ATmega328 Atmel Corporation, ATmega328 Datasheet - Page 451

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ATmega328

Manufacturer Part Number
ATmega328
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega328

Flash (kbytes)
32 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
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
Yes
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
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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30.5.11
8271D–AVR–05/11
Internal Oscillator Speed
Figure 30-223.ATmega168A: Watchdog Oscillator Frequency vs. Temperature
Figure 30-224.ATmega168A: Watchdog Oscillator Frequency vs. V
122
120
118
116
114
112
110
121
119
117
115
113
111
1.5
-40
-30
ATmega48A/PA/88A/PA/168A/PA/328/P
2
-20
-10
2.5
0
3
10
Temperature (°C)
20
V
CC
3.5
(V)
30
40
4
50
4.5
60
CC
70
5
80
5.5
90
-40 °C
2.7 V
3.3 V
5.5 V
25 °C
85 °C
451

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