Microchip, 8bit AVR, ATmega Microcontroller, 20MHz, 32 kB Flash, 28-Pin PDIP

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Subtotal (1 pack of 5 units)*

TWD425.00

(exc. GST)

TWD446.25

(inc. GST)

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In Stock
  • 390 unit(s) ready to ship from another location
  • Plus 130 unit(s) shipping from December 17, 2025
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Units
Per unit
Per Pack*
5 - 5TWD85.00TWD425.00
10 +TWD83.60TWD418.00

*price indicative

Packaging Options:
RS Stock No.:
131-0277
Mfr. Part No.:
ATMEGA328-PU
Manufacturer:
Microchip
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Brand

Microchip

Family Name

ATmega

Package Type

PDIP

Mounting Type

Through Hole

Pin Count

28

Device Core

AVR

Data Bus Width

8bit

Program Memory Size

32 kB

Maximum Frequency

20MHz

RAM Size

2 kB

USB Channels

0

Number of PWM Units

1

Number of SPI Channels

2

Typical Operating Supply Voltage

1.8 → 5.5 V

Number of USART Channels

1

Number of I2C Channels

1

Number of CAN Channels

0

Number of UART Channels

1

Length

34.79mm

ADCs

6 x 10 bit

Maximum Number of Ethernet Channels

0

Instruction Set Architecture

RISC

Maximum Operating Temperature

+85 °C

Number of ADC Units

1

Minimum Operating Temperature

-40 °C

Program Memory Type

Flash

Number of LIN Channels

0

Number of Ethernet Channels

0

Number of PCI Channels

0

Pulse Width Modulation

1 (6 Channel)

Dimensions

34.79 x 7.49 x 4.06mm

Width

7.49mm

Height

4.06mm

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

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