EN
  • EN
  • DE
loading
Mfr. Part No. Qty. Price

No items in the cart

View Cart
Same model may have multiple batches, images only for reference.
C8051F581-IQR
Same model may have multiple batches, images only for reference.

C8051F581-IQR

Part No C8051F581-IQR
Manufacturer Silicon Labs
Catalog Embedded - Microcontrollers
Description IC MCU 8BIT 128KB FLASH 48TQFP
Datasheet
C8051F581-IQR Datasheet
Sample
Rohs State rohs
ECAD Module
Need Help

Products specifications Report Issue?

Category Integrated Circuits (ICs) - Embedded - Microcontrollers
Mfr Silicon Labs
Series C8051F58x
Package Tape & Reel
Product Status Active
Core Processor 8051
Core Size 8-Bit
Speed 50MHz
Connectivity EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
Peripherals POR, PWM, Temp Sensor, WDT
Number of I/O 40
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
EEPROM Size -
RAM Size 8.25K x 8
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.25V
Data Converters A/D 32x12b
Oscillator Type Internal
Temperature Range - Operating -40°C ~ 125°C (TA)
Mounting Type Surface Mount
Package / Case 48-TQFP
Supplier Device Package 48-TQFP (7x7)
Base Product Number C8051F581
MSL Level 3 (168 Hours)
ECCN 3A991A2
HTSUS 8542.31.0001
Win Source Part Number 1378105-C8051F581-IQR
Ultra Librarian 3D Model Ultra Librarian C8051F581-IQR CAD Model

Description

The C8051F581-IQR is an 8-bit microcontroller from Silicon Labs' C8051F58x series. Bold the product name (e.g., BAV99S,135 → C8051F581-IQR) and manufacturer (e.g., Nexperia USA Inc. → Silicon Labs).

  • Category: Integrated Circuits (ICs)
  • Operating Temperature: -40°C to 125°C (TA)
  • Package: 48-TQFP
  • Supplier Device Package: 48-TQFP (7x7)
  • Speed: 50MHz
  • Number of I/O: 40
  • Core Processor: 8051
  • Core Size: 8-Bit
  • Connectivity: EBI/EMI, SMBus (2-Wire/I²C), SPI, UART/USART
  • Peripherals: Power-On Reset (POR), Pulse Width Modulation (PWM), Temperature Sensor, Watchdog Timer (WDT)
  • Program Memory Size: 128KB (128K x 8)
  • Memory Type: Flash
  • Voltage Supply: 1.8V to 5.25V
  • A/D Converter: 32x12 bits
  • Status: Active

You May Also Be Interested in

SAF-XC164CM-8F40F AA Infineon Technologies – Price, Stock & Datasheet
SAF-XC164CM-8F40F AA
Infineon Technologies
LQFP-64(10x10) Microcontrollers RoHS
Lowest to $207.1429
SAK-XC2224L-20F66V AA Infineon Technologies – Price, Stock & Datasheet
SAK-XC2224L-20F66V AA
Infineon Technologies
16-bit Microcontrollers - MCU 16/32b Sngl Chip MCU 32Bit Performance
Lowest to $12.9515
HT32F52367 Holtek – Price, Stock & Datasheet
HT32F52367
Holtek
ARM Cortex-M0+ 32 Bit 48MHz LQFP-48(7x7) Microcontrollers RoHS
Lowest to $2.6253
AT32F415RCT7-7 ARTERY – Price, Stock & Datasheet
AT32F415RCT7-7
ARTERY
ARM Cortex-M4 32 Bit 150MHz 55 LQFP-64(7x7) Microcontrollers RoHS
Lowest to $1.2224
SAK-TC397XP-256F300S BD Infineon Technologies – Price, Stock & Datasheet
SAK-TC397XP-256F300S BD
Infineon Technologies
32 Bit 300MHz LFBGA-292 Microcontrollers RoHS
Lowest to $33.4702
SAF-XE167F-96F66L AC Infineon Technologies – Price, Stock & Datasheet
SAF-XE167F-96F66L AC
Infineon Technologies
Others 16 Bit 66MHz 118 LQFP-144(20x20) Microcontrollers RoHS
Lowest to $216.4180
RP2350A Raspberry Pi – Price, Stock & Datasheet
RP2350A
Raspberry Pi
QFN-60-EP(7x7) Microcontrollers RoHS
Lowest to $1.7594
TN80C196KB-16 Rochester Electronics – Price, Stock & Datasheet
TN80C196KB-16
Rochester Electronics
Others 16 Bit 16MHz 48 PLCC-68 Microcontrollers RoHS
Lowest to $74.0299
XMC4500-F100K1024 AC Infineon Technologies – Price, Stock & Datasheet
XMC4500-F100K1024 AC
Infineon Technologies
XMC4500-F100K1024 AC Infineon Technologies ARM Microcontrollers - MCU XMC4000 datasheet, inventory, & pricing.
Need more? Email Us

Top Sellers

PI3740-00-LGIZ real image
PI3740-00-LGIZ
Vicor Corporation
DC DC CONVERTER 10-50V / 8V – 60VIN , 10V – 50VOUT , 50 – 140W Cool-Power ZVS Buck-Boost Regulator
Lowest to $41.3948
PE4312C-Z label picture
PE4312C-Z
Peregrine Semiconductor
RF ATTENUATOR 31.5DB 50OHM 20QFN
Lowest to $2.2891
74HC595D,118 label picture
74HC595D,118
Nexperia USA Inc.
Counter Shift Registers 8-bit serial-in, serial or parallel-out shift register with output latches; 3 - state
Lowest to $0.1046
EC2-5NU real image3736
EC2-5NU
Kemet
RELAY GEN PURPOSE DPDT 2A 5V
Lowest to $0.9677
BMI160 real image
BMI160
Bosch Sensortec
IMU ACCEL/GYRO I2C/SPI 14LGA / Accelerometer, Gyroscope, 6 Axis Sensor I2C, SPI Output
Lowest to $3.6828
DRV8432DKD Real Image1
DRV8432DKD
Texas Instruments
IC BRIDGE DRIVER PAR 36HSSOP
Lowest to $19.3374
TPSM63606RDLR Real Image
TPSM63606RDLR
Texas Instruments
DC DC CONVERTER 1-16V / Non-Isolated PoL Module DC DC Converter 1 Output 1 ~ 16V 6A 3V - 36V Input
Lowest to $13.4125
FT230XS-U real image21586
FT230XS-U
FTDI, Future Technology Devices International Ltd
IC USB SERIAL BASIC UART 16SSOP
Lowest to $5.9399
BM04B-GHS-TBT(LF)(SN)(N) label picture
BM04B-GHS-TBT(LF)(SN)(N)
JST Sales America Inc.
CONN HEADER GH TOP 4POS 1.25MM
Lowest to $0.1782
NTA4153NT1G real image4110
NTA4153NT1G
ON Semiconductor
MOSFET N-CH 20V 915MA SOT-416
Lowest to $0.0543
FT232RL-REEL Real Image
FT232RL-REEL
FTDI, Future Technology Devices International Ltd
IC USB FS SERIAL UART 28-SSOP
Lowest to $5.2271
BMM150 label picture
BMM150
Bosch Sensortec
SENSOR FLIPCORE/HALL SPI 12WLCSP / Geomagnetic Sensor
Lowest to $0.7841
ULN2803ADW Real Image
ULN2803ADW
Texas Instruments
DARLINGTON TRANSISTOR ARRAY | TRANS 8NPN DARL 50V 0.5A 18SO
Lowest to $5.4647
ICM-42605 real image24295
ICM-42605
TDK InvenSense
IMU ACCEL/GYRO/TEMP I2C/SPI LGA
Lowest to $10.4542
EPM3128ATC100-10N real image
EPM3128ATC100-10N
Altera
IC CPLD 128MC 10NS 100TQFP
Lowest to $3.3015

Pricing & Ordering

Quantity Unit Price Ext. Price
4+ $15.7815 $63.1260
9+ $12.9489 $116.5401
14+ $12.5444 $175.6216
20+ $12.1397 $242.7940
25+ $11.7350 $293.3750
33+ $10.5210 $347.1930
* Prices exclude shipping and taxes. Shipping costs are calculated at checkout.
Estimate Shipping
Enter your destination to get a shipping estimate
*
Availability: 6,000 pieces
MOQ: 4 pcs
Order Increment : 1 pcs
*Need More Quantity? *Request a Bulk Quantity Quotation?
Ordering Guidelines

Shipping Information

Shipped from HK warehouse
Expected Shipping Date
Ship today if order in (HKT)
Supplier Lead-Time Call for availability
Estimate shipping fee
Enter your destination to get a shipping estimate
Estimate Shipping Fee

Contact Us

*
*
*

FRAUD PREVENTION REMINDERS

Recently, We have discovered that criminals falsely claimed to be WIN SOURCE to commit fraud. Please note that the only official website & email suffix are win-source.group, win-source.net, winsourcectl.com and winsourceelec.com

More details about fraud prevention
About Us
Customer Service
Solutions
Copyright © 2026 WIN SOURCE. All rights reserved.
For detailed contact information and office addresses in our key locations, including Irvine, Munich, Toronto, Singapore, Seoul, Bangalore, Bologna, Yamanashi, Hong Kong, and Mainland China, please visit our website.
Trust Guard Security Scanned
RFQ RFQ RFQ BOM BOM BOM API API API Sell Sell Sell your Excess