8051 C8051F58x Microcontroller IC 8-Bit 50MHz 128KB (128K x 8) FLASH 48-TQFP (7x7)
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C8051F581-IQ

DigiKey Part Number
336-1566-ND
Manufacturer
Manufacturer Product Number
C8051F581-IQ
Description
IC MCU 8BIT 128KB FLASH 48TQFP
Customer Reference
Detailed Description
8051 C8051F58x Microcontroller IC 8-Bit 50MHz 128KB (128K x 8) FLASH 48-TQFP (7x7)
Datasheet
 Datasheet
Product Attributes
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Category
Program Memory Size
Mfr
Program Memory Type
FLASH
Series
RAM Size
8.25K x 8
Packaging
Tray
Voltage - Supply (Vcc/Vdd)
1.8V ~ 5.25V
Part Status
Last Time Buy
Data Converters
A/D 32x12b
DigiKey Programmable
Not Verified
Oscillator Type
Internal
Core Processor
8051
Operating Temperature
-40°C ~ 125°C (TA)
Core Size
8-Bit
Mounting Type
Surface Mount
Speed
50MHz
Supplier Device Package
48-TQFP (7x7)
Connectivity
EBI/EMI, SMBus (2-Wire/I2C), SPI, UART/USART
Package / Case
48-TQFP
Peripherals
POR, PWM, Temp Sensor, WDT
Base Product Number
Number of I/O
40
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (1)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
EFM8BB31F64I-D-QFN32Silicon Labs0336-EFM8BB31F64I-D-QFN32-ND€ 1,31260MFR Recommended
In-Stock: 736
Check for Additional Incoming Stock
Last Time Buy Date: 10.09.2026
All prices are in EUR
Tray
QuantityUnit PriceExt Price
1€ 13,15000€ 13,15
10€ 10,69500€ 106,95
25€ 9,92960€ 248,24
100€ 9,01560€ 901,56
250€ 8,55744€ 2 139,36
500€ 8,27680€ 4 138,40
1 000€ 8,04495€ 8 044,95
Manufacturers Standard Package
Note: Due to DigiKey value-add services the packaging type may change when product is purchased at quantities beneath the standard package.
Unit Price without VAT:€ 13,15000
Unit Price with VAT:€ 16,04300