Microchip ATMEGA328-AU, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 32-Pin TQFP
- RS Stock No.:
- 1310267
- Mfr. Prt No.:
- ATMEGA328-AU
- Brand:
- Microchip
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 1310267 |
| Product description | Microchip ATMEGA328-AU, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 32-Pin TQFP |
| Manufacturer / Brand | Microchip |
| Manufacturer part number | ATMEGA328-AU |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 1310267 |
| Product description | Microchip ATMEGA328-AU, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 32-Pin TQFP |
| Manufacturer / Brand | Microchip |
| Manufacturer part number | ATMEGA328-AU |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 28, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
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 |
| Brand | Microchip |
| PWM Channels | 6 |
| Width | 7.1 mm |
| ADC Resolution | 10 bit |
| Device Core | AVR |
| Program Memory Size | 32 kB |
| Timers | 1(1 x 16 bit), 1(2 x 8 bit) |
| Minimum Operating Temperature | -40 °C |
| Dimensions | 7.1 x 7.1 x 1.05 mm |
| RAM Size | 2 kB |
| Pin Count | 32 |
| Pulse Width Modulation | 1 (6 Channel) |
| Instruction Set Architecture | RISC |
| Typical Operating Supply Voltage | 1.8 → 5.5 V |
| Mounting Type | Surface Mount |
| ADCs | 8 x 10 bit |
| ADC Channels | 8 |
| Data Bus Width | 8 bit |
| Timer Resolution | 8 bit, 16 bit |
| Height | 1.05 mm |
| Number of ADC Units | 1 |
| Program Memory Type | Flash |
| Maximum Frequency | 20 MHz |
| Package Type | TQFP |
| Maximum Operating Temperature | +85 °C |
| USB Channels | 0 |
| Number of PWM Units | 1 |
| Length | 7.1 mm |
| Number of Timers | 2 |
| Family Name | ATmega |
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