Call us: +86 0755-82563503

Currency: $ US Dollar

Items : %s%s

Microprocessors

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 ECCN Code Operating Supply Voltage Length RoHS Status Lead Free Contact Plating Number of Pins Additional Feature Package / Case Interface Max Supply Voltage Min Supply Voltage Frequency Width Operating Temperature Technology Height Seated (Max) HTS Code 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) Voltage Supplier Device Package Core Architecture Speed Oscillator Type Access Time Screening Level Memory Size Memory Type Ethernet USB SATA Core Processor RAM Size Number of I/O Address Bus Width Supply Current-Max Boundary Scan Low Power Mode External Data Bus Width Format Data Bus Width Number of Programmable I/O Bus Compatibility Number of Timers/Counters uPs/uCs/Peripheral ICs Type Peripherals Clock Frequency Number of Serial I/Os Bit Size Has ADC DMA Channels PWM Channels DAC Channels ROM Programmability ROM (words) RAM (bytes) CPU Family Integrated Cache Voltage - I/O Number of Cores/Bus Width Graphics Acceleration RAM Controllers Co-Processors/DSP Security Features Display & Interface Controllers Additional Interfaces Device Core SPI
ATSAMA5D28B-CU ATSAMA5D28B-CU Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray SAMA5D2 Obsolete 3 (168 Hours) 289 5A992.C 14mm ROHS3 Compliant 289-LFBGA -40°C~105°C TA CMOS 1.4mm 8542.31.00.01 BOTTOM BALL 1.2V ATSAMA5D28 YES 0.8mm S-PBGA-B289 1.1V 1.32V 500MHz 10/100Mbps (1) USB 2.0 + HSIC ARM® Cortex®-A5 26 YES YES 32 FLOATING POINT MICROPROCESSOR, RISC 50MHz YES 3.3V 1 Core 32-Bit Yes LPDDR1, LPDDR2, LPDDR3, DDR2, DDR3, DDR3L, QSPI Multimedia; NEON™ MPE ARM TZ, Boot Security, Cryptography, RTIC, Secure Fusebox, Secure JTAG, Secure Memory, Secure RTC Keyboard, LCD, Touchscreen I2C, SMC, SPI, UART, USART, QSPI
STA1079ES STA1079ES STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray Preliminary Supplier Unconfirmed 256 ARM 1 ARM Cortex R4 1
MPC8250AZQIHBC MPC8250AZQIHBC Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray MPC82xx Last Time Buy 3 (168 Hours) Non-RoHS Compliant 516-BBGA 0°C~105°C TA 516-FPBGA (27x27) 200MHz 10/100Mbps (3) PowerPC G2 3.3V 1 Core 32-Bit No DRAM, SDRAM Communications; RISC CPM I2C, SCC, SMC, SPI, UART, USART
KMPC8560PX667LC KMPC8560PX667LC NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2002 MPC85xx Obsolete 3 (168 Hours) Non-RoHS Compliant 784-BBGA, FCBGA 0°C~105°C TA MPC8560 783-FCPBGA (29x29) 667MHz 10/100/1000Mbps (2) PowerPC e500 2.5V 3.3V 1 Core 32-Bit No DDR, SDRAM Communications; CPM I2C, PCI, RapidIO, SPI, TDM, UART
P1015NSN5DFB P1015NSN5DFB NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 2002 QorIQ P1 Active 3 (168 Hours) ROHS3 Compliant 561-FBGA 0°C~125°C TA P1015 667MHz 10/100/1000Mbps (3) USB 2.0 + PHY (2) PowerPC e500v2 1 Core 32-Bit No DDR3 DUART, I2C, MMC/SD, SPI
ATSAMA5D26A-CU ATSAMA5D26A-CU Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tray 2016 SAMA5D2 yes Active 3 (168 Hours) 289 1.2V 14mm ROHS3 Compliant Lead Free Copper, Silver, Tin 289 289-LFBGA EBI/EMI, Ethernet, I2C, I2S, IrDA, LIN, MMC, SD, SDIO, SPI, UART, USART, USB 1.32V 1.1V 500MHz -40°C~85°C TA CMOS 1.4mm BOTTOM BALL 1.2V ATSAMA5D26 0.8mm ARM Internal 160kB External Program Memory, ROM 10/100Mbps (1) USB 2.0 + HSIC ARM® Cortex®-A5 128kB 128 26 YES YES FLOATING POINT 32b 6 MICROPROCESSOR, RISC DMA, LCD, POR, PWM, WDT YES 3.3V 1 Core 32-Bit Yes LPDDR1, LPDDR2, LPDDR3, DDR2, DDR3, DDR3L, QSPI Multimedia; NEON™ MPE ARM TZ, Boot Security, Cryptography, RTIC, Secure Fusebox, Secure JTAG, Secure Memory, Secure RTC Keyboard, LCD, Touchscreen I2C, SMC, SPI, UART, USART, QSPI
MPC8377ECVRAGD MPC8377ECVRAGD NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2012 MPC83xx Obsolete 3 (168 Hours) 689 5A002.A.1 31mm ROHS3 Compliant 689-BBGA Exposed Pad -40°C~125°C TA CMOS 2.46mm 8542.31.00.01 e2 TIN COPPER/TIN SILVER BOTTOM BALL 260 1V 40 MPC8377 YES 1mm S-PBGA-B689 0.95V Microprocessors 11.8/2.52.5/3.3V 1.05V 400MHz 10/100/1000Mbps (2) USB 2.0 + PHY (1) SATA 3Gbps (2) PowerPC e300c4s 32 YES YES 32 FLOATING POINT MICROPROCESSOR 66.66MHz 32 YES 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2 Security; SEC 3.0 Cryptography, Random Number Generator DUART, I2C, MMC/SD, PCI, SPI
LS1043ASE7QQB LS1043ASE7QQB NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 18 Weeks Tray 2014 QorIQ® Layerscape Active 3 (168 Hours) 621 21mm ROHS3 Compliant ALSO OPERATES AT 1V NOMINAL SUPPLY 621-FBGA, FCBGA 0°C~105°C CMOS 2.07mm BOTTOM BALL 250 0.9V 30 YES 0.8mm S-PBGA-B621 0.87V 0.93V 1.6GHz 1GbE (7) or 10GbE (1) & 1GbE (5) USB 3.0 (3) + PHY SATA 6Gbps (1) ARM® Cortex®-A53 16 YES YES 32 FIXED POINT MICROPROCESSOR, RISC 64 YES 4 Core 64-Bit DDR3L, DDR4 Secure Boot, TrustZone®
P1010NXE5HHA P1010NXE5HHA NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2002 QorIQ P1 Obsolete 3 (168 Hours) 425 ROHS3 Compliant 425-FBGA -40°C~105°C TA CMOS 8542.31.00.01 e2 Tin/Silver (Sn/Ag) 1V P1010 YES Microprocessors 1V 1.0GHz 10/100/1000Mbps (3) USB 2.0 + PHY (1) SATA 3Gbps (2) PowerPC e500v2 MICROPROCESSOR, RISC 32 1 Core 32-Bit No DDR3, DDR3L Security; SEC 4.4 Boot Security, Cryptography, Random Number Generator, Secure Fusebox CAN, DUART, I2C, MMC/SD, SPI
XPC823VR81B2T XPC823VR81B2T NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1999 MPC8xx Obsolete 3 (168 Hours) ROHS3 Compliant 256-BBGA 0°C~95°C TA PC823 256-PBGA (23x23) 81MHz 10Mbps (1) USB 1.x (1) PowerPC 3.3V 1 Core 32-Bit No DRAM Communications; RISC CPM LCD, Video I2C, SMC, SCC, SPI, UART
KMPC8560VT667LB KMPC8560VT667LB NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2002 MPC85xx Obsolete 3 (168 Hours) ROHS3 Compliant 784-BBGA, FCBGA 0°C~105°C TA MPC8560 667MHz 10/100/1000Mbps (2) PowerPC e500 2.5V 3.3V 1 Core 32-Bit No DDR, SDRAM Communications; CPM I2C, PCI, RapidIO, SPI, TDM, UART
MPC8245TVV333D MPC8245TVV333D NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 1998 MPC82xx Obsolete 3 (168 Hours) 352 3A991.A.2 35mm ROHS3 Compliant 352-LBGA -40°C~105°C TA CMOS 1.65mm 8542.31.00.01 e1 Tin/Silver/Copper (Sn/Ag/Cu) BOTTOM BALL 245 2V 30 MPC8245 YES 1.27mm S-PBGA-B352 1.9V Microprocessors 23.3V 2.1V 333MHz PowerPC 603e 32 YES YES 32 FLOATING POINT MICROPROCESSOR, RISC 66MHz 32 YES 3.3V 1 Core 32-Bit No SDRAM I2C, I2O, PCI, UART
MCIMX6X3EVN10AB MCIMX6X3EVN10AB NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 15 Weeks Tray 2002 i.MX6SX Active 3 (168 Hours) 400 5A992 17mm ROHS3 Compliant 400-LFBGA -20°C~105°C TJ CMOS 1.53mm 8542.31.00.01 e1 Tin/Silver/Copper (Sn/Ag/Cu) BOTTOM BALL YES 0.8mm S-PBGA-B400 1.35V 1.5V 227MHz, 1GHz 10/100/1000Mbps (2) USB 2.0 + PHY (1), USB 2.0 OTG + PHY (2) ARM® Cortex®-A9, ARM® Cortex®-M4 179 15 1260mA YES 32 CAN, ETHERNET, I2C, I2S, PCI, SPI, UART, USB MICROPROCESSOR, RISC 1000MHz 6 1.8V 2.5V 2.8V 3.15V 2 Core 32-Bit Yes LPDDR2, LVDDR3, DDR3 Multimedia; NEON™ MPE A-HAB, ARM TZ, CAAM, CSU, SNVS, System JTAG, TVDECODE Keypad, LCD AC'97, CAN, I2C, I2S, MMC/SD/SDIO, PCIe, SAI, SPDIF, SPI, SSI, UART
P2020NXN2KHC P2020NXN2KHC NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 2002 QorIQ P2 Active 3 (168 Hours) 689 3A991.A.2 31mm ROHS3 Compliant 689-BBGA Exposed Pad -40°C~125°C TA CMOS 2.46mm 8542.31.00.01 e2 TIN COPPER/TIN SILVER BOTTOM BALL 260 1.05V 40 P2010 YES 1mm S-PBGA-B689 1V Microprocessors 1.05V 1.1V 1.2GHz 10/100/1000Mbps (3) USB 2.0 + PHY (2) PowerPC e500v2 32 YES YES 16 FLOATING POINT MICROPROCESSOR, RISC 100MHz 32 YES 2 Core 32-Bit No DDR2, DDR3 DUART, I2C, MMC/SD, SPI
MCIMX7D5EVK10SD MCIMX7D5EVK10SD NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 16 Weeks i.MX7D Active 3 (168 Hours) ROHS3 Compliant 488-TFBGA -20°C~105°C TJ 1GHz 10/100/1000Mbps (2) USB 2.0 + PHY (1), USB 2.0 OTG + PHY (2) ARM® Cortex®-A7, ARM® Cortex®-M4 1.8V 3.3V 2 Core 32-Bit No DDR3, DDR3L, LPDDR2, LPDDR3 Multimedia; NEON™ MPE A-HAB, ARM TZ, CAAM, CSU, SJC, SNVS Keypad, LCD, MIPI AC'97, CAN, eCSPI, I2C, I2S, MMC/SD/SDIO, PCIe, QSPI, SAI, UART
MPC8272VRTMFA MPC8272VRTMFA NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 1994 MPC82xx Active 3 (168 Hours) 516 5A002.A.1 ROHS3 Compliant 516-BBGA 0°C~105°C TA CMOS 8542.31.00.01 e2 TIN COPPER/TIN SILVER BOTTOM BALL 245 1.5V 30 MPC8272 YES 1mm S-PBGA-B516 1.425V Other uPs/uCs/Peripheral ICs 1.53.3V 1.575V 400MHz 10/100Mbps (2) USB 2.0 (1) PowerPC G2_LE 57 30 64 MICROCONTROLLER, RISC 66.7MHz 32 NO YES NO 3.3V 1 Core 32-Bit No DRAM, SDRAM Communications; RISC CPM, Security; SEC Cryptography, Random Number Generator I2C, SCC, SMC, SPI, UART, USART
MC68302PV33C MC68302PV33C NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1996 M683xx Obsolete 3 (168 Hours) Non-RoHS Compliant 144-LQFP 0°C~70°C TA MC68302 33MHz M68000 5.0V 1 Core 8/16-Bit No DRAM Communications; RISC CPM GCI, IDL, ISDN, NMSI, PCM, SCPI
MPC8544EVJAQGA MPC8544EVJAQGA NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 18 Weeks Tray 2002 MPC85xx Active 3 (168 Hours) 783 5A002.A.1 29mm ROHS3 Compliant 783-BBGA, FCBGA 0°C~105°C TA CMOS 2.8mm 8542.31.00.01 e2 TIN COPPER/TIN SILVER BOTTOM BALL 260 1V 40 MPC8544 YES 1mm S-PBGA-B783 0.95V 1.05V 1.0GHz 10/100/1000Mbps (2) PowerPC e500 32 YES YES 32 FLOATING POINT MICROPROCESSOR, RISC 133MHz 32 YES 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2, SDRAM Signal Processing; SPE, Security; SEC Cryptography, Random Number Generator DUART, I2C, PCI
MPC866PCZP100A MPC866PCZP100A NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tray 1999 MPC8xx Obsolete 3 (168 Hours) 357 3A991.A.2 25mm Non-RoHS Compliant 357-BBGA -40°C~100°C TA CMOS 2.52mm 8542.31.00.01 e0 Tin/Lead/Silver (Sn/Pb/Ag) BOTTOM BALL 220 1.8V 30 MPC866 YES 1.27mm S-PBGA-B357 1.7V Microprocessors 1.83.3V 1.9V 100MHz 10Mbps (4), 10/100Mbps (1) 32 YES YES 32 FIXED POINT MICROPROCESSOR, RISC 32 YES 3.3V 1 Core 32-Bit No DRAM Communications; CPM HDLC/SDLC, I2C, IrDA, PCMCIA, SPI, TDM, UART/USART
MC68360CEM25L MC68360CEM25L NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 1995 M683xx Obsolete 3 (168 Hours) Non-RoHS Compliant 240-BFQFP -40°C~85°C TA MC68360 25MHz 10Mbps (1) CPU32+ 5.0V 1 Core 32-Bit No DRAM Communications; CPM SCC, SMC, SPI
KMPC8360EZUAJDGA KMPC8360EZUAJDGA NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2006 MPC83xx Obsolete 1 (Unlimited) ROHS3 Compliant 740-LBGA 0°C~105°C TA MPC8360 740-TBGA (37.5x37.5) 533MHz 10/100/1000Mbps (1) USB 1.x (1) PowerPC e300 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2 Communications; QUICC Engine, Security; SEC Cryptography, Random Number Generator DUART, HDLC, I2C, PCI, SPI, UART
MPC8313ZQADDB MPC8313ZQADDB NXP Semiconductors 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray 2008 MPC83xx Obsolete 3 (168 Hours) Non-RoHS Compliant 516-BBGA Exposed Pad 0°C~105°C TA MPC8313 516-TEPBGA (27x27) 267MHz 10/100/1000Mbps (2) USB 2.0 + PHY (1) PowerPC e300c3 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2 DUART, HSSI, I2C, PCI, SPI
KMPC8543VUANG KMPC8543VUANG NXP USA Inc. 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 Tray MPC85xx Obsolete 1 (Unlimited) Non-RoHS Compliant 783-BBGA, FCBGA 0°C~105°C TA MPC8543 800MHz 10/100/1000Mbps (4) PowerPC e500 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2, SDRAM Signal Processing; SPE DUART, I2C, PCI, RapidIO
C8051F586-AQ C8051F586-AQ Silicon Labs 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 32 3A001.A.3 7mm Non-RoHS Compliant 32 LQFP 7mm CMOS 1.6mm 8542.31.00.01 QUAD GULL WING NOT SPECIFIED 2.1V NOT SPECIFIED 32 AUTOMOTIVE YES 0.8mm 2V 125°C -40°C Microcontrollers Not Qualified 2/5V 2.75V 50 MHz AEC-Q100 25 33mA MICROCONTROLLER 50MHz 8 YES NO YES NO FLASH 98304 8448 8051
ATSAMA5D41B-CUR ATSAMA5D41B-CUR Microchip Technology 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 12 Weeks Tape & Reel (TR) 2015 SAMA5D4 Active 3 (168 Hours) 289 14mm ROHS3 Compliant 289-LFBGA -40°C~85°C TA CMOS 1.4mm 8542.31.00.01 BOTTOM BALL 1.26V ATSAMA5D41 YES 0.8mm S-PBGA-B289 1.16V 1.32V 600MHz TS 16949 10/100Mbps (1) USB 2.0 (3) ARM® Cortex®-A5 26 YES YES 16 FLOATING POINT MICROPROCESSOR, RISC 32 YES 1.2V 1.8V 3.3V 1 Core 32-Bit Yes LPDDR, LPDDR2, DDR2 Multimedia; NEON™ SIMD AES, SHA, TDES, TRNG LCD, Touchscreen EBI, I2C, MMC/SD/SDIO, SPI, SSC, UART, USART
MPC8321ZQAFDC MPC8321ZQAFDC Rochester Electronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Tray MPC83xx Obsolete 3 (168 Hours) Non-RoHS Compliant 516-BBGA 0°C~105°C TA 516-FPBGA (27x27) 333MHz 10/100Mbps (3) USB 2.0 (1) PowerPC e300c2 1.8V 2.5V 3.3V 1 Core 32-Bit No DDR, DDR2 Communications; QUICC Engine DUART, I2C, PCI, SPI, TDM, UART
Z16C0210VEC Z16C0210VEC Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download Surface Mount Tube 1999 SCC Obsolete 3 (168 Hours) 44 16.5862mm Non-RoHS Compliant Contains Lead 44-LCC (J-Lead) 10MHz -40°C~100°C TA CMOS 4.57mm e0 Tin/Lead (Sn/Pb) QUAD J BEND 225 5V 30 Z16C02 44 1.27mm Microprocessors 5V 5V 10 μs 64kB Z16C00 64kB 16 35mA NO YES FIXED POINT 8b 44 MICROPROCESSOR, RISC 16 NO 5.0V 1 Core 16-Bit No
STM32MP151DAA1 STM32MP151DAA1 STMicroelectronics 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download STM32MP1 Active 3 (168 Hours) 448-LFBGA -20°C~105°C TJ 209MHz, 800MHz 10/100Mbps (1) USB 2.0 (2), USB 2.0 OTG+ PHY (3) ARM® Cortex®-A7 2.5V 3.3V 1 Core 32-Bit Yes DDR3, DDR3L, LPDDR2, LPDDR3 ARM® Cortex®-M4 ARM TZ HDMI, LCD CAN, Ethernet, I2C, MMC/SD/SDIO, SPDIF, SPI, UART, USB
Z8018216FSC Z8018216FSC Zilog 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 download 13 Weeks Surface Mount Tray 1997 ZIP™ no Obsolete 3 (168 Hours) 100 5.5V Non-RoHS Compliant Contains Lead 100 100-QFP UART 16MHz 0°C~70°C TA CMOS 3.1mm e0 Tin/Lead (Sn/Pb) QUAD GULL WING 225 5V 30 Z80182 100 0.65mm Microcontrollers 5V 5V 16 μs Z80180 24 8b 2 MICROCONTROLLER 8 Z80 5.0V 1 Core 8-Bit No DRAM ASCI, CSIO, SCC, UART
FD6100WMW6KGU FD6100WMW6KGU AMD 0.0000
RFQ

Min: 1

Mult: 1

0.00000000 RoHS Compliant
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