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AT89LS51-16AU - Microchip

Description: 8-bit Microcontrollers - MCU LOW VOLTAGE 4K ISP FLASH-16MHZ 4-5.5V

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AT89LS51-16AU - Microchip PCB footprint - Quad Flat Packages - Quad Flat Packages - 44A – TQFP
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AT89LS51-16AU - Microchip  - 3D model - Quad Flat Packages - 44A – TQFP
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AT89LS51-16AU Details

  • Manufacturer Part Number:

    AT89LS51-16AU

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    10 X 10 MM, 1 MM HEIGHT, 0.80 MM PITCH, GREEN, PLASTIC, MS-026ACB, TQFP-44

  • Pin Count:

    44

  • Manufacturer Package Code:

    TQFP-44

  • Country Of Origin:

    Taiwan, Thailand

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.31.00.01

  • Factory Lead Time:

    9 Weeks

  • Manufacturer:

    Microchip Technology Inc

  • YTEOL:

    14

  • Has ADC:

    NO

  • Address Bus Width:

    16

  • Bit Size:

    8

  • Boundary Scan:

    NO

  • CPU Family:

    8051

  • Clock Frequency-Max:

    16 MHz

  • DAC Channels:

    NO

  • DMA Channels:

    NO

  • External Data Bus Width:

    8

  • Format:

    FIXED POINT

  • Integrated Cache:

    NO

  • JESD-30 Code:

    S-PQFP-G44

  • JESD-609 Code:

    e3

  • Length:

    10 mm

  • Low Power Mode:

    NO

  • Moisture Sensitivity Level:

    3

  • Number of External Interrupts:

    2

  • Number of I/O Lines:

    32

  • Number of Serial I/Os:

    1

  • Number of Terminals:

    44

  • Number of Timers:

    2

  • On Chip Data RAM Width:

    8

  • On Chip Program ROM Width:

    8

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • PWM Channels:

    NO

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TQFP

  • Package Equivalence Code:

    TQFP44,.39SQ,31

  • Package Shape:

    SQUARE

  • Package Style:

    FLATPACK, THIN PROFILE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • RAM (bytes):

    128

  • ROM (words):

    4096

  • ROM Programmability:

    FLASH

  • Seated Height-Max:

    1.2 mm

  • Speed:

    16 MHz

  • Supply Current-Max:

    30 mA

  • Supply Voltage-Max:

    4 V

  • Supply Voltage-Min:

    2.7 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.8 mm

  • Terminal Position:

    QUAD

  • Time@Peak Reflow Temperature-Max (s):

    40

  • Width:

    10 mm

  • uPs/uCs/Peripheral ICs Type:

    MICROCONTROLLER

AT89LS51-16AU Frequently Asked Questions (FAQs)

  • The maximum clock frequency for AT89LS51-16AU is 24 MHz. However, it's recommended to use a clock frequency of 12 MHz or less for most applications to ensure reliable operation.
  • The AT89LS51-16AU has a built-in brownout detection (BOD) circuit that can be enabled or disabled using the BODEN bit in the SYSCON register. When BOD is enabled, the device will reset if the supply voltage falls below the brownout detection threshold (typically 3.9V). To handle brownout detection and reset, you can use an external reset circuit or a supervisory IC that can detect power failures and generate a reset signal.
  • Yes, the AT89LS51-16AU can operate at 3.3V, but it's essential to ensure that the input signals are within the recommended voltage range (VCC - 0.5V to VCC + 0.5V) to prevent latch-up or damage to the device. Additionally, the clock frequency should be reduced to 12 MHz or less to ensure reliable operation at 3.3V.
  • The AT89LS51-16AU has a built-in watchdog timer (WDT) that can be enabled or disabled using the WDTE bit in the SYSCON register. To implement a watchdog timer, you need to configure the WDT period using the WDTP bits in the SYSCON register and then periodically reset the WDT using the WDR instruction. If the WDT is not reset within the configured period, it will generate a reset signal.
  • The maximum current that can be sourced or sunk by the I/O pins of AT89LS51-16AU is 25 mA. However, it's recommended to limit the current to 10 mA or less to ensure reliable operation and prevent overheating.

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AT89LS51-16AU Overview

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About Microchip

Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th

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Part Image AT89LS51-16AC Atmel Corporation

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