ATmega328 Atmel Corporation, ATmega328 Datasheet - Page 564

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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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8271D–AVR–05/11
26 Self-Programming the Flash, ATmega 48A/48PA ............................. 271
27 Boot Loader Support – Read-While-Write Self-Programming ......... 280
28 Memory Programming ......................................................................... 297
29 Electrical Characteristics .................................................................... 317
30 Typical Characteristics ........................................................................ 332
26.1Overview .............................................................................................................271
26.2Addressing the Flash During Self-Programming .................................................272
26.3Register Description ............................................................................................278
27.1Features ..............................................................................................................280
27.2Overview .............................................................................................................280
27.3Application and Boot Loader Flash Sections .......................................................280
27.4Read-While-Write and No Read-While-Write Flash Sections ..............................281
27.5Boot Loader Lock Bits .........................................................................................283
27.6Entering the Boot Loader Program ......................................................................284
27.7Addressing the Flash During Self-Programming .................................................285
27.8Self-Programming the Flash ................................................................................285
27.9Register Description ............................................................................................295
28.1Program And Data Memory Lock Bits .................................................................297
28.2Fuse Bits .............................................................................................................298
28.3Signature Bytes ...................................................................................................301
28.4Calibration Byte ...................................................................................................302
28.5Page Size ............................................................................................................302
28.6Parallel Programming Parameters, Pin Mapping, and Commands .....................303
28.7Parallel Programming ..........................................................................................305
28.8Serial Downloading .............................................................................................312
29.1Absolute Maximum Ratings* ...............................................................................317
29.2DC Characteristics ..............................................................................................317
29.3Speed Grades .....................................................................................................322
29.4Clock Characteristics ...........................................................................................323
29.5System and Reset Characteristics ......................................................................324
29.6SPI Timing Characteristics ..................................................................................325
29.7Two-wire Serial Interface Characteristics ............................................................327
29.8ADC Characteristics ............................................................................................329
29.9Parallel Programming Characteristics .................................................................330
30.1ATmega48A Typical Characteristics ...................................................................333
ATmega48A/PA/88A/PA/168A/PA/328/P
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