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MICROCHIP ATMEGA328P-AU
| Manufacturer | |
| MPN | ATMEGA328P-AU |
| LCSC Part # | C14877 |
| Packaging | TQFP-32(7x7) |
| Customer # | |
| Key Attributes | 8-bit Microcontroller with In-System Programmable Flash |
| Datasheet |  MICROCHIP ATMEGA328P-AU |
Products Specifications
All
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Embedded/Microcontrollers | |
| Manufacturer | MICROCHIP | |
| Packaging | TQFP-32(7x7) | |
| ADC (Bit) | 10bit | |
| Operating Temperature | -40℃~+85℃ | |
| Voltage - Supply | 1.8V~5.5V | |
| Program Memory Type | FLASH | |
| EEPROM | 1KB | |
| Program Storage Size | 32KB | |
| CPU Core | AVR | |
| Core Size | 8 Bit | |
| CPU Maximum Speed | 20MHz | |
| Oscillator Type | Built-in | |
| Number of I/O | 23 |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Embedded/Microcontrollers | |
| Manufacturer | MICROCHIP | |
| Packaging | TQFP-32(7x7) | |
| ADC (Bit) | 10bit | |
| Operating Temperature | -40℃~+85℃ | |
| Voltage - Supply | 1.8V~5.5V | |
| Program Memory Type | FLASH |
| Type | Description | |
|---|---|---|
| EEPROM | 1KB | |
| Program Storage Size | 32KB | |
| CPU Core | AVR | |
| Core Size | 8 Bit | |
| CPU Maximum Speed | 20MHz | |
| Oscillator Type | Built-in | |
| Number of I/O | 23 |
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Introduction
AI Translation
The ATmega48A/PA/88A/PA/168A/PA/328/P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture.
Features
AI Translation
- High Performance, Low Power Atmel 8-Bit Microcontroller Family
- Advanced RISC Architecture – 131 Powerful Instructions – Most Single Clock Cycle Executi – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20MHz – On-chip 2-cycle Multiplier
- High Endurance Non-volatile Memory Segments – 4/8/16/32KBytes of In-System Self-Programmable Flash program memory – 256/512/512/1KBytes EEPROM – 512/1K/1K/2KBytes Internal SRAM – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM – Data retention: 20 years at 85℃/100 years at 25℃ – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation
- Programming Lock for Software Security
- Atmel QTouch library support – Capacitive touch buttons, sliders and wheels – QTouch and QMatrix acquisition – Up to 64 sense channels
- Peripheral Features – Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel 10-bit ADC in TQFP and QFN/MLF package Temperature Measurement – 6-channel 10-bit ADC in PDIP Package Temperature Measurement – Programmable Serial USART – Master/Slave SPI Serial Interface – Byte-oriented 2-wire Serial Interface (Philips I2C compatible) – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change
- Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
- I/O and Packages – 23 Programmable I/O Lines – 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
In-Stock: 6,117
6,117 In stock, ships now
Minimum: 1Multiple: 1Sales Unit: Piece
Add to BOM List
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 2.4283 | $ 2.43 |
| 10+ | $ 2.1396 | $ 21.40 |
| 30+ | $ 1.9352 | $ 58.06 |
| 250+ | $ 1.7762 | $ 444.05 |
| 500+ | $ 1.6903 | $ 845.15 |
| 1,000+ | $ 1.6546 | $ 1654.60 |
Standard Packaging250/Full Tray | ||
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Products Specifications
All
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Embedded/Microcontrollers | |
| Manufacturer | MICROCHIP | |
| Packaging | TQFP-32(7x7) | |
| ADC (Bit) | 10bit | |
| Operating Temperature | -40℃~+85℃ | |
| Voltage - Supply | 1.8V~5.5V | |
| Program Memory Type | FLASH | |
| EEPROM | 1KB | |
| Program Storage Size | 32KB | |
| CPU Core | AVR | |
| Core Size | 8 Bit | |
| CPU Maximum Speed | 20MHz | |
| Oscillator Type | Built-in | |
| Number of I/O | 23 |
| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Embedded/Microcontrollers | |
| Manufacturer | MICROCHIP | |
| Packaging | TQFP-32(7x7) | |
| ADC (Bit) | 10bit | |
| Operating Temperature | -40℃~+85℃ | |
| Voltage - Supply | 1.8V~5.5V | |
| Program Memory Type | FLASH |
| Type | Description | |
|---|---|---|
| EEPROM | 1KB | |
| Program Storage Size | 32KB | |
| CPU Core | AVR | |
| Core Size | 8 Bit | |
| CPU Maximum Speed | 20MHz | |
| Oscillator Type | Built-in | |
| Number of I/O | 23 |
Report an ErrorShow similar products (0) >
Introduction
AI Translation
The ATmega48A/PA/88A/PA/168A/PA/328/P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture.
Features
AI Translation
- High Performance, Low Power Atmel 8-Bit Microcontroller Family
- Advanced RISC Architecture – 131 Powerful Instructions – Most Single Clock Cycle Executi – 32 x 8 General Purpose Working Registers – Fully Static Operation – Up to 20 MIPS Throughput at 20MHz – On-chip 2-cycle Multiplier
- High Endurance Non-volatile Memory Segments – 4/8/16/32KBytes of In-System Self-Programmable Flash program memory – 256/512/512/1KBytes EEPROM – 512/1K/1K/2KBytes Internal SRAM – Write/Erase Cycles: 10,000 Flash/100,000 EEPROM – Data retention: 20 years at 85℃/100 years at 25℃ – Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation
- Programming Lock for Software Security
- Atmel QTouch library support – Capacitive touch buttons, sliders and wheels – QTouch and QMatrix acquisition – Up to 64 sense channels
- Peripheral Features – Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode – Real Time Counter with Separate Oscillator – Six PWM Channels – 8-channel 10-bit ADC in TQFP and QFN/MLF package Temperature Measurement – 6-channel 10-bit ADC in PDIP Package Temperature Measurement – Programmable Serial USART – Master/Slave SPI Serial Interface – Byte-oriented 2-wire Serial Interface (Philips I2C compatible) – Programmable Watchdog Timer with Separate On-chip Oscillator – On-chip Analog Comparator – Interrupt and Wake-up on Pin Change
- Special Microcontroller Features – Power-on Reset and Programmable Brown-out Detection – Internal Calibrated Oscillator – External and Internal Interrupt Sources – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
- I/O and Packages – 23 Programmable I/O Lines – 28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
C14877 EasyEDA Library
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542319090 |
| USHTS | |
| TARIC | |
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542319090 |
| USHTS | |
| TARIC |
| Type | Details |
|---|---|
| CAHTS | |
| BRHTS | |
| INHTS | |
| MXHTS | |
Product FAQ
- 1. What Are the LCSC Pricing Tiers and Stock Availability for the ATMEGA328P-AU (LCSC #C14877)?LCSC lists the ATMEGA328P-AU with the following volume pricing: 1+ at $2.348, 10+ at $2.045, 30+ at $1.8242, 250+ at $1.854, 500+ at $1.5695, and 1,000+ at $1.5242 per piece. The minimum order quantity is 1 piece and the standard packaging is 250 pieces per Full Tray. Current in-stock quantity is 8,070 units available for immediate shipment. The part is RoHS compliant with an ECCN of EAR99 and CNHTS code 8542390090. As a widely-used Microchip MCU, it is also available through major global distributors including Digi-Key and Mouser for additional sourcing flexibility.
- 2. What PCB Design Considerations Apply to the ATMEGA328P-AU in Its TQFP-32 (7x7mm) Package, and How Many I/O Pins Are Available?The ATMEGA328P-AU is housed in a TQFP-32 (7x7mm) surface-mount package with a 0.8mm pin pitch, providing 23 programmable I/O pins. The QFP footprint is compatible with standard IPC-7351-compliant land patterns and is supported with EDA models available on LCSC, simplifying PCB design. The compact 7x7mm body makes it suitable for space-constrained designs. Designers should provide adequate decoupling capacitors on all VCC and AVCC pins per Microchip's recommended PCB layout guidelines. The built-in oscillator eliminates the need for an external crystal in many applications, saving board space and BOM cost.
- 3. What Is the Operating Voltage Range of the ATMEGA328P-AU, and How Does Its 10-Bit ADC Perform in Mixed-Signal Applications?The ATMEGA328P-AU operates across a wide supply voltage range of 1.8V to 5.5V, making it compatible with both 3.3V and 5V power domains without additional regulation in many designs. The integrated 10-bit ADC provides a resolution of 1/1024 of the reference voltage — on a 5V reference, this gives approximately 4.88mV per LSB. This resolution is adequate for temperature sensing, potentiometer reading, light sensing, pressure transducer interfaces, and battery monitoring. The operating temperature range is -40°C to +85°C, qualifying it for industrial and outdoor applications that experience wide ambient temperature excursions.
- 4. How Is the ATMEGA328P-AU's On-Chip Memory Structured, and Is 32KB of FLASH Sufficient for Typical Firmware Applications?The ATMEGA328P-AU provides three on-chip memory types: 32KB of self-programmable in-system FLASH for firmware storage, 1KB of EEPROM for non-volatile data retention across power cycles (such as calibration constants or device configuration), and internal SRAM (refer to datasheet for SRAM size). The 32KB FLASH supports projects of significant complexity — it is the same flash capacity used in the Arduino Uno, which runs full networking stacks and sensor fusion libraries. The in-system programmability means firmware can be updated via the SPI interface without removing the device from the board, simplifying field maintenance and manufacturing programming.
- 5. What Are the Key Processing Specifications of the ATMEGA328P-AU, and What Does Its 8-Bit AVR Core Mean for Embedded Application Suitability?The ATMEGA328P-AU is an 8-bit microcontroller built on Microchip's (formerly Atmel) AVR RISC architecture, operating at a maximum CPU speed of 20MHz with a built-in oscillator. It features 32KB of in-system programmable FLASH program storage, 1KB of EEPROM, and a 10-bit ADC. Housed in a TQFP-32 (7x7mm) package with 23 I/O pins, it is well-suited for embedded control, sensor acquisition, motor control, communication protocol bridging, and IoT edge applications. The wide supply voltage range of 1.8V–5.5V accommodates both 3.3V and 5V system designs without additional level-shifting.