ATmega329A Atmel Corporation, ATmega329A Datasheet - Page 354

• Manufacturer Part Number: ATmega329A
• Manufacturer: Atmel Corporation

Specifications of ATmega329A

• Flash (kbytes): 32 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 100
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

29.6.2
29.7
29.8
Table 29-18. Asynchronous External Interrupt Characteristics
8284D–AVR–6/11
Symbol
t
INT
Brown-out Detection
External Interrupts Characteristics
ATmega329A/329PA/3290A/3290PA/649A/649P/6490A/6490PA
revision A and B
Parameter
Minimum pulse width for asynchronous external interrupt
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
Table 29-16. Reset, Brown-out, and Internal Voltage Reference Characteristics,
Note:
Table 29-17. 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
111
110
101
100
011
010
001
000
may be below nominal minimum operating voltage for some devices. For devices where
= -40°C to 85°C
Min. V
(1)
1.7
2.5
4.1
BOT
Condition
(1)
CC
Typ V
= V
CC
1.8
2.7
4.3
BOT
BOD Disabled
drops to a voltage where correct
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
Units
V/ms
V
ns
V
354