH 20MHZ 64QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA325P-20MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• 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

2.3.12
2.3.13
2.3.14
2.3.15
2.3.16
8
ATmega325P/3250P
RESET
XTAL1
XTAL2
AVCC
AREF
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
Characterizations” 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.
CC
, even if the ADC is not used. If the ADC is used, it should be connected to V
308. Shorter pulses are not guaranteed to generate a reset.
”System and Reset
8023F–AVR–07/09
CC