ATMEGA325A-MU Atmel, ATMEGA325A-MU Datasheet - Page 327
![IC MCU AVR 32K FLASH 64VQFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA325A-MU
Manufacturer Part Number
ATMEGA325A-MU
Description
IC MCU AVR 32K FLASH 64VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA325A-MU
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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27.6.2
27.7
27.8
Table 27-17. Asynchronous External Interrupt Characteristics
8285B–AVR–03/11
Symbol
t
INT
Brown-out Detection
External Interrupts Characteristics
ATmega325A/325PA/3250A/3250PA/645A/645P/6450A/6450PA
revision A and B
Parameter
Minimum pulse width for asynchronous external interrupt
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Table 27-15. Reset, Brown-out, and Internal Voltage Reference Characteristics,
Note:
Table 27-16. BODLEVEL Fuse Coding
Note:
Symbol
V
SR
POT
ON
BODLEVEL 2...0 Fuses
1. The Power-on Reset will not work unless the supply voltage has been below V
1. V
this is the case, the device is tested down to V
antees that a Brown-Out Reset will occur before V
operation of the microcontroller is no longer guaranteed. The test is performed using
BODLEVEL = 110, 101, and 100.
BOT
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-on Slope Rate
T
A
may be below nominal minimum operating voltage for some devices. For devices where
111
110
101
100
011
010
001
000
= -40°C to 85°C
Min V
(1)
1.7
2.5
4.1
BOT
Condition
(1)
CC
= V
Typ V
CC
1.8
2.7
4.3
BOT
drops to a voltage where correct
BOD Disabled
BOT
Reserved
during the production test. This guar-
Min.
0.05
0.01
0.7
Min
Max V
Typ
Typ
1.0
0.9
50
2.0
2.9
4.5
BOT
Max
Max
1.4
1.3
4.5
POT
(falling)
Units
Units
V/ms
Units
V
ns
V
327
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