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DS89C420-QCL

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DS89C420-QCL

IC MCU 8BIT 16KB FLASH 44PLCC

Manufacturer: Analog Devices Inc./Maxim Integrated

Categories: Microcontrollers

Quality Control: Learn More

Analog Devices Inc./Maxim Integrated 89C series microcontroller, part number DS89C420-QCL. This 8-bit 8051 core microcontroller operates at 33MHz and features 16KB of FLASH program memory. The device offers 1K x 8 of RAM and includes peripherals such as Power-Fail Reset and Watchdog Timer (WDT). Connectivity options include EBI/EMI, SIO, and UART/USART. The DS89C420-QCL is housed in a 44-PLCC (J-Lead) package with a surface mount type. It requires an external oscillator and operates within a voltage range of 4.5V to 5.5V. This component is suitable for applications in industrial automation, telecommunications, and automotive systems.

Additional Information

Series: 89CRoHS Status: ROHS3 CompliantManufacturer Lead Time: No lead time information availableProduct Status: ObsoletePackaging: Tube
Technical Details:
PackagingTube
Package / Case44-LCC (J-Lead)
Mounting TypeSurface Mount
Speed33MHz
Program Memory Size16KB (16K x 8)
RAM Size1K x 8
Operating Temperature0°C ~ 70°C (TA)
Oscillator TypeExternal
Program Memory TypeFLASH
EEPROM Size-
Core Processor8051
Data Converters-
Core Size8-Bit
Voltage - Supply (Vcc/Vdd)4.5V ~ 5.5V
ConnectivityEBI/EMI, SIO, UART/USART
PeripheralsPower-Fail Reset, WDT
Supplier Device Package44-PLCC (16.59x16.59)
Number of I/O32
ProgrammableNot Verified

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Microcontroller FAQs

A microcontroller is a compact integrated circuit that combines a processor, memory, and input/output peripherals for embedded control applications.

Microcontrollers execute programmed instructions to process sensor inputs and control outputs such as motors, displays, and communication interfaces.

Microcontrollers are commonly used in:

  • Automotive systems
  • Robotics
  • IoT devices
  • Industrial automation
  • Household appliances
  • Smart electronics

Microcontrollers integrate memory and peripherals on-chip for dedicated tasks, while microprocessors are designed for higher-performance computing systems requiring external components.

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