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| Quantity | Unit price |
|---|---|
| 1–24 | $1.86 |
| 25–99 | $1.71 |
| 100+ | $1.54 |
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The ATMEGA328P-AU is Microchip's 8-bit AVR microcontroller in a TQFP-32 surface-mount package. It is the same chip family used on Arduino Uno-class boards, which makes it a common choice when moving a prototype into a custom design.
It runs at up to 20 MHz and provides 32 KB of Flash, 2 KB of SRAM and 1 KB of EEPROM, with 23 I/O pins. It operates from 1.8 to 5.5 V, so it works in both 3.3 V and 5 V systems; the maximum clock speed depends on the supply voltage, as shown in the Microchip datasheet. Typical uses include sensors, simple controllers, consumer products and educational hardware. Quantity price breaks are shown on the listing.
| Core | 8-bit AVR, up to 20 MHz |
|---|---|
| Flash | 32 KB |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| I/O | 23 |
| Supply | 1.8–5.5 V |
| Package | TQFP-32 |
Specifications are summarized from manufacturer and listing information; confirm against the manufacturer datasheet before purchase.
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