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DS89C440-ENL

DS89C440-ENL

DS89C440-ENL

Maxim Integrated

32KB 32K x 8 FLASH 8051 8-Bit Microcontroller 89C Series DS89C440 33MHz 5V 44-TQFP

SOT-23

DS89C440-ENL Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Mounting Type Surface Mount
Package / Case 44-TQFP
Surface MountYES
Operating Temperature-40°C~85°C TA
PackagingTray
Series 89C
Published 2006
JESD-609 Code e0
Part StatusObsolete
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 44
Terminal Finish Tin/Lead (Sn85Pb15)
Terminal Position QUAD
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 240
Supply Voltage 5V
Terminal Pitch0.8mm
Reach Compliance Code not_compliant
Frequency 33MHz
Time@Peak Reflow Temperature-Max (s) 20
Base Part Number DS89C440
Pin Count44
Qualification StatusNot Qualified
Supply Voltage-Max (Vsup) 5.5V
Power Supplies5V
Interface EBI/EMI, UART, USART
Memory Size16kB
Oscillator TypeExternal
Number of I/O 32
RAM Size 1K x 8
Voltage - Supply (Vcc/Vdd) 4.5V~5.5V
uPs/uCs/Peripheral ICs Type MICROCONTROLLER
Core Processor 8051
Peripherals Power-Fail Reset, WDT
Program Memory TypeFLASH
Core Size 8-Bit
Program Memory Size 32KB 32K x 8
Connectivity EBI/EMI, SIO, UART/USART
Supply Current-Max 110mA
Bit Size 8
Access Time 33 μs
Has ADC NO
DMA Channels NO
Data Bus Width 8b
PWM Channels NO
DAC Channels NO
Number of Timers/Counters 3
Address Bus Width16
Number of Programmable I/O 4
Length 10mm
Height Seated (Max) 1.2mm
RoHS StatusNon-RoHS Compliant
Lead Free Contains Lead
In-Stock:3434 items

DS89C440-ENL Product Details

DS89C440-ENL Overview


The package has a 44-TQFP shape. With 32 I/Os, it's pretty good. The Microcontroller's mounting type is Surface Mount and this IC chip has the following features. As the name implies, this Microcontroller is based on the 8-Bit core. As far as its program memory type is concerned, it is FLASH. Temperatures within -40°C~85°C TA range are measured by this Microcontroller. The 89C series is comprised of this electrical component. The electronic part has a program memory size of 32KB 32K x 8. There's a 8051 Core Processor inside. The IC chip fits into the MICROCONTROLLER uPs/uCs/Peripheral ICs category. There are 44 terminations on the IC chip. 8-bits are the size of the data that comes with MCU. A 5V volt supply is provided by the Microcontroller chip. In addition to that, MCU chip has NO DMA channels. Its memory size is 16kB. It is possible to find alternatives to the base part number DS89C440 by using the part number search tool. An effective performance can be achieved at a frequency of 33MHz. There are a total of NO channels in the device. In total, it has 3 timers and counters in it. A total of 44 pins are included in the package. As far as the programmability is concerned, it has 4 Programmable I/Os.

DS89C440-ENL Features


44-TQFP package
Mounting type of Surface Mount


DS89C440-ENL Applications


There are a lot of Maxim Integrated
DS89C440-ENL Microcontroller applications.


  • Robots
  • Radio
  • Television
  • Heater/Fan
  • Calculator
  • Kindle
  • Christmas lights
  • 3D printers
  • Washing machine
  • Microwave ovens

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