# AT89x51xxA (Component) ## Description 8-bit Microcontroller with 4K Bytes Flash, TQFP-44 Microcontroller 8051 TQFP ?QFP?44* ## Component Details - **Owner:** kicad-part-library - **Created:** 9/26/2024 - **Last Updated:** 9/26/2024 - **Visibility:** Public - **Manufacturer Name:** Microchip Technology Inc. - **Datasheet URL:** https://ww1.microchip.com/downloads/en/DeviceDoc/doc2487.pdf - **Manufacturer Part Number:** AT89x51xxA - **Package or Case Code:** TQFP-44_10x10mm_P0.8mm - **Manufacturer:** Microchip - **MPN:** AT89x51xxA - **Package / Case Code:** 44-TQFP - **Pin Count:** 44 ## Pins | Pin | Name | Type | |-----|------|------| | 1 | P1.5 | | | 2 | P1.6 | | | 3 | P1.7/SCK | | | 4 | RST | | | 5 | P3.0 | | | 6 | NC | | | 7 | P3.1 | | | 8 | P3.2 | | | 9 | P3.3 | | | 10 | P3.4 | | | 11 | P3.5 | | | 12 | P3.6 | | | 13 | P3.7 | | | 14 | XTAL2 | | | 15 | XTAL1 | | | 16 | GND | | | 17 | GND | | | 18 | P2.0/A8 | | | 19 | P2.1/A9 | | | 20 | P2.2/A10 | | | 21 | P2.3/A11 | | | 22 | P2.4/A12 | | | 23 | P2.5/A13 | | | 24 | P2.6/A14 | | | 25 | P2.7/A15 | | | 26 | ~{PSEN} | | | 27 | ALE | | | 28 | NC | | | 29 | ~{EA}/V_{pp} | | | 30 | P0.7/AD7 | | | 31 | P0.6/AD6 | | | 32 | P0.5/AD5 | | | 33 | P0.4/AD4 | | | 34 | P0.3/AD3 | | | 35 | P0.2/AD2 | | | 36 | P0.1/AD1 | | | 37 | P0.0/AD0 | | | 38 | V_{cc} | | | 39 | NC | | | 40 | P1.0 | | | 41 | P1.1 | | | 42 | P1.2 | | | 43 | P1.3 | | | 44 | P1.4 | | --- *Generated from [https://www.flux.ai/kicad-part-library/at89x51xxa~ml2](https://www.flux.ai/kicad-part-library/at89x51xxa~ml2)*