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AT89C1051U - 8-Bit Microcontroller with 1K Bytes Flash

Download the AT89C1051U datasheet PDF. This datasheet also covers the AT8 variant, as both devices belong to the same 8-bit microcontroller with 1k bytes flash family and are provided as variant models within a single manufacturer datasheet.

General Description

The AT89C1051U is a low-voltage, high-performance CMOS 8-bit microcomputer with 1K bytes of Flash programmable and erasable read only memory.

It has the same functionality and operation as the AT89C1051 with the addition of a UART programmable serial port.

Key Features

  • Compatible with MCS-51™ Products.
  • 1K Bytes of Reprogrammable Flash Memory.
  • Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock 64 x 8-Bit Internal RAM 15 Programmable I/O Lines Two 16-Bit Timer/Counters Six Interrupt Sources Programmable Serial UART Channel Direct LED Drive Outputs.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AT8-9C105.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
AT89C1051 8-Bit Microcontroller with 1K Byte Flash
AT89C2051 8-Bit Microcontroller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Features • Compatible with MCS-51™ Products • 1K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • – Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock 64 x 8-Bit Internal RAM 15 Programmable I/O Lines Two 16-Bit Timer/Counters Six Interrupt Sources Programmable Serial UART Channel Direct LED Drive Outputs On-Chip Analog Comparator Low Power Idle and Power Down Modes Description The AT89C1051U is a low-voltage, high-performance CMOS 8-bit microcomputer with 1K bytes of Flash programmable and erasable read only memory. It has the same functionality and operation as the AT89C1051 with the addition of a UART programmable serial port.