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AT89LP51-20AU

AT89LP51-20AU

AT89LP51-20AU

Microchip Technology

4KB 4K x 8 FLASH 8051 8-Bit Microcontroller 89LP Series AT89LP51 44 Pin 20MHz 5V 44-TQFP

SOT-23

AT89LP51-20AU Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Factory Lead Time 4 Weeks
Lifecycle Status Production (Last Updated: 2 years ago)
Contact PlatingTin
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 44-TQFP
Surface MountYES
Number of Pins 44
Supplier Device Package 44-TQFP (10x10)
Number of Terminals 44
Mounting Style SMD/SMT
Interfaces UART
Data Converters --
DAC Resolution -
Number of I/Os 36 I/O
Maximum Operating Temperature+ 85 C
Minimum Operating Temperature - 40 C
Interface Type 2-Wire, SPI, UART
Manufacturer Microchip
Brand Microchip Technology / Atmel
RoHS Details
Package Tray
Base Product Number AT89LP51
Mfr Microchip Technology
Product Status Active
Package Shape SQUARE
Number of I/O Lines 36
Operating Temperature-40°C~85°C TA
PackagingTray
Series 89LP
Published 2012
JESD-609 Code e3
Pbfree Code yes
Part StatusActive
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 44
Terminal Finish Matte Tin (Sn) - annealed
Max Operating Temperature85 °C
Min Operating Temperature -40 °C
Additional FeatureOPERATES AT 2.4 V MINIMUM SUPPLY AT 20 MHZ
Terminal Position QUAD
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 5V
Terminal Pitch0.8mm
Reach Compliance Code compliant
Frequency 20MHz
Time@Peak Reflow Temperature-Max (s) 40
Base Part Number AT89LP51
JESD-30 Code S-PQFP-G44
Qualification StatusNot Qualified
Supply Voltage-Max (Vsup) 5.5V
Power Supplies2.5/5V
Temperature GradeINDUSTRIAL
Supply Voltage-Min (Vsup) 4.5V
Interface EBI/EMI, I2C, SPI, UART, USART
Max Supply Voltage5.5 V
Min Supply Voltage2.4 V
Memory Size4kB
Oscillator TypeInternal
Number of I/O 36
Speed 20MHz
RAM Size 256 x 8
Memory TypeFLASH
Voltage - Supply (Vcc/Vdd) 2.4V~5.5V
uPs/uCs/Peripheral ICs Type MICROCONTROLLER
Core Processor 8051
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Program Memory TypeFLASH
Core Size 8-Bit
Program Memory Size 4KB 4K x 8
Connectivity EBI/EMI, I2C, SPI, UART/USART
Supply Current-Max 7 mA
Bit Size 8
Watchdog TimerYes
Has ADC NO
DMA Channels NO
Data Bus Width 8b
PWM Channels NO
DAC Channels NO
Seated Height-Max 1.2 mm
Number of Timers/Counters 3
Address Bus Width16
Product Type8-bit Microcontrollers - MCU
ROM (words) 4096
Core Architecture 8051
EEPROM Size --
CPU Family 8051
Max Frequency 20 MHz
External Data Bus Width 8
Number of Programmable I/O 36
RAM (bytes) 256
Number of ADC Channels -
ROM Programmability FLASH
Product MCU
Product Category8-bit Microcontrollers - MCU
Device Core80C51
Length 10mm
Height Seated (Max) 1.2mm
Width 10 mm
RoHS StatusROHS3 Compliant
In-Stock:3906 items

Pricing & Ordering

QuantityUnit PriceExt. Price
1$1.23000$1.23
25$1.12280$28.07
100$1.01970$101.97

AT89LP51-20AU Product Details

AT89LP51-20AU Overview


In a 44-TQFP package, the MCU is available. 36 I/Os are available. The Microcontroller has a mounting type of Surface Mount, which indicates that it is mounted conveniently. The 8-Bit core is the core of the MCU. There is a FLASH type of memory for its program. There is a temperature range of -40°C~85°C TA that is operated by this Microcontroller. 89LP series components make up this electrical component. 4KB 4K x 8 is the size of its program memory. A 8051 Core processor is used to power the device. This device falls under the MICROCONTROLLER uPs/uCs/Peripheral ICs category. 44 is the number of terminations on the IC chip that are present. This part works in a 8-bit manner. There is a 5V volt supply output on the chip. DMA channels number NO. 4kB is the memory size of the part. The base part number AT89LP51 can be used to find alternatives. The efficiency of this device can be improved when operating at a frequency of 20MHz. The device works in NO PWM channels. Located on the chip are 44 pins. The clock has 3 timers or counters on it. In this device, there is a 8051 CPU embedded within it. It has built-in FLASH memory. There is an integrated 8051 core architecture in it. It programs in 36 Programmable I/O. I would like to mention a few additional features such as OPERATES AT 2.4 V MINIMUM SUPPLY AT 20 MHZ in order to name a few. A total of - channels of ADC are available on this device.

AT89LP51-20AU Features


44-TQFP package
Mounting type of Surface Mount
Minimum temperature of -40 °C


AT89LP51-20AU Applications


There are a lot of Microchip Technology
AT89LP51-20AU Microcontroller applications.


  • Heater/Fan
  • Calculator
  • Kindle
  • Christmas lights
  • 3D printers
  • Washing machine
  • Microwave ovens
  • Home appliances
  • Home video and audio
  • Entertainment products

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