Microchip Technology ATMEGA328-MU, 8bit AVR Microcontroller, 20MHz, 32 kB Flash, 32-Pin QFN/MLF

  • RS Stock No. 131-0269
  • Mfr. Part No. ATMEGA328-MU
  • Manufacturer Microchip
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
Product Details

ATmega328 8-Bit megaAVR Microcontrollers

The Atmel ATmega328 Microcontroller is an 8-bit megaAVR device based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle the ATmega328 achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and speed.

Microcontroller Features

20 MHz Max. Operating Frequency
Up to 20 MIPS at 20 MHz
32 KB Flash
1024 B EEPROM
2 KB SRAM
131 Instructions – Most single clock cycle execution
32 General Purpose Registers
23 GPIO
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated Oscillator
External and Internal Interrupt Sources
Five Power-Saving Sleep Modes
Internal and External Interrupts
Fully Static Operation

Peripheral Features

10-bit 15 ksps Analogue-to-Digital Converter (ADC) – 8 or 6 channels
Capacitive Touch Sense – 16 channels
Temperature Sensor
Two 8-bit Timers
One 16-bit Timer
Output Compare Module – 6 channels
Six PWM Channels
Programmable Serial USART
Master/Slave SPI Serial Interface
Byte-oriented 2-wire Serial Interface – I2C compatible
Programmable Watchdog Timer with Separate Oscillator
Analogue Comparator
Interrupt and Wake-up on Pin Change

Specifications
Attribute Value
Family Name ATmega
Package Type QFN/MLF
Mounting Type Surface Mount
Pin Count 32
Device Core AVR
Data Bus Width 8bit
Program Memory Size 32 kB
Maximum Frequency 20MHz
RAM Size 2 kB
Number of PWM Units 1
ADC Channels 8
Typical Operating Supply Voltage 1.8 → 5.5 V
Program Memory Type Flash
Number of ADC Units 1
Width 5.1mm
Minimum Operating Temperature -40 °C
Instruction Set Architecture RISC
ADCs 1(8 x 10 bit)
Number of Timers 2
Maximum Operating Temperature +85 °C
ADC Resolution 10bit
Length 5.1mm
Pulse Width Modulation 1(6 Channel)
Timer Resolution 8 bit, 16 bit
PWM Channels 6
Timers 1(1 x 16 bit), 1(2 x 8 bit)
Dimensions 5.1 x 5.1 x 0.95mm
Height 0.95mm
155 In stock for delivery within 3 working days
Price Each (In a Pack of 5)
SGD 2.81
(exc. GST)
SGD 3.01
(inc. GST)
units
Per unit
Per Pack*
5 - 20
SGD2.81
SGD14.05
25 - 95
SGD2.67
SGD13.35
100 - 495
SGD2.446
SGD12.23
500 - 995
SGD2.258
SGD11.29
1000 +
SGD2.098
SGD10.49
*price indicative
Packaging Options:
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