Microchip, 8bit AVR, ATmega Microcontroller, 20MHz, 32 kB Flash, 32-Pin TQFP
- RS Stock No.:
 - 131-0271
 - Mfr. Part No.:
 - ATMEGA328P-AU
 - Brand:
 - Microchip
 
Subtotal (1 pack of 2 units)*
£3.90
(exc. VAT)
£4.68
(inc. VAT)
FREE delivery for orders over £50.00
- 158 unit(s) ready to ship
 - Plus 86 unit(s) ready to ship from another location
 - Plus 5,202 unit(s) shipping from 11 November 2025
 
Units  | Per unit  | Per Pack*  | 
|---|---|---|
| 2 - 8 | £1.95 | £3.90 | 
| 10 - 22 | £1.91 | £3.82 | 
| 24 - 98 | £1.86 | £3.72 | 
| 100 + | £1.805 | £3.61 | 
*price indicative
- RS Stock No.:
 - 131-0271
 - Mfr. Part No.:
 - ATMEGA328P-AU
 - Brand:
 - Microchip
 
Select all  | Attribute | Value | 
|---|---|---|
| Brand | Microchip | |
| Family Name | ATmega | |
| Package Type | TQFP | |
| 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 | |
| USB Channels | 0 | |
| Number of PWM Units | 1 | |
| Number of SPI Channels | 2 | |
| Typical Operating Supply Voltage | 1.8 → 5.5 V | |
| Number of I2C Channels | 1 | |
| Number of CAN Channels | 0 | |
| Number of USART Channels | 1 | |
| Number of UART Channels | 1 | |
| Instruction Set Architecture | RISC | |
| Minimum Operating Temperature | -40 °C | |
| Number of ADC Units | 1 | |
| Maximum Operating Temperature | +85 °C | |
| Length | 7.1mm | |
| ADCs | 8 x 10 bit | |
| Maximum Number of Ethernet Channels | 0 | |
| Number of PCI Channels | 0 | |
| Number of Ethernet Channels | 0 | |
| Number of LIN Channels | 0 | |
| Height | 1.05mm | |
| Width | 7.1mm | |
| Dimensions | 7.1 x 7.1 x 1.05mm | |
| Pulse Width Modulation | 1 (6 Channel) | |
| Program Memory Type | Flash | |
| Select all | ||
|---|---|---|
Brand Microchip  | ||
Family Name ATmega  | ||
Package Type TQFP  | ||
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  | ||
USB Channels 0  | ||
Number of PWM Units 1  | ||
Number of SPI Channels 2  | ||
Typical Operating Supply Voltage 1.8 → 5.5 V  | ||
Number of I2C Channels 1  | ||
Number of CAN Channels 0  | ||
Number of USART Channels 1  | ||
Number of UART Channels 1  | ||
Instruction Set Architecture RISC  | ||
Minimum Operating Temperature -40 °C  | ||
Number of ADC Units 1  | ||
Maximum Operating Temperature +85 °C  | ||
Length 7.1mm  | ||
ADCs 8 x 10 bit  | ||
Maximum Number of Ethernet Channels 0  | ||
Number of PCI Channels 0  | ||
Number of Ethernet Channels 0  | ||
Number of LIN Channels 0  | ||
Height 1.05mm  | ||
Width 7.1mm  | ||
Dimensions 7.1 x 7.1 x 1.05mm  | ||
Pulse Width Modulation 1 (6 Channel)  | ||
Program Memory Type Flash  | ||
ATmega328P 8-Bit megaAVR picoPower Microcontrollers
Microcontroller Features
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
Six Power-Saving Sleep Modes
Internal and External Interrupts
Fully Static Operation
Peripheral Features
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
Related links
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 - Microchip ATmega Microcontroller 32 kB Flash, 100-Pin TQFP
 - Microchip ATmega Microcontroller 16 kB Flash, 32-Pin TQFP
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