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

DigiKey Part Number
336-4821-2-ND - Tape & Reel (TR)
336-4821-1-ND - Cut Tape (CT)
336-4821-6-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
C8051F581-IQR
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
EDA/CAD Models
C8051F581-IQR Models
Product Attributes
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Category
Program Memory Size
Mfr
Program Memory Type
FLASH
Series
RAM Size
8.25K x 8
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
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-QFN32RSilicon Labs0336-EFM8BB31F64I-D-QFN32RTR-ND£1.22102MFR Recommended
In-Stock: 657
Check for Additional Incoming Stock
Last Time Buy Date: 10/09/2026
All prices are in GBP
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1£11.46000£11.46
10£9.32500£93.25
25£8.65720£216.43
100£7.86040£786.04
250£7.78872£1,947.18
* All Digi-Reel orders will add a £4.50 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
500£7.21628£3,608.14
1,000£7.01413£7,014.13
Manufacturers Standard Package
Unit Price without VAT:£11.46000
Unit Price with VAT:£13.75200