Call us: +86 0755-82563503

Currency: $ US Dollar

Items : %s%s

Microcontrollers

Compare Image Name Manufacturer Pricing(USD) Quantity Weight(Kg) Size(LxWxH) Datasheet Factory Lead Time Mount Packaging Published Series Pbfree Code Part Status Moisture Sensitivity Level (MSL) Number of Terminations Termination ECCN Code Max Operating Temperature Min Operating Temperature Operating Supply Voltage Length RoHS Status Lead Free Radiation Hardening Number of Pins Additional Feature Package / Case Interface REACH SVHC Reach Compliance Code Density Frequency Height Width Mounting Type Operating Temperature Technology Height Seated (Max) Capacitance HTS Code Nominal Supply Current JESD-609 Code Terminal Finish Terminal Position Terminal Form Peak Reflow Temperature (Cel) Supply Voltage Time@Peak Reflow Temperature-Max (s) Base Part Number Pin Count Temperature Grade Surface Mount Terminal Pitch JESD-30 Code Supply Voltage-Min (Vsup) Operating Temperature (Max) Operating Temperature (Min) Subcategory Qualification Status Power Supplies Supply Voltage-Max (Vsup) Max Power Dissipation Watchdog Timer Supplier Device Package Core Architecture Speed Power Dissipation-Max Oscillator Type Access Time Frequency (Max) Screening Level Memory Size Memory Type Core Processor RAM Size Number of Bits Number of I/O Address Bus Width Supply Current-Max Boundary Scan Low Power Mode External Data Bus Width Format Barrel Shifter Data Bus Width Number of Programmable I/O Bus Compatibility Number of Timers/Counters uPs/uCs/Peripheral ICs Type Peripherals Clock Frequency RAM (words) Number of Serial I/Os Number of External Interrupts Bit Size Has ADC DMA Channels PWM Channels UV Erasable DAC Channels ROM Programmability On Chip Data RAM Width Voltage - Supply (Vcc/Vdd) Number of Timers ROM (words) RAM (bytes) Number of ADC Channels Number of PWM Channels On Chip Program ROM Width CPU Family Integrated Cache Number of USB Channels Internal Bus Architecture EEPROM Size Program Memory Type Connectivity Core Size Program Memory Size Data Converter Device Core SPI Data Bus Width (bit) Family Name Instruction Set Architecture Interface Type Lead Shape Mounting Package Height Package Length Package Width PCB changed Standard Package Name Supplier Package Typical Operating Supply Voltage (V) UART ECCN (US) I2C Programmability No. of Timers CECC Qualified Maximum Expanded Memory Size
MCF52110CEP66 MCF52110CEP66 NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2007 MCF521xx Obsolete 3 (168 Hours) ROHS3 Compliant 64-VFQFN Exposed Pad Surface Mount -40°C~85°C TA MCF52110 66MHz Internal Coldfire V2 16K x 8 43 DMA, LVD, POR, PWM, WDT 3V~3.6V FLASH I2C, SPI, UART/USART 32-Bit 128KB 128K x 8 A/D 8x12b
PIC24EP32GP203T-E/TL PIC24EP32GP203T-E/TL Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tape & Reel (TR) 2012 Automotive, AEC-Q100, PIC® 24EP Obsolete 1 (Unlimited) 36 3A001.A.3 3.3V ROHS3 Compliant No 36 36-VFTLA Exposed Pad I2C, IrDA, LIN, SPI, UART, USART 70MHz Surface Mount -40°C~125°C TA CMOS 1mm e4 Nickel/Palladium/Gold (Ni/Pd/Au) QUAD 260 3.3V 40 PIC24EP32GP203 36 Microcontrollers 3.6V Yes 60 MHz Internal 32kB PIC 2K x 16 25 16b 5 MICROCONTROLLER Brown-out Detect/Reset, DMA, POR, PWM, WDT 16 YES YES YES NO 3V~3.6V 10922 24 PIC FLASH I2C, IrDA, LINbus, SPI, UART/USART 16-Bit 32KB 10.7K x 24 A/D 8x10b/12b
R5F2135CCDFP#50 R5F2135CCDFP#50 Renesas Electronics America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 24 Weeks Tape & Reel (TR) 2010 R8C/3x/35C Active 3 (168 Hours) 85°C -40°C ROHS3 Compliant 52-LQFP I2C, LIN, UART, USART 20MHz Surface Mount -40°C~85°C TA R5F2135C 52-LQFP (10x10) R8C 20MHz Internal 128kB FLASH R8C 10K x 8 47 POR, PWM, Voltage Detect, WDT 1.8V~5.5V 4K x 8 FLASH I2C, LINbus, SIO, SSU, UART/USART 16-Bit 128KB 128K x 8 A/D 12x10b; D/A 2x8b
PIC32MX440F128L-80I/PT PIC32MX440F128L-80I/PT Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks Surface Mount Tray 2007 PIC® 32MX yes Active 3 (168 Hours) 100 SMD/SMT 12mm ROHS3 Compliant Lead Free No 100 100-TQFP I2C, IrDA, LIN, SPI, UART, USART, USB No SVHC 1 Mb 80MHz 1.05mm 12mm Surface Mount -40°C~85°C TA CMOS 24mA e3 Matte Tin (Sn) - annealed QUAD GULL WING 260 3.3V 40 PIC32MX440F128L 100 0.4mm Microcontrollers 3.6V Yes PIC Internal 128kB MIPS32® M4K™ 32K x 8 85 32b 32b MICROCONTROLLER, RISC Brown-out Detect/Reset, DMA, POR, PWM, WDT 32 YES YES 2.3V~3.6V 16 5 PIC 2 FLASH I2C, IrDA, LINbus, PMP, SPI, UART/USART, USB OTG 32-Bit 128KB 128K x 8 A/D 16x10b
MB90347ASPFV-G-231 MB90347ASPFV-G-231 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 9 Weeks Tray F2MC-16LX MB90340 Active 3 (168 Hours) 105°C -40°C ROHS3 Compliant 100-LQFP CAN, EBI/EMI, LIN, SCI, UART, USART 24MHz Surface Mount -40°C~105°C TA -16F 100-LQFP (14x14) 24MHz External 128kB Mask ROM F2MC-16LX 6K x 8 82 DMA, POR, WDT 3.5V~5.5V Mask ROM CANbus, EBI/EMI, LINbus, SCI, UART/USART 16-Bit 128KB 128K x 8 A/D 16x8/10b
S9S12GA192F0CLH S9S12GA192F0CLH NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 12 Weeks Tray 2008 HCS12 Active 3 (168 Hours) 64 10mm ROHS3 Compliant 64-LQFP 10mm Surface Mount -40°C~85°C TA CMOS QUAD GULL WING 5V YES 0.5mm S-PQFP-G64 3.13V Microcontrollers Not Qualified 3.3/5V 5.5V 25MHz Internal AEC-Q100 12V1 11K x 8 54 23.5mA MICROCONTROLLER LVD, POR, PWM, WDT 16MHz 16 YES NO YES 3.13V~5.5V 196608 11264 CPU12 4K x 8 FLASH CANbus, IrDA, LINbus, SCI, SPI 16-Bit 192KB 192K x 8 A/D 16x12b; D/A 2x8b
XE162FM72F80LRABFXUMA1 XE162FM72F80LRABFXUMA1 Infineon Technologies 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) Not For New Designs 3 (168 Hours) 64 3A991.A.2 10mm ROHS3 Compliant 10mm CMOS 1.6mm 8542.31.00.01 QUAD GULL WING NOT SPECIFIED 1.5V NOT SPECIFIED INDUSTRIAL YES 0.5mm S-PQFP-G64 85°C -40°C 80 MHz 40 MICROCONTROLLER 40MHz 16 YES YES YES NO FLASH 589824 32768 8
MC9S12GC128MPBE MC9S12GC128MPBE NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray HCS12 Obsolete 3 (168 Hours) ROHS3 Compliant 52-LQFP Surface Mount -40°C~125°C TA MC9S12GC128 25MHz Internal 4K x 8 35 POR, PWM, WDT 2.35V~5.5V FLASH EBI/EMI, SCI, SPI 16-Bit 128KB 128K x 8 A/D 8x10b
Z8F2401VN020SC Z8F2401VN020SC Rochester Electronics, LLC 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Encore!® Obsolete 3 (168 Hours) 44 16.585mm Non-RoHS Compliant 44-LCC (J-Lead) unknown 16.585mm Surface Mount 0°C~70°C TA CMOS 4.57mm e0 TIN LEAD QUAD J BEND 225 3.3V 30 44 YES 1.27mm S-PQCC-J44 3V 3.6V 20MHz Internal eZ8 2K x 8 31 MICROCONTROLLER Brown-out Detect/Reset, DMA, POR, PWM, WDT 20MHz 8 YES YES YES NO 3V~3.6V FLASH I2C, IrDA, SPI, UART/USART 8-Bit 24KB 24K x 8 A/D 8x10b
MB90349CASPFV-GS-748E1 MB90349CASPFV-GS-748E1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 26 Weeks Tray F2MC-16LX MB90340 Active 3 (168 Hours) 105°C -40°C ROHS3 Compliant 100-LQFP CAN, EBI/EMI, I2C, LIN, SCI, UART, USART 24MHz Surface Mount -40°C~105°C TA -16F 100-LQFP (14x14) 24MHz External 256kB Mask ROM F2MC-16LX 16K x 8 82 DMA, POR, WDT 3.5V~5.5V Mask ROM CANbus, EBI/EMI, I2C, LINbus, SCI, UART/USART 16-Bit 256KB 256K x 8 A/D 24x8/10b
S6E1A12B0AGN2B000 S6E1A12B0AGN2B000 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 23 Weeks Tray FM0+ S6E1A1 Active 3 (168 Hours) ROHS3 Compliant 32-WFQFN Exposed Pad Surface Mount -40°C~105°C TA 8542.31.00.01 40MHz Internal ARM® Cortex®-M0+ 6K x 8 23 MICROCONTROLLER, RISC DMA, LVD, POR, PWM, WDT 2.7V~5.5V FLASH CSIO, I2C, LINbus, UART/USART 32-Bit 88KB 88K x 8 A/D 5x12b
MB96F346RSBPMC-GS-N2E2 MB96F346RSBPMC-GS-N2E2 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 27 Weeks Tray F2MC-16FX MB96340 Obsolete 3 (168 Hours) ROHS3 Compliant 100-LQFP CAN, EBI/EMI, I2C, LIN, SCI, UART, USART 56MHz Surface Mount -40°C~105°C TA Internal 288kB F2MC-16FX 16K x 8 82 DMA, LVD, LVR, POR, PWM, WDT 3V~5.5V FLASH CANbus, EBI/EMI, I2C, LINbus, SCI, UART/USART 16-Bit 288KB 288K x 8 A/D 24x10b
CY8C3445LTI-086 CY8C3445LTI-086 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2005 PSOC® 3 CY8C34xx yes Obsolete 3 (168 Hours) 68 8mm ROHS3 Compliant 68-VFQFN Exposed Pad EBI/EMI, I2C, LIN, SPI, UART, USART 50MHz 8mm Surface Mount -40°C~85°C TA CMOS 1mm 8542.39.00.01 e4 Nickel/Palladium/Gold (Ni/Pd/Au) QUAD NO LEAD 260 3.3V 30 CY8C3445 68 YES 0.4mm S-XQCC-N68 1.71V Other Microprocessor ICs Not Qualified 2/5V 5.5V Internal 32kB 8051 4K x 8 38 YES I2C; USB CapSense, DMA, POR, PWM, WDT 4000 N 1.71V~5.5V 1K x 8 FLASH EBI/EMI, I2C, LINbus, SPI, UART/USART 8-Bit 32KB 32K x 8 A/D 16x12b; D/A 2x8b
MB90387SPMT-GS-259E1 MB90387SPMT-GS-259E1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 20 Weeks Tray F2MC-16LX MB90385 Active 3 (168 Hours) 105°C -40°C ROHS3 Compliant 48-LQFP CAN, SCI, UART, USART 16MHz Surface Mount -40°C~105°C TA -16F 48-LQFP (7x7) 16MHz External 64kB Mask ROM F2MC-16LX 2K x 8 36 POR, WDT 3.5V~5.5V Mask ROM CANbus, SCI, UART/USART 16-Bit 64KB 64K x 8 A/D 8x8/10b
P89LPC932FDH,529 P89LPC932FDH,529 NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Obsolete RoHS Compliant 28 8051 26 Flash 8KB 80C51 1 8 89LP CISC I2C/SPI/UART Gull-wing Surface Mount 0.95(Max) 9.8(Max) 4.5(Max) 28 SOP TSSOP 2.5|3.3 1 EAR99 1 Yes 2 No 64KB
MB95004APMT-G-134E1 MB95004APMT-G-134E1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 1 (Unlimited) ROHS3 Compliant
CY90352ESPMC-GS-248E1 CY90352ESPMC-GS-248E1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 20 Weeks Tray F2MC-16LX MB90350E Active 3 (168 Hours) ROHS3 Compliant 64-LQFP Surface Mount -40°C~125°C TA 24MHz Internal F2MC-16LX 4K x 8 51 DMA, LVD, POR, WDT 3.5V~5.5V Mask ROM CANbus, EBI/EMI, I2C, LINbus, UART/USART 16-Bit 128KB 128K x 8 A/D 15x8/10b
N8097-90 N8097-90 Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Non-RoHS Compliant CMOS 8542.31.00.01 MICROCONTROLLER
DSPIC33EP256MC204-H/ML DSPIC33EP256MC204-H/ML Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube Automotive, AEC-Q100, dsPIC™ 33EP Obsolete 1 (Unlimited) 44 8mm ROHS3 Compliant 44 44-VQFN Exposed Pad I2C, IrDA, LIN, SPI, UART, USART 8mm Surface Mount -40°C~150°C TA CMOS 1mm QUAD NO LEAD 3.3V DSPIC33EP256MC204 YES 0.65mm 3V 3.6V 60 MIPs Internal AEC-Q100; TS 16949 dsPIC 16K x 16 35 YES YES FIXED POINT YES DIGITAL SIGNAL PROCESSOR, OTHER Brown-out Detect/Reset, DMA, Motor Control PWM, POR, PWM, WDT 60MHz 3V~3.6V MULTIPLE FLASH I2C, IrDA, LINbus, QEI, SPI, UART/USART 16-Bit 256KB 85.5K x 24 A/D 9x10b/12b
PIC16F721-I/SS PIC16F721-I/SS Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 8 Weeks Tube 2009 PIC® 16F Active 1 (Unlimited) 20 7.2mm ROHS3 Compliant No 20 20-SSOP (0.209, 5.30mm Width) I2C, SPI, UART, USART No SVHC 16MHz 1.75mm 5.3mm Surface Mount -40°C~85°C TA CMOS e3 Matte Tin (Sn) - annealed DUAL GULL WING 260 3.3V 40 PIC16F721 20 YES 0.65mm Microcontrollers 2/5V 5.5V 800mW Yes Internal 7kB PIC 256 x 8 8 17 8b 3 MICROCONTROLLER, RISC Brown-out Detect/Reset, POR, PWM, WDT 8 YES NO 1.8V~5.5V 4096 12 1 PIC FLASH I2C, SPI, UART/USART 8-Bit 7KB 4K x 14 A/D 12x8b
PIC18F2520-E/ML PIC18F2520-E/ML Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 13 Weeks Surface Mount Tube 2007 PIC® 18F yes Active 1 (Unlimited) 28 5V 6mm Non-RoHS Compliant Lead Free No 28 28-VQFN Exposed Pad I2C, SPI, UART, USART No SVHC 40MHz Surface Mount -40°C~125°C TA CMOS 1mm e3 Matte Tin (Sn) - annealed QUAD 260 5V 40 PIC18F2520 28 0.65mm Microcontrollers 5V 1W Yes Internal 40 μs 32kB PIC 1.5K x 8 25 8b 4 MICROCONTROLLER, RISC Brown-out Detect/Reset, HLVD, POR, PWM, WDT 8 YES NO NO 4.2V~5.5V 2 16 PIC 256 x 8 FLASH I2C, SPI, UART/USART 8-Bit 32KB 16K x 16 A/D 10x10b
ZGP323LSS2016G ZGP323LSS2016G Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2004 Z8® GP™ yes Obsolete 1 (Unlimited) 20 12.775mm ROHS3 Compliant 20-SOIC (0.295, 7.50mm Width) 7.5mm Surface Mount 0°C~70°C TA CMOS 2.65mm 8542.31.00.01 e3 MATTE TIN DUAL GULL WING 260 3V 40 ZGP323L 20 YES 1.27mm R-PDSO-G20 2V Microcontrollers Not Qualified 2.5/3.3V 3.6V 8MHz Internal Z8 237 x 8 16 10mA MICROCONTROLLER HLVD, POR, WDT 8MHz 8 NO NO NO NO 2V~3.6V Z8 OTP 8-Bit 16KB 16K x 8
MB95F776LNPMC2-G-SNE2 MB95F776LNPMC2-G-SNE2 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 1 (Unlimited) ROHS3 Compliant
PIC24FV16KM204T-I/ML PIC24FV16KM204T-I/ML Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) 2013 PIC® XLP™ 24F Obsolete 1 (Unlimited) 44 8mm ROHS3 Compliant IT ALSO OPERATES 2V AT 8MHZ 44-VQFN Exposed Pad 8mm Surface Mount -40°C~85°C TA CMOS 1mm 8542.31.00.01 e3 Matte Tin (Sn) QUAD NO LEAD 260 5V 40 PIC24FV16KM204 YES 0.635mm S-PQCC-N44 3.2V Microcontrollers Not Qualified 2.5/5V 5.5V 32MHz Internal PIC 2K x 8 37 10mA NO FIXED-POINT MICROCONTROLLER, RISC Brown-out Detect/Reset, LVD, POR, PWM, WDT 32MHz 1024 2 3 16 YES NO YES YES 16 2V~5V 1 5461 24 NO 512 x 8 FLASH I2C, IrDA, LINbus, SPI, UART/USART 16-Bit 16KB 5.5K x 24 A/D 22x10b/12b; D/A 2x8b
S1C17M12F101100-250 S1C17M12F101100-250 Epson Electronics America Inc-Semiconductor Div 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 20 Weeks Active
CY9AF341NBBGL-GE1 CY9AF341NBBGL-GE1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 18 Weeks Tray FM3 MB9A340NB Active 3 (168 Hours) 112 10mm ROHS3 Compliant 112-LFBGA 10mm Surface Mount -40°C~85°C TA CMOS 1.45mm BOTTOM BALL NOT SPECIFIED 2.7V NOT SPECIFIED YES 0.8mm S-PBGA-B112 1.65V 3.6V 40MHz Internal ARM® Cortex®-M3 16K x 8 83 25 16 MICROCONTROLLER, RISC DMA, LVD, POR, PWM, WDT 48MHz 32 YES YES YES NO 1.65V~3.6V 16384 8 FLASH CSIO, EBI/EMI, I2C, UART/USART, USB 32-Bit 96KB 96K x 8 A/D 24x12b
PIC16LC61-04I/SO PIC16LC61-04I/SO Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 yes 1 (Unlimited) 18 85°C -40°C RoHS Compliant No 18 SOIC CMOS 2.642mm e3 Matte Tin (Sn) DUAL GULL WING 260 5V 40 18 INDUSTRIAL YES 3V Microcontrollers 3.3/5V 6V PIC 800mW 4MHz 1.8kB EPROM 36B 13 2.5mA 8b 13 1 MICROCONTROLLER, RISC 8 NO NO NO NO OTPROM 36 14 PIC
CP8685AT CP8685AT Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 3 (168 Hours) ROHS3 Compliant
CY96F637RBPMC-GS-UJF4E1 CY96F637RBPMC-GS-UJF4E1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 17 Weeks F2MC-16FX MB96630 Active 3 (168 Hours) ROHS3 Compliant 80-LQFP Surface Mount -40°C~125°C TA 32MHz Internal F2MC-16FX 28K x 8 64 DMA, LVD, POR, PWM, WDT 2.7V~5.5V FLASH CANbus, I2C, LINbus, SCI, UART/USART 16-Bit 416KB 416K x 8 A/D 21x8/10b SAR
CY90F884CPMC-GSE1 CY90F884CPMC-GSE1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Tray F2MC-16LX MB90880 Obsolete 3 (168 Hours) ROHS3 Compliant 100-LQFP Surface Mount -40°C~85°C TA 33MHz External F2MC-16LX 30K x 8 83 DMA, POR, PWM, WDT 2.7V~3.6V FLASH I2C, Serial I/O, UART/USART 16-Bit 512KB 512K x 8 A/D 20x8/10b
Settings Need Help?
Top FAQ's

How can I quickly find answers to my questions?

Please visit the Help & Support area of our website to find information regarding ordering, shipping, delivery and more.

What is my Order Status?

Registered users can track orders from their account dropdown, or click here. *Order Status may take 12 hours to update after initial order is placed.

How do I return product?

Users can begin the returns process by starting with our Returns Page.

How do I find price and availability?

Quotes can be created by registered users in myLists.

How do I create a 'HK JDW' Account?

Visit the Registration Page and enter the required information. You will receive an email confirmation when your registration is complete.

United Kingdom/GBP Summary
Fast Shipping Fast Delivery

Orders are typically delivered to United Kingdom within 48 hours depending on location.

Free Shipping Free Shipping

Free delivery to United Kingdom on orders of £33 or more. A delivery charge of £12 will be billed on all orders less than £33.

Incoterms Incoterms

DDP (Duty and customs paid by HK JDW)

Payment Options Payment Types

Credit account for qualified institutions and businesses

Payment in Advance by Wire Transfer

Visa Mastercard American Express PayPal Apple Pay Google Pay

Marketplace Marketplace Product

More Products From Fully Authorized Partners

Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.

Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)

For more information visit Help & Support