The category is 'Embedded - Microcontrollers'

  • All Manufacturers
  • Bit Size
  • Core Processor
  • Core Size
  • DMA Channels
  • Frequency
  • Has ADC
  • Lead Free
  • Moisture Sensitivity Level (MSL)
  • Mounting Type
  • Number of I/Os
  • Number of Pins
  • Number of Terminations
  • Lead Free:

    Lead Free

Image

Part Number

Manufacturer

Datasheet

Availability

Pricing(USD)

Quantity

RoHS

Factory Lead Time

Lifecycle Status

Contact Plating

Mount

Mounting Type

Package / Case

Surface Mount

Number of Pins

Weight

Data Converters

Number of I/Os

ROM(word)

Watchdog Timers

Operating Temperature

Packaging

Published

Series

JESD-609 Code

Pbfree Code

Part Status

Moisture Sensitivity Level (MSL)

Number of Terminations

Termination

ECCN Code

Terminal Finish

Additional Feature

HTS Code

Max Power Dissipation

Terminal Position

Terminal Form

Peak Reflow Temperature (Cel)

Supply Voltage

Terminal Pitch

Frequency

Time@Peak Reflow Temperature-Max (s)

Base Part Number

Pin Count

Qualification Status

Operating Supply Voltage

Supply Voltage-Max (Vsup)

Power Supplies

Supply Voltage-Min (Vsup)

Interface

Memory Size

Oscillator Type

Nominal Supply Current

Speed

RAM Size

Voltage - Supply (Vcc/Vdd)

uPs/uCs/Peripheral ICs Type

Number of Bits

Core Processor

Peripherals

Program Memory Type

Core Size

Program Memory Size

Connectivity

Supply Current-Max

Bit Size

Access Time

Has ADC

DMA Channels

Data Bus Width

PWM Channels

DAC Channels

Number of Timers/Counters

Address Bus Width

Density

Core Architecture

EEPROM Size

On Chip Program ROM Width

CPU Family

Max Frequency

Boundary Scan

Low Power Mode

Number of A/D Converters

Number of Programmable I/O

Format

Integrated Cache

RAM (words)

Number of UART Channels

Number of ADC Channels

Number of External Interrupts

Number of PWM Channels

Number of I2C Channels

On Chip Data RAM Width

Number of SPI Channels

Number of DMA Channels

Number of USB Channels

Number of Ethernet Channels

Height

Height Seated (Max)

Length

Width

Thickness

Radiation Hardening

REACH SVHC

RoHS Status

Lead Free

STM32L152CCT6

Mfr Part No

STM32L152CCT6

STMicroelectronics Datasheet

1600
In Stock

-

Min: 1

Mult: 1

10 Weeks

ACTIVE (Last Updated: 6 months ago)

Surface Mount

48-LQFP

YES

48

A/D 14x12b; D/A 2x12b

37

262144

Yes

-40°C~85°C TA

Tray

STM32L1

e3

Active

3 (168 Hours)

48

Matte Tin (Sn)

QUAD

GULL WING

3V

0.5mm

32MHz

STM32L152

3.6V

2/3.3V

1.8V

I2C, I2S, IrDA, LIN, SPI, UART, USART, USB

256kB

Internal

32K x 8

1.8V~3.6V

MICROCONTROLLER, RISC

ARM® Cortex®-M3

Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT

FLASH

32-Bit

256KB 256K x 8

I2C, IrDA, LINbus, SPI, UART/USART, USB

12.3mA

32

YES

YES

32b

YES

YES

9

ARM

8K x 8

8

CORTEX-M3

1.6mm

7mm

No

No SVHC

ROHS3 Compliant

Lead Free

PIC18F87K22-I/PTRSL

Mfr Part No

PIC18F87K22-I/PTRSL

Microchip Technology Datasheet

3635
In Stock

-

Min: 1

Mult: 1

9 Weeks

Surface Mount

80-TQFP

YES

80

A/D 24x12b

69

Yes

-40°C~85°C TA

Tray

PIC® XLP™ 18K

e3

yes

Active

3 (168 Hours)

80

Matte Tin (Sn) - annealed

1W

QUAD

GULL WING

260

3.3V

0.5mm

64MHz

40

PIC18F87K22

80

5.5V

3V

EBI/EMI, I2C, LIN, SPI, UART, USART

128kB

Internal

910μA

4K x 8

1.8V~5.5V

MICROCONTROLLER

8

PIC

Brown-out Detect/Reset, LVD, POR, PWM, WDT

FLASH

8-Bit

128KB 64K x 16

EBI/EMI, I2C, LINbus, SPI, UART/USART

32

YES

NO

8b

11

8b

1K x 8

PIC

1

16

10

2

1.0414mm

11.9888mm

11.9888mm

No

No SVHC

ROHS3 Compliant

Lead Free

DSPIC33FJ16GS502-I/MM

Mfr Part No

DSPIC33FJ16GS502-I/MM

Microchip Technology Datasheet

400
In Stock

-

Min: 1

Mult: 1

13 Weeks

Surface Mount

Surface Mount

28-VQFN Exposed Pad

28

A/D 16x10b; D/A 4x10b

21

Yes

-40°C~85°C TA

Tube

2009

dsPIC™ 33F

e3

yes

Active

1 (Unlimited)

28

Matte Tin (Sn) - annealed

QUAD

260

3.3V

0.65mm

40MHz

40

DSPIC33FJ16GS502

28

3.3V

I2C, IrDA, LIN, SPI, UART, USART

16kB

Internal

50 MHz

2K x 8

3V~3.6V

MICROCONTROLLER

dsPIC

Brown-out Detect/Reset, POR, PWM, WDT

FLASH

16-Bit

16KB 16K x 8

I2C, IrDA, LINbus, SPI, UART/USART

16

YES

NO

16b

YES

YES

3

FIXED-POINT

1024

1mm

6mm

No

ROHS3 Compliant

Lead Free

STM32L476JEY6TR

Mfr Part No

STM32L476JEY6TR

STMicroelectronics Datasheet

6400
In Stock

-

Min: 1

Mult: 1

12 Weeks

ACTIVE (Last Updated: 7 months ago)

Surface Mount

Surface Mount

72-UFBGA, WLCSP

72

A/D 16x12b; D/A 2x12b

57

524288

Yes

-40°C~85°C TA

Tape & Reel (TR)

STM32L4

Active

1 (Unlimited)

72

3A991.A.2

8542.31.00.01

434mW

BOTTOM

BALL

1.8V

0.4mm

STM32L476

3.6V

1.71V

CAN, I2C, SPI, UART, USART, USB

512kB

Internal

128K x 8

1.71V~3.6V

MICROCONTROLLER, RISC

ARM® Cortex®-M4

Brown-out Detect/Reset, DMA, LCD, PWM, WDT

FLASH

32-Bit

512KB 512K x 8

CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG

32

YES

YES

YES

YES

14

2

ARM

8

CORTEX-M4

80MHz

YES

YES

FLOATING-POINT

NO

128000

16

8

14

0.585mm

4.4084mm

3.7594mm

ROHS3 Compliant

Lead Free

PIC32MX250F128D-50I/PT

Mfr Part No

PIC32MX250F128D-50I/PT

Microchip Technology Datasheet

228
In Stock

-

Min: 1

Mult: 1

7 Weeks

Surface Mount

Surface Mount

44-TQFP

44

A/D 13x10b

33

-40°C~85°C TA

Tray

2011

PIC® 32MX

e3

Active

3 (168 Hours)

44

Matte Tin (Sn) - annealed

QUAD

GULL WING

260

3.3V

0.8mm

50MHz

40

PIC32MX250F128D

Not Qualified

3.6V

I2C, IrDA, LIN, SCI, SPI, UART, USART, USB

128kB

Internal

32K x 8

2.3V~3.6V

MICROCONTROLLER, RISC

MIPS32® M4K™

Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

FLASH

32-Bit

128KB 128K x 8

I2C, IrDA, LINbus, PMP, SPI, UART/USART, USB OTG

30mA

32

YES

YES

32b

PIC

PIC

34

13

5

2

1

1.05mm

10mm

10mm

No SVHC

ROHS3 Compliant

Lead Free

ATTINY841-MU

Mfr Part No

ATTINY841-MU

Microchip Technology Datasheet

147
In Stock

-

Min: 1

Mult: 1

7 Weeks

Tin

Surface Mount

Surface Mount

20-WFQFN Exposed Pad

20

123.008581mg

A/D 12x10b

12

4096

Yes

-40°C~85°C TA

Tray

1997

AVR® ATtiny

yes

Active

3 (168 Hours)

20

QUAD

NO LEAD

3.3V

0.5mm

16MHz

ATTINY841

Not Qualified

5.5V

1.8/5V

1.7V

I2C, SPI, UART, USART

8kB

Internal

512 x 8

1.7V~5.5V

MICROCONTROLLER, RISC

AVR

PWM

FLASH

8-Bit

8KB 8K x 8

I2C, SPI, UART/USART

8

YES

NO

8b

YES

NO

3

512 x 8

0.8mm

4mm

No SVHC

ROHS3 Compliant

Lead Free

PIC24F16KL401-I/SS

Mfr Part No

PIC24F16KL401-I/SS

Microchip Technology Datasheet

128
In Stock

-

Min: 1

Mult: 1

8 Weeks

Surface Mount

20-SSOP (0.209, 5.30mm Width)

YES

20

A/D 12x10b

18

Yes

-40°C~85°C TA

Tube

1997

PIC® XLP™ 24F

e3

Active

1 (Unlimited)

20

Matte Tin (Sn) - annealed

ALSO OPERATES 1.8V AT 8MHZ

DUAL

GULL WING

260

3.3V

0.65mm

32MHz

40

PIC24F16KL401

20

3.6V

3V

I2C, IrDA, LIN, SPI, UART, USART

16kB

Internal

1K x 8

1.8V~3.6V

MICROCONTROLLER

PIC

Brown-out Detect/Reset, HLVD, POR, PWM, WDT

FLASH

16-Bit

16KB 5.5K x 24

I2C, IrDA, LINbus, SPI, UART/USART

16

YES

NO

16b

YES

4

512 x 8

PIC

12

2

1.85mm

7.5mm

5.6mm

No

ROHS3 Compliant

Lead Free

PIC24FJ64GB002-I/SO

Mfr Part No

PIC24FJ64GB002-I/SO

Microchip Technology Datasheet

4
In Stock

-

Min: 1

Mult: 1

17 Weeks

Surface Mount

Surface Mount

28-SOIC (0.295, 7.50mm Width)

28

A/D 9x10b

19

Yes

-40°C~85°C TA

Tube

1995

PIC® XLP™ 24F

e3

yes

Active

1 (Unlimited)

28

SMD/SMT

Matte Tin (Sn)

DUAL

GULL WING

260

2.5V

32MHz

PIC24FJ64GB002

28

I2C, IrDA, LIN, SPI, UART, USART, USB

64kB

Internal

8K x 8

2V~3.6V

MICROCONTROLLER

16

PIC

Brown-out Detect/Reset, LVD, POR, PWM, WDT

FLASH

16-Bit

64KB 22K x 24

I2C, IrDA, SPI, UART/USART, USB OTG

16

YES

YES

16b

512 kb

PIC

1

9

5

2

2.3622mm

15.3924mm

7.493mm

No

No SVHC

ROHS3 Compliant

Lead Free

STM32F439ZIT6

Mfr Part No

STM32F439ZIT6

STMicroelectronics Datasheet

80
In Stock

-

Min: 1

Mult: 1

12 Weeks

ACTIVE (Last Updated: 7 months ago)

Surface Mount

144-LQFP

YES

144

A/D 24x12b; D/A 2x12b

114

Yes

-40°C~85°C TA

Tray

STM32F4

Active

3 (168 Hours)

144

500mW

QUAD

GULL WING

3.3V

0.5mm

180MHz

STM32F439

CAN, EBI/EMI, Ethernet, I2C, I2S, IrDA, LIN, SDIO, SPI, UART, USART, USB

2MB

Internal

256K x 8

1.8V~3.6V

MICROCONTROLLER, RISC

ARM® Cortex®-M4

Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT

FLASH

32-Bit

2MB 2M x 8

CANbus, EBI/EMI, Ethernet, I2C, IrDA, LINbus, SPI, UART/USART, USB OTG

32

YES

YES

32b

YES

14

ARM

4

24

3

2

1

1.4mm

20mm

20mm

No

No SVHC

ROHS3 Compliant

Lead Free

PIC18LF46K22-I/MV

Mfr Part No

PIC18LF46K22-I/MV

Microchip Technology Datasheet

11
In Stock

  • 1: $11.517338
  • 10: $10.865413
  • 100: $10.250390
  • 500: $9.670179
  • View all price

Min: 1

Mult: 1

16 Weeks

Surface Mount

40-UFQFN Exposed Pad

YES

40

A/D 30x10b

35

Yes

-40°C~85°C TA

Tube

2006

PIC® XLP™ 18K

e3

Active

1 (Unlimited)

40

3A991.A.2

Matte Tin (Sn)

ALSO OPERATES 1.8 V MINIMUM SUPPLY AT 20 MHZ

8542.31.00.01

1W

QUAD

260

3V

0.4mm

64MHz

40

PIC18LF46K22

40

3.6V

2/3.3V

I2C, SPI, UART, USART

64kB

Internal

3.8K x 8

1.8V~3.6V

MICROCONTROLLER, RISC

PIC

Brown-out Detect/Reset, HLVD, POR, PWM, WDT

FLASH

8-Bit

64KB 32K x 16

I2C, SPI, UART/USART

12mA

8

YES

NO

8b

YES

YES

7

1K x 8

16

PIC

36

0.55mm

5mm

No

ROHS3 Compliant

Lead Free

PIC18F65J90-I/PT

Mfr Part No

PIC18F65J90-I/PT

Microchip Technology Datasheet

66249665
In Stock

Min: 1

Mult: 1

22 Weeks

Surface Mount

Surface Mount

64-TQFP

64

A/D 12x10b

51

Yes

-40°C~85°C TA

Tray

2007

PIC® 18J

e3

yes

Active

3 (168 Hours)

64

SMD/SMT

Matte Tin (Sn)

1W

QUAD

GULL WING

260

2.5V

0.5mm

40MHz

40

PIC18F65J90

64

3.6V

I2C, SPI, UART, USART

32kB

Internal

2K x 8

2V~3.6V

MICROCONTROLLER

PIC

Brown-out Detect/Reset, LCD, LVD, POR, PWM, WDT

FLASH

8-Bit

32KB 16K x 16

I2C, SPI, UART/USART

8

YES

NO

8b

4

256 kb

PIC

12

2

1

1.05mm

10mm

10mm

No

No SVHC

ROHS3 Compliant

Lead Free

PIC16F689-I/SO

Mfr Part No

PIC16F689-I/SO

Microchip Technology Datasheet

-

-

Min: 1

Mult: 1

7 Weeks

Surface Mount

Surface Mount

20-SOIC (0.295, 7.50mm Width)

20

A/D 12x10b

18

4096

Yes

-40°C~85°C TA

Tube

2006

PIC® 16F

e3

yes

Active

1 (Unlimited)

20

EAR99

Matte Tin (Sn)

800mW

DUAL

GULL WING

260

5V

20MHz

40

PIC16F689

20

5.5V

4.5V

I2C, SPI, SSP, UART, USART

7kB

Internal

220μA

256 x 8

2V~5.5V

MICROCONTROLLER, RISC

8

PIC

Brown-out Detect/Reset, POR, WDT

FLASH

8-Bit

7KB 4K x 14

I2C, SPI, UART/USART

8

20 μs

YES

NO

8b

YES

2

8b

256 x 8

PIC

12

1

2.3622mm

12.7762mm

7.493mm

No

No SVHC

ROHS3 Compliant

Lead Free

TMS5701227CZWTQQ1

Mfr Part No

TMS5701227CZWTQQ1

Texas Instruments Datasheet

36
In Stock

-

Min: 1

Mult: 1

12 Weeks

ACTIVE (Last Updated: 5 days ago)

Surface Mount

337-LFBGA

YES

337

A/D 24x12b

101

Yes

-40°C~125°C TA

Tray

Automotive, AEC-Q100, Hercules™ TMS570 ARM® Cortex®-R

e1

yes

Active

3 (168 Hours)

337

Tin/Silver/Copper (Sn/Ag/Cu)

BOTTOM

BALL

1.2V

0.8mm

180MHz

5701227

1.14V

CAN, EBI/EMI, Ethernet, I2C, LIN, SCI, SPI, UART, USART

1.3MB

External

192K x 8

1.14V~3.6V

MICROCONTROLLER, RISC

ARM® Cortex®-R4F

DMA, POR, PWM, WDT

FLASH

32-Bit Dual-Core

1.25MB 1.25M x 8

CANbus, EBI/EMI, Ethernet, FlexRay, I2C, LINbus, MibSPI, SPI, UCI, UART/USART

32

YES

YES

YES

NO

10 Mb

ARM

64K x 8

101

2

1.4mm

16mm

16mm

900μm

ROHS3 Compliant

Lead Free

PIC16F1508-E/SS

Mfr Part No

PIC16F1508-E/SS

Microchip Technology Datasheet

5360
In Stock

-

Min: 1

Mult: 1

8 Weeks

Surface Mount

20-SSOP (0.209, 5.30mm Width)

YES

20

A/D 12x10b; D/A 1x5b

17

Yes

-40°C~125°C TA

Tube

2004

PIC® XLP™ 16F

e3

Active

2 (1 Year)

20

EAR99

Matte Tin (Sn)

800mW

DUAL

GULL WING

260

5V

0.65mm

20MHz

40

PIC16F1508

20

5.5V

2.5/5V

2.5V

I2C, LIN, SPI, UART, USART

7kB

Internal

850μA

256 x 8

2.3V~5.5V

MICROCONTROLLER, RISC

PIC

Brown-out Detect/Reset, POR, PWM, WDT

FLASH

8-Bit

7KB 4K x 14

I2C, LINbus, SPI, UART/USART

8

YES

NO

8b

3

8b

PIC

12

4

1

1.85mm

7.5mm

5.6mm

No

No SVHC

ROHS3 Compliant

Lead Free

AT89LP51RD2-20JU

Mfr Part No

AT89LP51RD2-20JU

Microchip Technology Datasheet

11
In Stock

-

Min: 1

Mult: 1

8 Weeks

Surface Mount

Surface Mount

44-LCC (J-Lead)

44

A/D 7x10b

40

Yes

-40°C~85°C TA

Tube

1997

89LP

e3

yes

Active

2 (1 Year)

44

Matte Tin (Sn) - annealed

QUAD

J BEND

245

3V

1.27mm

20MHz

40

AT89LP51RD2

5.5V

2.5/5V

2.4V

2-Wire, EBI/EMI, I2C, SPI, UART, USART

64kB

Internal

2.25K x 8

2.4V~5.5V

MICROCONTROLLER

8051

Brown-out Detect/Reset, POR, PWM, WDT

FLASH

8-Bit

64KB 64K x 8

EBI/EMI, I2C, SPI, UART/USART

8

YES

NO

8b

YES

YES

3

16

36

4.572mm

16.586mm

No

ROHS3 Compliant

Lead Free

PIC12F1822-I/MF

Mfr Part No

PIC12F1822-I/MF

Microchip Technology Datasheet

161
In Stock

-

Min: 1

Mult: 1

8 Weeks

Surface Mount

8-VDFN Exposed Pad

YES

8

A/D 4x10b; D/A 1x5b

6

Yes

-40°C~85°C TA

Tube

2010

PIC® XLP™ 12F

e3

yes

Active

1 (Unlimited)

8

EAR99

Matte Tin (Sn) - annealed

800mW

DUAL

260

2.3V

32MHz

40

PIC12F1822

8

5.5V

2/5V

I2C, LIN, SPI, UART, USART

3.5kB

Internal

145μA

128 x 8

1.8V~5.5V

MICROCONTROLLER, RISC

PIC

Brown-out Detect/Reset, POR, PWM, WDT

FLASH

8-Bit

3.5KB 2K x 14

I2C, LINbus, SPI, UART/USART

8

YES

NO

8b

NO

3

8b

256 x 8

PIC

4

1

880μm

3mm

3mm

No

No SVHC

ROHS3 Compliant

Lead Free

PIC16F84-04/P

Mfr Part No

PIC16F84-04/P

Microchip Technology Datasheet

8800
In Stock

-

Min: 1

Mult: 1

3 Weeks

Through Hole

18-DIP (0.300, 7.62mm)

NO

18

13

Yes

0°C~70°C TA

Tube

PIC® 16F

e3

yes

Active

1 (Unlimited)

18

Through Hole

EAR99

Matte Tin (Sn)

700mW

DUAL

5V

2.54mm

4MHz

PIC16F84

18

6V

5V

4V

1.8kB

External

68 x 8

4V~6V

MICROCONTROLLER, RISC

8

PIC

POR, WDT

FLASH

8-Bit

1.75KB 1K x 14

8

4 μs

NO

NO

8b

NO

NO

1

64 x 8

PIC

0

3.429mm

22.86mm

6.858mm

No

No SVHC

ROHS3 Compliant

Lead Free

ATSAMD20E16A-AUT

Mfr Part No

ATSAMD20E16A-AUT

Microchip Technology Datasheet

8004
In Stock

Min: 1

Mult: 1

16 Weeks

Tin

Surface Mount

32-TQFP

YES

32

72.801575mg

A/D 10x12b; D/A 1x10b

26

Yes

-40°C~85°C TA

Tape & Reel (TR)

2013

SAM D20E

e3

yes

Active

3 (168 Hours)

32

QUAD

GULL WING

260

3.3V

0.8mm

48MHz

30

ATSAMD20E16

Not Qualified

1.8/3.3V

I2C, SPI, UART, USART

64kB

Internal

8K x 8

1.62V~3.6V

MICROCONTROLLER, RISC

ARM® Cortex®-M0+

Brown-out Detect/Reset, POR, WDT

FLASH

32-Bit

64KB 64K x 8

I2C, SPI, UART/USART

32

YES

NO

32b

YES

6

512 kb

ARM

CORTEX-M0

26

10

1.2mm

7mm

ROHS3 Compliant

Lead Free

PIC32MZ1024ECG100-I/PT

Mfr Part No

PIC32MZ1024ECG100-I/PT

Microchip Technology Datasheet

10400
In Stock

  • 1: $16.105109
  • 10: $15.193499
  • 100: $14.333490
  • 500: $13.522160
  • View all price

Min: 1

Mult: 1

14 Weeks

Surface Mount

100-TQFP

YES

100

657.000198mg

A/D 40x10b

78

Yes

-40°C~85°C TA

Tray

2006

PIC® 32MZ

e3

Active

3 (168 Hours)

100

Matte Tin (Sn) - annealed

QUAD

GULL WING

260

3.3V

0.4mm

200MHz

40

PIC32MZ1024ECG

2.3V

EBI/EMI, Ethernet, I2C, I2S, SPI, UART, USART, USB

1MB

Internal

512K x 8

2.3V~3.6V

MICROCONTROLLER

MIPS32® microAptiv™

Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

FLASH

32-Bit

1MB 1M x 8

EBI/EMI, Ethernet, I2C, SPI, SQI, UART/USART, USB OTG

32

YES

YES

32b

YES

9

PIC

PIC

40

5

6

1

1.05mm

12mm

12mm

No

No SVHC

ROHS3 Compliant

Lead Free

DSPIC33EP32MC204-I/PT

Mfr Part No

DSPIC33EP32MC204-I/PT

Microchip Technology Datasheet

8000
In Stock

-

Min: 1

Mult: 1

1 Weeks

Surface Mount

Surface Mount

44-TQFP

44

A/D 9x10b/12b

35

Yes

-40°C~85°C TA

Tray

2012

dsPIC™ 33EP

e3

Active

1 (Unlimited)

44

3A001.A.3

Matte Tin (Sn) - annealed

QUAD

GULL WING

260

3.3V

0.8mm

70MHz

40

DSPIC33EP32MC204

44

3.3V

I2C, IrDA, LIN, SPI, UART, USART

32kB

Internal

2K x 16

3V~3.6V

MICROCONTROLLER

dsPIC

Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT

FLASH

16-Bit

32KB 10.7K x 24

I2C, IrDA, LINbus, QEI, SPI, UART/USART

16

YES

YES

16b

5

FLOATING-POINT

9

6

2

1.05mm

10mm

10mm

No

ROHS3 Compliant

Lead Free