Microchip Technology Inc
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ATmega328

Status: In Production

Overview
Documents
Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The high-performance Microchip 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1KB EEPROM, 2KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts,serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts.

By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed.

Parametrics
Name
Value
Program Memory Type
Flash
Program Memory Size (KB)
32
CPU Speed (MIPS/DMIPS)
20
SRAM Bytes
2,048
Data EEPROM/HEF (bytes)
1024
Digital Communication Peripherals
1-UART, 2-SPI, 1-I2C
Capture/Compare/PWM Peripherals
1 Input Capture, 1 CCP, 6PWM
Timers
2 x 8-bit, 1 x 16-bit
Number of Comparators
1
Temperature Range (C)
-40 to 85
Operating Voltage Range (V)
1.8 to 5.5
Pin Count
32

Documents

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Application Notes

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Device Documentation

12/10/2016
2468KB

User Guides

08/02/2017
312KB

White Papers

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
ATSTK600 Kit
ATSTK600 Kit ( ATSTK600 )

A complete starter kit and development system for the 8-bit and 32-bit AVR microcontrollers that gives designers a quick start to develop code on the AVR, with advanced features for prototyping and testing new designs.

The AVR device connects to the STK600 using an innovative routing and socketcard sandwich system, which routes the signals from the device to the appropriate...

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Power Debugger kit
Power Debugger kit ( ATPOWERDEBUGGER )

Power Debugger is a powerful development tool for debugging and programming AVR microcontrollers using UPDI, JTAG, PDI, debugWIRE, aWire, TPI or SPI target interfaces and ARM® Cortex®-M based SAM microcontrollers using JTAG or SWD target interfaces.

In addition the Power Debugger has two independent current sensing channels for measuring and optimizing the power consumption of

...

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Atmel-ICE Full Kit
Atmel-ICE Full Kit ( ATATMEL-ICE )

Atmel-ICE is a powerful development tool for debugging and programming ARM® Cortex®-M based SAM and AVR microcontrollers with on-chip debug capability.

Atmel-ICE supports:

  • Programming and on-chip debugging of all AVR 32-bit MCUs on both JTAG and aWire interfaces
  • Programming and on-chip debugging of all AVR
...

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Similar Devices

Product
Pins
Flash (KB)
RAM (B)
Price 5K
Notes
16
2
0
$0.97
 
44
8
0
$0.62
 
64
32
2,048
 
 
64
128
4,096
$8.25
 
100
128
8,192
$7.72
 
64
128
8,192
$6.28
 
44
128
16,384
$3.46
 
44
128
16,384
$3.84
 
64
128
4,096
$3.97
 
44
16
1,024
$3.22
 
44
16
1,024
$2.22
 
44
16
1,024
$2.63
 
44
16
1,024
$2.45
 
44
16
1,024
$3.04
 
32
16
1,024
$2.07
 
32
16
1,024
$1.15
 
32
16
1,024
 
 
32
16
1,024
$2.28
 
32
16
1,024
$1.14
 
32
16
1,024
$1.80
 
32
16
1,024
$0.87
 
64
16
1,024
$2.37
 
64
16
1,024
$2.87
 
64
16
1,024
$2.61
 
64
16
1,024
$3.23
 
44
16
1,024
$2.00
 
100
256
8,192
$8.61
 
64
256
8,192
$8.51
 
44
32
2,048
$3.91
 
44
32
2,048
$2.51
 
44
32
2,048
$3.38
 
44
32
2,048
$2.77
 
44
32
2,048
$3.79
 
44
32
2
$1.33
 
64
32
2,048
$3.29
 
100
32
2,048
$3.47
 
100
32
2,048
$3.04
 
100
32
2,048
$3.47
 
100
32
2,048
$3.35
 
64
32
2,048
$2.78
 
64
32
2,048
$3.35
 
64
32
2,048
$2.91
 
32
32
2,048
$1.33
 
32
32
2,048
$1.46
 
32
32
2,048
$3.09
 
32
32
2,048
 
 
64
32
2,048
$3.64
 
100
32
2,048
$4.14
 
100
32
2,048
$3.29
 
100
32
2,048
$4.14
 
44
32
2,048
$3.65
 
64
32
2,048
$2.91
 
64
32
2,048
$3.64
 
64
32
2,048
$3.23
 
44
32
2,048
$2.26
 
32
4
512
$1.31
 
32
4
512
$0.77
 
32
4
512
$1.46
 
32
4
512
$0.89
 
32
4
512
$1.80
 
32
4
512
$0.76
 
64
64
4,096
$5.66
 
100
64
8,192
$5.65
 
44
64
4,096
$3.77
 
44
64
4,096
$3.04
 
44
64
4,096
$3.87
 
44
64
4,096
$3.54
 
44
64
4,096
$4.89
 
64
64
4,096
$4.31
 
100
64
4,096
$4.96
 
100
64
4,096
$3.01
 
100
64
4,096
$3.38
 
64
64
4,096
$3.51
 
64
64
4,096
$3.86
 
64
64
4,096
$5.26
 
100
64
4,096
$6.03
 
100
64
4,096
$3.38
 
100
64
4,096
$3.76
 
64
64
4,096
$3.86
 
64
64
4,096
$4.21
 
64
64
4,096
$3.16
 
32
8
1,024
$1.70
 
32
8
1,024
$1.84
 
32
8
1,024
$0.92
 
32
8
1,024
 
 
32
8
1,024
$1.90
 
32
8
1,024
$0.95
 
32
8
1,024
$2.35
 
32
8
1,024
$0.81
 
32
8
1,024
$1.39
 
6
1
32
$0.24
 
8
1
32
$0.41
 
14
1
32
$0.45
 
8
1
64
$0.68
 
8
1
64
$0.38
 
20
16
1,024
$0.69
 
20
16
512
$0.95
 
20
16
512
$2.01
 
14
2
128
$0.39
 
20
2
128
$1.15
 
20
2
128
$0.48
 
14
2
128
$1.15
 
14
2
128
$0.48
 
14
2
128
 
 
8
2
128
$0.54
 
8
2
128
$1.40
 
20
2
0
$1.30
 
20
2
128
$0.61
 
20
2
128
$1.34
 
28
2
0
$1.29
 
6
0.5
32
$0.24
 
20
4
256
$0.54
 
20
4
256
$0.56
 
20
4
256
$1.36
 
14
4
256
$1.20
 
14
4
256
$0.64
 
14
4
256
$0.51
 
14
4
256
$1.52
 
8
4
256
$0.61
 
8
4
256
 
 
20
4
256
$1.20
 
20
4
256
$0.64
 
20
4
256
 
 
32
4
256
$0.63
 
6
0.5
32
$0.24
 
32
8
512
$0.73
 
14
8
512
$1.39
 
14
8
512
$0.73
 
14
8
512
$0.56
 
14
8
512
$1.95
 
8
8
512
$0.69
 
8
8
512
$1.93
 
20
8
512
$1.45
 
20
8
512
$0.75
 
20
8
512
$1.38
 
20
8
512
$1.06
 
20
8
0
 
 
32
8
512
$0.63
 
32
8
512
$1.24
 
6
1
32
$0.24
 

RoHS Information

Part Number
Device Weight
Shipping Weight
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
ATMEGA328-PU
2.087500
3.733333
28
SPDIP
.300in
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-PU
2.087500
3.733333
28
SPDIP
.300in
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-PN
2.087500
3.733333
28
SPDIP
.300in
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-ANR
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-AN
0.338300
0.800000
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-AU
0.338300
0.800000
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-AUR
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-AN
0.338300
0.800000
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-AUR
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328-AUR
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328-AU
0.338300
0.800000
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-15AZ
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-AU
0.338300
0.800000
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-ANR
0.338300
0.497500
32
TQFP
7x7x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-MU
0.060800
0.448980
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-MUR
0.061300
0.075200
32
VQFN
5x5x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328-MU
0.060800
0.448980
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-MN
0.061300
0.512245
32
VQFN
5x5x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328-MMHR
0.040600
0.123333
28
VQFN
4x4x1mm
NiPdAu
e4
Rohs icon
efup china icon
ATMEGA328P-MMH
0.040600
0.489796
28
VQFN
4x4x1mm
NiPdAu
e4
Rohs icon
efup china icon
ATMEGA328-MMH
0.040600
0.489796
28
VQFN
4x4x1mm
NiPdAu
e4
Rohs icon
efup china icon
ATMEGA328P-MUR
0.060800
0.061000
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-MMHR
0.040600
0.123333
28
VQFN
4x4x1mm
NiPdAu
e4
Rohs icon
efup china icon
ATMEGA328PB-MNR
0.061300
0.075200
32
VQFN
5x5x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328-MUR
0.060800
0.061000
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-MNR
0.060800
0.061000
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328PB-MU
0.061300
0.512245
32
VQFN
5x5x0.9mm
Matte Tin
e3
Rohs icon
efup china icon
ATMEGA328P-MN
0.060800
0.448980
32
VQFN
5x5x1mm
Matte Tin
e3
Rohs icon
efup china icon
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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