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AT89C55WD-24AU
Microchip TechnologyRoHS 
RoHS compliant
RoHS compliantPackage 44-TQFP
Category Embedded - Microcontrollers / Embedded - Microcontrollers
Description
MCU 8-bit AT89 80C51 CISC 20KB Flash 5V 44-Pin TQFP
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Inventory: 412
Minimum: 1
Total Price: USD $8.34
Unit Price: USD $8.344713
≥1 USD $8.344713
≥10 USD $7.872363
≥100 USD $7.426764
≥500 USD $7.006387
≥1000 USD $6.609791
Technical Details
Supply Chain
Factory Lead Time 10 Weeks
Physical
Contact Plating Tin
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 44-TQFP
Number of Pins 44
Technical
Operating Temperature -40°C~85°C TA
Packaging Tray
Published 1996
Series 89C
JESD-609 Code e3
Pbfree Code yes
Part Status Active
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 44
Subcategory Microcontrollers
Technology CMOS
Terminal Position QUAD
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 5V
Terminal Pitch 0.8mm
Frequency 24MHz
Time@Peak Reflow Temperature-Max (s) 40
Base Part Number AT89C55
Operating Supply Voltage 5V
Power Supplies 5V
Interface UART, USART
Memory Size 20kB
Oscillator Type Internal
Number of I/O 32
RAM Size 256 x 8
Voltage - Supply (Vcc/Vdd) 4.5V~5.5V
uPs/uCs/Peripheral ICs Type MICROCONTROLLER
Core Processor 8051
Peripherals WDT
Program Memory Type FLASH
Core Size 8-Bit
Program Memory Size 20KB 20K x 8
Connectivity UART/USART
Supply Current-Max 25mA
Bit Size 8
Watchdog Timer Yes
Access Time 24 μs
Has ADC NO
DMA Channels NO
Data Bus Width 8b
PWM Channels NO
DAC Channels NO
Number of Timers/Counters 3
ROM (words) 20480
Number of UART Channels 1
Dimensions
Height 1.05mm
Length 10.1mm
Width 10.1mm
Compliance
Radiation Hardening No
REACH SVHC No SVHC
RoHS Status ROHS3 Compliant
Lead Free Lead Free
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