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 Lifecycle Status 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 Max Supply Voltage REACH SVHC Reach Compliance Code Min Supply Voltage Density Frequency Height Width Thickness Mounting Type Operating Temperature Technology Height Seated (Max) HTS Code Max Frequency 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) Subcategory Qualification Status Power Supplies Supply Voltage-Max (Vsup) Max Power Dissipation Halogen Free Watchdog Timer Supplier Device Package Core Architecture Speed Oscillator Type Access Time Frequency (Max) Memory Size Memory Type Ethernet USB Core Processor Number of SPI Channels RAM Size Number of Bits Number of I/O Address Bus Width Number of UART Channels Supply Current-Max Special Feature Number of A/D Converters Boundary Scan Low Power Mode External Data Bus Width Format Barrel Shifter Data Bus Width Number of Programmable I/O Number of I2C Channels 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 Number of DMA Channels DAC Channels ROM Programmability Voltage - Supply (Vcc/Vdd) ROM (words) RAM (bytes) Number of ADC Channels On Chip Program ROM Width CPU Family Integrated Cache Internal Bus Architecture EEPROM Size Program Memory Type Connectivity Core Size Program Memory Size Data Converter Device Core SPI PWM
R5F564MJDDLJ#21 R5F564MJDDLJ#21 Renesas Electronics America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 20 Weeks Tray 2014 RX600 yes Active 3 (168 Hours) 100 ROHS3 Compliant 100 100-TFLGA CAN, EBI/EMI, Ethernet, I2C, LIN, MMC, SCI, SD, SPI, UART, USART, USB 120MHz Surface Mount -40°C~85°C TA CMOS BOTTOM BUTT 100 YES 0.635mm Microcontrollers Not Qualified 3/3.3V Internal 3MB RXv2 552K x 8 78 110mA DMA, LVD, POR, PWM, WDT 32 2.7V~3.6V 3145728 524288 RX 64K x 8 FLASH CANbus, EBI/EMI, Ethernet, I2C, LINbus, MMC/SD, SCI, SPI, SSI, UART/USART, USB 32-Bit 3MB 3M x 8 A/D 22x12b; D/A 1x12b
MB89697BPFM-G-113-BNDE1 MB89697BPFM-G-113-BNDE1 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 3 (168 Hours) ROHS3 Compliant
Z8F1601VN020SC Z8F1601VN020SC Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2004 Encore!® Obsolete 3 (168 Hours) 44 16.585mm Non-RoHS Compliant Contains Lead 44 44-LCC (J-Lead) I2C, IrDA, SPI, UART, USART unknown 20MHz Surface Mount 0°C~70°C TA CMOS 4.57mm e0 Tin/Lead (Sn/Pb) QUAD J BEND 225 3.3V 30 Z8F1601 44 YES 1.27mm 3V Microcontrollers Not Qualified 3.3V 3.6V Z8 Internal 16kB eZ8 2K x 8 31 8b 48 MICROCONTROLLER Brown-out Detect/Reset, DMA, POR, PWM, WDT 8 YES YES YES NO 3V~3.6V 16384 Z8 FLASH I2C, IrDA, SPI, UART/USART 8-Bit 16KB 16K x 8 A/D 8x10b
XU210-256-TQ128-I20 XU210-256-TQ128-I20 XMOS 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 2015 XU Active 3 (168 Hours) 85°C -40°C ROHS3 Compliant 128-TQFP Exposed Pad USB Surface Mount -40°C~85°C TA 128-TQFP (14x14) XCore 2000MIPS External ROMless XCore 256K x 8 81 0.95V~3.6V ROMless USB 32-Bit 10-Core
LPC4076FBD144 LPC4076FBD144 NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray Active RoHS Compliant 144 ARM 1 1 80KB 165 CAN Controller 1 Flash 256KB ARM Cortex M4 4 2
ZLP32300H4808G ZLP32300H4808G Zilog / Littelfuse 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 2001 48 70°C 0°C 15.875mm RoHS Compliant Lead Free No 48 SSOP 3.6V 2V CMOS e3 MATTE TIN DUAL GULL WING 260 3V 40 48 COMMERCIAL YES 0.635mm Microcontrollers Z8 8 μs 8MHz 8kB EPROM, OTP 237B 32 10mA 8b 32 2 MICROCONTROLLER 8 NO NO NO NO OTPROM 256 Z8
CY8C4025FNI-S412T CY8C4025FNI-S412T Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 13 Weeks Tape & Reel (TR) PSOC® 4 CY8C4000S Active 1 (Unlimited) ROHS3 Compliant 25-XFBGA, WLCSP Surface Mount -40°C~85°C TA NOT SPECIFIED NOT SPECIFIED 24MHz Internal ARM® Cortex®-M0+ 4K x 8 21 Brown-out Detect/Reset, CapSense, LCD, LVD, POR, PWM, WDT 1.71V~5.5V FLASH I2C, IrDA, LINbus, Microwire, SmartCard, SPI, SSP, UART/USART 32-Bit 32KB 32K x 8 A/D 1x10b
CY8C6117BZI-F34 CY8C6117BZI-F34 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 13 Weeks Tray PSoC® 6 Active 3 (168 Hours) ROHS3 Compliant 124-VFBGA Surface Mount -40°C~85°C TA 50MHz Internal ARM® Cortex®-M4 288K x 8 104 Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT 1.7V~3.6V 32K x 8 FLASH I2C, LINbus, QSPI, SPI, UART/USART, USB 32-Bit 1MB 1M x 8 A/D 8x12b SAR; D/A 1x12b
EFM8LB12F32E-A-QFN24R EFM8LB12F32E-A-QFN24R Silicon Labs 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) 2009 Laser Bee Discontinued 3 (168 Hours) Non-RoHS Compliant 24-VFQFN Exposed Pad Surface Mount -40°C~105°C TA 72MHz Internal CIP-51 8051 2.25K x 8 20 Brown-out Detect/Reset, POR, PWM, WDT 2.2V~3.6V FLASH I2C, SMBus, SPI, UART/USART 8-Bit 32KB 32K x 8 A/D 12x14b; D/A 4x12b
MIMXRT1011DAE5A MIMXRT1011DAE5A NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 14 Weeks Tray RT1010 Active 3 (168 Hours) 80-LQFP Surface Mount 0°C~95°C TJ 500MHz Internal/External ARM® Cortex®-M7 128K x 8 44 MICROPROCESSOR, RISC Brown-out Detect/Reset, DMA, POR, PWM, WDT 3V~3.6V External Program Memory EBI/EMI, I2C, SAI, SPDIF, SPI, UART/USART, USB2.0 OTG 32-Bit A/D 15x12b
STM32F103VDH6TR STM32F103VDH6TR STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 10 Weeks ACTIVE (Last Updated: 7 months ago) Tape & Reel (TR) STM32F1 Active 3 (168 Hours) 100 3A991.A.2 10mm ROHS3 Compliant Lead Free No 100 100-LFBGA CAN, I2C, IrDA, LIN, SPI, UART, USART, USB 72MHz Surface Mount -40°C~85°C TA CMOS 1.7mm e1 Tin/Silver/Copper (Sn/Ag/Cu) BOTTOM BALL 3.3V STM32F103 100 YES 2V 3.6V 500mW Yes ARM Internal 384kB ARM® Cortex®-M3 64K x 8 80 24 69mA YES YES FIXED POINT 32b 8 MICROCONTROLLER, RISC DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT 16 32 YES YES YES 12 YES 2V~3.6V 393216 8 CORTEX-M3 NO FLASH CANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB 32-Bit 384KB 384K x 8 A/D 16x12b; D/A 2x12b
MCF52211CVM66J MCF52211CVM66J NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray MCF5221x Obsolete 3 (168 Hours) ROHS3 Compliant 81-LBGA Surface Mount -40°C~85°C TA MCF52211 66MHz Internal Coldfire V2 16K x 8 55 DMA, LVD, POR, PWM, WDT 3V~3.6V FLASH I2C, SPI, UART/USART, USB OTG 32-Bit 128KB 128K x 8 A/D 8x12b
MC56F8323MFBE MC56F8323MFBE NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1998 56F8xxx Not For New Designs 3 (168 Hours) 64 3A991.A.2 10mm ROHS3 Compliant ALSO REQUIRES 3.3V SUPPLY 64-LQFP 10mm Surface Mount -40°C~125°C TA CMOS 1.6mm 8542.31.00.01 e3 Matte Tin (Sn) QUAD GULL WING 260 2.5V 40 MC56F8323 YES 0.5mm S-PQFP-G64 2.25V Not Qualified 2.75V 60MHz Internal 56800E 12K x 8 27 YES YES FIXED POINT YES DIGITAL SIGNAL PROCESSOR, OTHER POR, PWM, Temp Sensor, WDT 120MHz 2.25V~3.6V MULTIPLE FLASH CANbus, SCI, SPI 16-Bit 32KB 16K x 16 A/D 8x12b
MSP430F5338IPZR MSP430F5338IPZR Texas Instruments 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 6 Weeks ACTIVE (Last Updated: 5 days ago) Digi-Reel® MSP430F5xx yes Active 3 (168 Hours) 100 EAR99 3.6V 14mm ROHS3 Compliant Lead Free No 100 ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 8 MHZ 100-LQFP I2C, IrDA, LIN, SCI, SPI, UART, USART 20MHz 1.6mm 14mm 1.4mm Surface Mount -40°C~85°C TA CMOS e4 Nickel/Palladium/Gold (Ni/Pd/Au) QUAD GULL WING 260 3V MSP430 100 YES 0.5mm Microcontrollers Yes Internal 256kB CPUXV2 18K x 8 74 2 16 YES YES FIXED-POINT 16b 74 4 MICROCONTROLLER, RISC Brown-out Detect/Reset, DMA, POR, PWM, WDT 18 1 16 YES YES YES YES 1.8V~3.6V NO FLASH I2C, IrDA, LINbus, SCI, SPI, UART/USART 16-Bit 256KB 256K x 8 A/D 16x12b; D/A 2x12b
MB96F386RSCPMC-GS-189E2 MB96F386RSCPMC-GS-189E2 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 3 (168 Hours) ROHS3 Compliant
Z8F0213HH005EC Z8F0213HH005EC Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tube 2004 Encore!® XP® no Obsolete 1 (Unlimited) 20 Non-RoHS Compliant Contains Lead 20 20-SSOP (0.209, 5.30mm Width) IrDA, UART, USART unknown 5MHz Surface Mount -40°C~105°C TA CMOS 1.98mm e0 Tin/Lead (Sn/Pb) DUAL GULL WING 225 3V 30 Z8F0213 20 YES 0.65mm Microcontrollers Not Qualified 3/3.3V 3.6V Z8 Internal 5 μs 2kB eZ8 512 x 8 16 8b 2 MICROCONTROLLER Brown-out Detect/Reset, LED, POR, PWM, WDT 8 NO NO YES NO 2.7V~3.6V Z8 FLASH IrDA, UART/USART 8-Bit 2KB 2K x 8
D36780ZGU100 D36780ZGU100 Texas Instruments 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 3 (168 Hours) ROHS3 Compliant D36780
Z51F3230FNX Z51F3230FNX Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Obsolete 3 (168 Hours) ROHS3 Compliant
MC9S08QG84CDNER MC9S08QG84CDNER Freescale Semiconductor, Inc. (NXP Semiconductors) 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Tape & Reel yes 85°C -40°C RoHS Compliant No SOIC I2C, SCI, SPI 3.6V 1.8V 20MHz Halogen Free Yes S08 Internal 20MHz 8kB FLASH 512B 4 8b 12 1 LVD, POR, PWM, WDT
NUC123LC2AE1 NUC123LC2AE1 Nuvoton Technology Corporation of America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 10 Weeks NuMicro™ NUC123 Active 3 (168 Hours) RoHS Compliant 48-LQFP compliant Surface Mount -40°C~105°C TA NOT SPECIFIED NOT SPECIFIED 72MHz Internal ARM® Cortex®-M0 12K x 8 36 MICROCONTROLLER, RISC Brown-out Detect/Reset, DMA, I2S, LVD, POR, PS2, PWM, WDT 2.5V~5.5V FLASH I2C, IrDA, SPI, UART/USART, USB 32-Bit 36KB 36K x 8 A/D 8x10b
ZLP32300H2808G ZLP32300H2808G Zilog / Littelfuse 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 2001 28 70°C 0°C RoHS Compliant Lead Free No 28 SSOP 3.6V 2V CMOS 1.99mm e3 MATTE TIN DUAL GULL WING 260 3V 40 28 COMMERCIAL YES 0.65mm Microcontrollers Z8 8 μs 8MHz 8kB EPROM, OTP 237B 24 10mA 8b 24 2 MICROCONTROLLER 8 NO NO NO NO OTPROM 256 Z8
CY95F562KNPFT-G102UNERE2 CY95F562KNPFT-G102UNERE2 Cypress Semiconductor Corp 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 19 Weeks Tape & Reel (TR) F2MC-8FX MB95560H Active 3 (168 Hours) 20 6.5mm ROHS3 Compliant 20-TSSOP (0.173, 4.40mm Width) 4.4mm Surface Mount -40°C~85°C TA CMOS 1.2mm e3 Tin (Sn) DUAL GULL WING NOT SPECIFIED 5V NOT SPECIFIED YES 0.65mm R-PDSO-G20 2.4V 5.5V 16MHz External F2MC-8FX 240 x 8 17 MICROCONTROLLER LVD, POR, PWM, WDT 32.5MHz 8 YES NO YES NO 2.4V~5.5V 8 FLASH LINbus-UART 8-Bit 8KB 8K x 8 A/D 6x8/10b
MC711K4CFUE3 MC711K4CFUE3 NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray HC11 Obsolete 3 (168 Hours) ROHS3 Compliant 80-QFP Surface Mount -40°C~85°C TA MC711K4 80-QFP (14x14) 3MHz Internal HC11 768 x 8 62 POR, PWM, WDT 4.5V~5.5V 640 x 8 OTP SCI, SPI 8-Bit 24KB 24K x 8 A/D 8x8b
FT905Q-C-T FT905Q-C-T Bridgetek Pte Ltd. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 13 Weeks Tray FT90x Active 3 (168 Hours) 76 9mm RoHS Compliant ALSO HAVING 256KB ON-CHIP SHADOW PROGRAM MEMORY 76-VFQFN Exposed Pad compliant 9mm Surface Mount -40°C~85°C TA CMOS 1mm QUAD NO LEAD 260 3.3V 40 YES 0.4mm S-XQCC-N76 100MHz Internal FT32 320K x 8 42 MICROCONTROLLER, RISC POR, PWM, WDT 32 YES NO YES YES 2.97V~3.63V 262144 65536 8 FLASH CANbus, Ethernet, I2C, SPI, UART/USART, USB 32-Bit 256KB 256K x 8 A/D 4x10b; D/A 2x10b
Z8F0431HH020EG Z8F0431HH020EG Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 13 Weeks Tube Encore!® Active 3 (168 Hours) 20 ROHS3 Compliant Lead Free 20 20-SSOP (0.209, 5.30mm Width) 20MHz Surface Mount -40°C~105°C TA CMOS 1.98mm e3 Tin (Sn) DUAL GULL WING 3.3V Z8F0431 20 YES 0.65mm Microcontrollers Not Qualified 3/3.3V 3.6V Internal 20 μs 4kB eZ8 256 x 8 17 8b 2 MICROCONTROLLER Brown-out Detect/Reset, LED, POR, PWM, WDT 8 NO NO YES NO 2.7V~3.6V 4096 Z8 FLASH 8-Bit 4KB 4K x 8
ZLP12840H2064G ZLP12840H2064G Zilog / Littelfuse 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 2004 20 70°C 0°C RoHS Compliant Lead Free No 20 SSOP UART CMOS 1.98mm e3 Matte Tin (Sn) DUAL GULL WING 260 2.5V 40 20 COMMERCIAL YES 0.65mm 2V 3.6V Yes Z8 8 μs 8MHz 64kB EPROM 1004B 16 8b 24 2 MICROCONTROLLER 8 NO NO NO NO OTPROM
XC2269I136F128LAAKXUMA1 XC2269I136F128LAAKXUMA1 Infineon Technologies 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tape & Reel (TR) XC22xxI Obsolete 3 (168 Hours) RoHS Compliant Lead Free 100 LQFP CAN, I2C, I2S, LIN, SPI, UART -40°C~125°C TA CMOS 128MHz NOT SPECIFIED NOT SPECIFIED Halogen Free Yes Internal 1.1MB C166SV2 90K x 8 76 5 MICROCONTROLLER DMA, I2S, POR, PWM, WDT 3V~5.5V FLASH CANbus, EBI/EMI, I2C, LINbus, SPI, SSC, UART/USART, USI 16/32-Bit 1MB 1M x 8 A/D 16x12b
R5F5630BDDLK#U0 R5F5630BDDLK#U0 Renesas Electronics America 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 20 Weeks Tray 2014 RX600 yes Active 3 (168 Hours) 145 7mm ROHS3 Compliant 145 145-TFLGA CAN, EBI/EMI, I2C, LIN, SCI, SPI, USB 100MHz 7mm Surface Mount -40°C~85°C TA CMOS 1.05mm 8542.31.00.01 BOTTOM BALL NOT SPECIFIED 3.3V NOT SPECIFIED 145 YES 0.5mm 2.7V Microcontrollers Not Qualified 3/3.3V 3.6V Internal 1MB RX 96K x 8 117 24 100mA 16 MICROCONTROLLER DMA, LVD, POR, PWM, WDT 32 YES YES YES YES 2.7V~3.6V 1048576 98304 RX 32K x 8 FLASH CANbus, EBI/EMI, I2C, LINbus, SCI, SPI, USB 32-Bit 1MB 1M x 8 A/D 8x10b, 21x12b; D/A 2x10b
EZ80L92AZ050SG EZ80L92AZ050SG Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 13 Weeks Tray 2003 eZ80® Acclaim!® yes Active 3 (168 Hours) 100 14mm ROHS3 Compliant Lead Free No 100 100-LQFP EBI/EMI, I2C, IrDA, SPI, UART, USART 50MHz Surface Mount 0°C~70°C TA CMOS 8542.31.00.01 e3 Matte Tin (Sn) QUAD GULL WING 260 3.3V 40 EZ80L92 100 YES 0.5mm 3V Microprocessors 3.3V 520mW Yes Internal 64kB External Program Memory, ROMless eZ80 24 24 145mA 8b 6 MICROCONTROLLER DMA, WDT 8 NO NO NO NO FLASH 3V~3.6V ROMless EBI/EMI, I2C, IrDA, SPI, UART/USART 8-Bit
STM32F103RCT6 STM32F103RCT6 STMicroelectronics 1.2856
Add to Cart

Min: 1

Mult: 1

0.00000000 download 10 Weeks ACTIVE (Last Updated: 7 months ago) Tray STM32F1 Active 3 (168 Hours) 64 SMD/SMT 10mm ROHS3 Compliant Lead Free No 64 64-LQFP CAN, I2C, I2S, IrDA, LIN, SDIO, SPI, UART, USART, USB No SVHC 2 Mb 72MHz 1.45mm 10.2mm Surface Mount -40°C~85°C TA CMOS e4 Nickel/Palladium/Gold (Ni/Pd/Au) QUAD GULL WING 3.3V STM32F103 64 YES 0.5mm 2V Microcontrollers 444mW Yes ARM Internal 256kB ARM® Cortex®-M3 3 48K x 8 32 51 70mA 32b 2 8 MICROCONTROLLER, RISC DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT 32 YES YES YES 2V~3.6V 16 FLASH CANbus, I2C, IrDA, LINbus, SPI, UART/USART, USB 32-Bit 256KB 256K x 8 A/D 16x12b; D/A 2x12b
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