Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    MCP6549 Search Results

    SF Impression Pixel

    MCP6549 Price and Stock

    Microchip Technology Inc MCP6549T-E-ST

    IC COMPARATOR 4 GEN PUR 14TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MCP6549T-E-ST Digi-Reel 10,789 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.31
    • 1000 $1.31
    • 10000 $1.31
    		Buy Now
    MCP6549T-E-ST Cut Tape 10,789 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.31
    • 1000 $1.31
    • 10000 $1.31
    		Buy Now
    MCP6549T-E-ST Reel 7,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $0.99001
    		Buy Now

    Microchip Technology Inc MCP6549-I-ST

    IC COMPARATOR 4 GEN PUR 14TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MCP6549-I-ST Tube 5,101 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.31
    • 1000 $1.31
    • 10000 $1.31
    		Buy Now

    Microchip Technology Inc MCP6549-E-SL

    IC COMPARATOR 4 GEN PUR 14SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MCP6549-E-SL Tube 397 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.31
    • 1000 $1.31
    • 10000 $1.31
    		Buy Now

    Microchip Technology Inc MCP6549-I-SL

    IC COMPARATOR 4 GEN PUR 14SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MCP6549-I-SL Tube 375 1
    • 1 $1.31
    • 10 $1.31
    • 100 $1.31
    • 1000 $1.31
    • 10000 $1.31
    		Buy Now

    Microchip Technology Inc MCP6549-I-P

    IC COMPARATOR 4 GEN PUR 14DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MCP6549-I-P Tube 355 1
    • 1 $1.43
    • 10 $1.43
    • 100 $1.43
    • 1000 $1.43
    • 10000 $1.43
    		Buy Now
    Find more MCP6549 price and stock on Findchips.com

    MCP6549 Datasheets (41)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    MCP6549 Microchip Technology Original PDF
    MCP6549-E/P Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP 1.6V QUAD O-D 14DIP Original PDF
    MCP6549-E/P Microchip Technology QUAD 1.6V OPEN DRAIN COMPARATOR, -40C to +125C, 14-PDIP, TUBE Original PDF
    MCP6549-E/SL Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP 1.6V QUAD O-D 14SOIC Original PDF
    MCP6549-E/SL Microchip Technology QUAD 1.6V OPEN DRAIN COMPARATOR, -40C to +125C, 14-SOIC 150mil, TUBE Original PDF
    MCP6549-E/ST Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP 1.6V QUAD O-D 14TSSOP Original PDF
    MCP6549-E/ST Microchip Technology QUAD 1.6V OPEN DRAIN COMPARATOR, -40C to +125C, 14-TSSOP, TUBE Original PDF
    MCP6549-ILT Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-IMS Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-IOT Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-I/P Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP OPENDRN 1.6V QUAD 14-DIP Original PDF
    MCP6549-I/P Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-I/P Microchip Technology Quad 1.6V Open Drain Comparator, I temp, -40C to +85C, 14-PDIP, TUBE Original PDF
    MCP6549-I/P Microchip Technology Comparator, Quad channel, Open drain/collector, 5.5V, DIP, 14-pin Original PDF
    MCP6549-I/SL Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP OPENDRN 1.6V QUAD 14SOIC Original PDF
    MCP6549-I/SL Microchip Technology Quad 1.6V Open Drain Comparator, I temp, -40C to +85C, 14-SOIC 150mil, TUBE Original PDF
    MCP6549-I/SL Microchip Technology Comparator, Quad channel, Open drain/collector, 5.5V, SOIC, 14-pin Original PDF
    MCP6549-I/SL Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-ISN Microchip Technology Open-Drain Output Sub-Microamp Comparators Original PDF
    MCP6549-I/ST Microchip Technology Linear - Comparators, Integrated Circuits (ICs), IC COMP OPENDRN 1.6V QUAD14TSSOP Original PDF

    MCP6549 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    51597A

    Abstract: DIP14 footprint MCP2120 MCP42010 MCP42050 SOIC-14 MOSFET R3D SOT23 R2P MARK R2C SOT-23 r2e sot 23
    Text: 14-Pin SOIC/DIP/TSSOP Evaluation Board User’s Guide 2006 Microchip Technology Inc. DS51597A Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet.


    Original     		PDF 14-Pin DS51597A DS51597A-page 51597A DIP14 footprint MCP2120 MCP42010 MCP42050 SOIC-14 MOSFET R3D SOT23 R2P MARK R2C SOT-23 r2e sot 23

    MCP6546

    Abstract: MCP6546R MCP6546U MCP6547 MCP6548 MCP6549
    Text: MCP6546/6R/6U/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • • • • • • • • • • • The Microchip Technology Inc. MCP6546/6R/6U/7/8/9 family of comparators is offered in single MCP6546, MCP6546R, MCP6546U , single with chip select (CS)


    Original     		PDF MCP6546/6R/6U/7/8/9 MCP6546, MCP6546R, MCP6546U) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5 MCP6546 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549

    MCP6131

    Abstract: MCP6133 MCP6132 65mV
    Text: Op Amps and Comparators Microchip offers several families of Operational Amplifiers Op Amps , Comparators and Integrated Op Amp/Comparators. The Op Amp families offer devices that operate with IQ as low as 1µA and GBWP for other devices up to 10MHz. These families offer some of the lowest IQ for a


    Original     		PDF 10MHz. OT-23 DS21691A DS21691A* MCP6131 MCP6133 MCP6132 65mV

    MCP6546

    Abstract: MCP6547 MCP6548 MCP6549 MCP654X a25 sot23-5 e07 mARking sot23-5 marking KK sot235
    Text: M MCP6546/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • • • • • • • • • • The Microchip Technology, Inc. MCP6546/7/8/9 family of comparators is offered in single MCP6546 , single with chip select (MCP6548), dual (MCP6547) and quad


    Original     		PDF MCP6546/7/8/9 MCP6546/7/8/9 MCP6546) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5 MCP6548 D-85737 MCP6546 MCP6547 MCP6548 MCP6549 MCP654X a25 sot23-5 e07 mARking sot23-5 marking KK sot235

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original     		PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    MCP3424E

    Abstract: MCP32XX mcp30xx sn 357 SIGMA as 226 MCP3202-CIP MCP33XX mcp3424-e MCP3426A0-E
    Text: 1985-2012:QuarkCatalogTempNew 9/20/12 3:01 PM Page 1985 25 Analog Semiconductors RoHS Microchip’s SAR Successive Approximation Register ADC offering provides a broad selection for low power applications. Based on advanced CMOS architecture and innovative design, these devices operate with an active conversion current as low as 175 µA. The MCP30XX, MCP32XX, and MCP33XX families offer resolutions of


    Original     		PDF MCP30XX, MCP32XX, MCP33XX 10-to 13-bits, MCP3001-I/P MCP3001-I/SN MCP3008-I/SL MCP35 OT-23-5 MCP3424E MCP32XX mcp30xx sn 357 SIGMA as 226 MCP3202-CIP mcp3424-e MCP3426A0-E

    FSQ510 Equivalent

    Abstract: BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2
    Text: SEMICONDUCTORS MCU/MPU/DSP Atmel. . . . . . . . . 167, 168, 169, 170, 171, 172 Blackhawk. . . . . . . . . . . . . . . . . . . . . . . . . 173 Cyan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174 Cypress. . . . . . . . . . . . . . . 175, 176, 177, 178


    Original     		PDF GP-20) FSQ510 Equivalent BTA12 6008 bta16 6008 ZIGBEE interface with AVR ATmega16 Precision triac control thermostat thyristor t 558 f eupec gw 5819 diode transistor a564 A564 transistor BSM25GP120 b2

    PIC16f690 example codes

    Abstract: PIC18f4520 enc28j60 spi example codes PIC18f4431 PWM example codes PIC16f877a example code spi master configuration PIC16f876 example codes PIC18f4520 PWM example codes RF transmitter 433.92 3 pin 12v PIC16f877a example uart codes PIC16F84 example codes picdem 2 plus demo board pic18f4520 examples
    Text: 1st Half 2005 January - March 2005 Product Selector Guide Product Profile PICmicro Microcontrollers Microchip’s PICmicro® family of microcontrollers combine high performance, low cost and small package size to offer the best price/ performance ratio in the industry. Based on a powerful RISC core, the PICmicro architecture provides users an easy migration path


    Original     		PDF DS00148K1 PIC16f690 example codes PIC18f4520 enc28j60 spi example codes PIC18f4431 PWM example codes PIC16f877a example code spi master configuration PIC16f876 example codes PIC18f4520 PWM example codes RF transmitter 433.92 3 pin 12v PIC16f877a example uart codes PIC16F84 example codes picdem 2 plus demo board pic18f4520 examples

    MCP60421

    Abstract: mcp61421 PIC16F877 stepper motor interfacing PIC16F874A SD card Thermistor 20SP switch reluctance motor control using pic18F46K20 ENC28J60 mplab icd 3 mclr pgd pgc pic16f722 TC1426 rf transmitter and receiver for pic16f887
    Text: July - September 2006 2006 Product Selector Guide Product Profile 8-bit PIC Microcontrollers Microchip’s PIC® family of microcontrollers combine high-performance, low cost and small package size to offer the best price/ performance ratio in the industry. Based on a powerful RISC core, these 8-bit PIC®microcontrollers fall into three product architecture


    Original     		PDF 12-bit 14-bit PIC18) 16-bit DS00148L2 DS00148L2* MCP60421 mcp61421 PIC16F877 stepper motor interfacing PIC16F874A SD card Thermistor 20SP switch reluctance motor control using pic18F46K20 ENC28J60 mplab icd 3 mclr pgd pgc pic16f722 TC1426 rf transmitter and receiver for pic16f887

    MCP9808

    Abstract: MCP3903 mtd6505 MCP3910 mcp2210 mcp3911 MCP14E8 PIC18f4550 assembly programming PWM MCP16322 MCP4706
    Text: Analog and Interface Product Solutions Spring 2012 Analog and Interface Product Selector Guide  Thermal Management  Motor Drivers  Interface Peripherals  Power Management  Linear & Mixed-Signal  Safety & Security www.microchip.com/analog


    Original     		PDF DS21060Z DS21060Z* MCP9808 MCP3903 mtd6505 MCP3910 mcp2210 mcp3911 MCP14E8 PIC18f4550 assembly programming PWM MCP16322 MCP4706

    PIC18f4550 assembly programming PWM

    Abstract: MCP3909 MICROCHIP CROSS TC4428 TC620 CROSS tc1047 cross reference TC1029 pt100 to92
    Text: Analog and Interface Product Solutions Stand-Alone Analog and Interface Solutions „ Thermal Management „ Battery Management „ Power Management „ Linear & Mixed-Signal „ Interface Peripherals www.microchip.com/analog Are you Looking for Complete Analog & Interface Design Solutions?


    Original     		PDF auto-5869 DS21060L DS21060L* PIC18f4550 assembly programming PWM MCP3909 MICROCHIP CROSS TC4428 TC620 CROSS tc1047 cross reference TC1029 pt100 to92

    sn0636

    Abstract: SH 2104 MCP6546 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549
    Text: MCP6546/6R/6U/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • • • • • • • • • • • The Microchip Technology Inc. MCP6546/7/8/9 family of comparators is offered in single MCP6546, MCP6546R, MCP6546U , single with chip select


    Original     		PDF MCP6546/6R/6U/7/8/9 MCP6546/7/8/9 MCP6546, MCP6546R, MCP6546U) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5 sn0636 SH 2104 MCP6546 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549

    Untitled

    Abstract: No abstract text available
    Text: MCP6546/6R/6U/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • Low Quiescent Current: 600 nA/Comparator typical • Rail-to-Rail Input: VSS - 0.3V to VDD + 0.3V The Microchip Technology Inc. MCP6546/6R/6U/7/8/9 family of comparators, is offered in single (MCP6546,


    Original     		PDF MCP6546/6R/6U/7/8/9 MCP6546, MCP6546R, MCP6546U) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5*

    PIC18f4431 PWM example codes

    Abstract: PIC18F2680 Dc motor speed Controlled with Pic16F877A PIC12f675 example codes PIC16F84 PHOTOS PIC16f690 spi example codes PIC18F4550 example C18 lcd codes TC7107 microchip mcp3221 application PIC18f4520 PWM example codes
    Text: 2nd Half 2004 October - December 2004 Product Selector Guide Product Profile PICmicro Microcontrollers Microchip’s PICmicro® family of microcontrollers combine high performance, low cost and small package size to offer the best price/ performance ratio in the industry. Based on a powerful RISC core, the PICmicro architecture provides users an easy migration path


    Original     		PDF DS00148J4 PIC18f4431 PWM example codes PIC18F2680 Dc motor speed Controlled with Pic16F877A PIC12f675 example codes PIC16F84 PHOTOS PIC16f690 spi example codes PIC18F4550 example C18 lcd codes TC7107 microchip mcp3221 application PIC18f4520 PWM example codes

    SN0729

    Abstract: MCP6546 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549 Marking Code 14L
    Text: MCP6546/6R/6U/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • • • • • • • • • • • The Microchip Technology Inc. MCP6546/6R/6U/7/8/9 family of comparators is offered in single MCP6546, MCP6546R, MCP6546U , single with chip select (CS)


    Original     		PDF MCP6546/6R/6U/7/8/9 MCP6546, MCP6546R, MCP6546U) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5 SN0729 MCP6546 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549 Marking Code 14L

    MCP6546

    Abstract: No abstract text available
    Text: New Performance Comparators offer Low-Voltage, Low-Current and feature Industry’s Lowest Quiescent Current Two families of push-pull and open drain devices offer ultra-low 600nA current for 8? S prop delay comparators Extending its leadership in the design of low power


    Original     		PDF 600nA MCP6541/42/43/44 MCP6546/47/48/49 MCP6546

    pic*16f73 bootloader rf transceiver

    Abstract: TC9400 fsk 24cxx usb programmer 3 phase pwm pic16f877 mcp68 DC MOTOR SPEED position CONtrol pwm pic16F877 3 switch PIC16f877a based door security system 13.56Mhz class e power amplifier RFID phase pwm pic16f877 RFID pic16f73
    Text: PRODUCT LINE CARD INCLUDING DEVELOPMENT TOOLS SECOND QUARTER 2002 Product Profile PICmicro Microcontrollers Microchip’s PICmicro® family of microcontrollers combine high performance, low cost and small package size to offer the best price/performance ratio in the industry. Based on a powerful RISC core, the PICmicro architecture provides users an easy


    Original     		PDF DS00148G2 pic*16f73 bootloader rf transceiver TC9400 fsk 24cxx usb programmer 3 phase pwm pic16f877 mcp68 DC MOTOR SPEED position CONtrol pwm pic16F877 3 switch PIC16f877a based door security system 13.56Mhz class e power amplifier RFID phase pwm pic16f877 RFID pic16f73

    4570 op amp

    Abstract: push pull converter with dsPIC MCP607 push-pull DC-dc converter TC1025 TC1026 TC1027 TC1028 TC1029 TC1030
    Text: TB065 Linear Circuit Devices for Applications in Battery Powered Wireless Systems Author: Patrick Maresca Microchip Technology Inc. INTRODUCTION Conventional wisdom says smaller is better where battery operated wireless systems are concerned. Higher silicon integration and smaller package technology have shrunk system electronics to the point where


    Original     		PDF TB065 DK-2750 D-85737 DS91065A-page 4570 op amp push pull converter with dsPIC MCP607 push-pull DC-dc converter TC1025 TC1026 TC1027 TC1028 TC1029 TC1030

    3 phase pwm pic16f877

    Abstract: 1X16 lcd module pic16f877a based spi sm 0038 ir receiver lcd 2*16 Side Brazed Ceramic Dual-In-Line Packages 28 One-chip telephone IC audio Amp. mosfet 1000 watt 400 Watt Audio amplifier IC control dc motor using Pic16F877A
    Text: PRODUCT LINE CARD INCLUDING DEVELOPMENT TOOLS 2ND HALF 2003 MOST CURRENT VERSION AVAILABLE ON WWW.MICROCHIP.COM WWW.MICROCHIP.COM Product Profile PICmicro Microcontrollers Microchip’s PICmicro® family of microcontrollers combine high performance, low cost and small package size to offer the best


    Original     		PDF DS00148H3 3 phase pwm pic16f877 1X16 lcd module pic16f877a based spi sm 0038 ir receiver lcd 2*16 Side Brazed Ceramic Dual-In-Line Packages 28 One-chip telephone IC audio Amp. mosfet 1000 watt 400 Watt Audio amplifier IC control dc motor using Pic16F877A

    MCP6522

    Abstract: MCP3424 MCP3428 MCAL MCP3425 SAMPLE CODE IN C MCP3426 Product Selector Guide TC1121 TC7107 microchip MCP4728
    Text: Analog and Interface Product Solutions Fall 2009 Analog and Interface Product Selector Guide  Thermal Management  Battery Management  Interface Peripherals  Power Management  Linear & Mixed-Signal  Safety & Security www.microchip.com/analog


    Original     		PDF DS21060S DS21060S* MCP6522 MCP3424 MCP3428 MCAL MCP3425 SAMPLE CODE IN C MCP3426 Product Selector Guide TC1121 TC7107 microchip MCP4728

    PIC Light Dimmer

    Abstract: dimmer ccs compiler PIC16f628a external oscillator 40mhz remote control transmitter circuit example PIC in ccs pic18f1320 pwm thermostat stepper MOTOR PIC16F628A PIC18F example code i2c uart PIC16F628a c program of pic 18
    Text: Take control of overall system power consumption in your next embedded design with Power Managed PIC microcontrollers featuring nanoWatt technology from Microchip Technology. These high-performance 8-bit microcontrollers feature Microchip’s proprietary nanoWatt Technology, which


    Original     		PDF 40MHz. DS30493A PIC Light Dimmer dimmer ccs compiler PIC16f628a external oscillator 40mhz remote control transmitter circuit example PIC in ccs pic18f1320 pwm thermostat stepper MOTOR PIC16F628A PIC18F example code i2c uart PIC16F628a c program of pic 18

    MCP6546

    Abstract: UV tape D-175 2TC2 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549
    Text: MCP6546/6R/6U/7/8/9 Open-Drain Output Sub-Microamp Comparators Features Description • • • • • • • • • • • The Microchip Technology Inc. MCP6546/6R/6U/7/8/9 family of comparators is offered in single MCP6546, MCP6546R, MCP6546U , single with chip select (CS)


    Original     		PDF MCP6546/6R/6U/7/8/9 MCP6546, MCP6546R, MCP6546U) MCP6548) MCP6547) MCP6549) OT-23-5, SC-70-5 MCP6546 UV tape D-175 2TC2 MCP6546R MCP6546U MCP6547 MCP6548 MCP6549

    IR RC5 encoder PIC

    Abstract: PIC18F45K20 demo board PIC16F877A Microcontroller architecture 15x10-bit PIC16F877A for sensor DM183022 48v battery charger lead pic16f877a based spi PIC18F96J60 PICmicro Reference Manual
    Text: October - December 2005 Update 2005 Product Selector Guide Product Profile 8-bit PICmicro Microcontrollers Microchip’s PICmicro® family of microcontrollers combine high performance, low cost and small package size to offer the best price/ performance ratio in the industry. Based on a powerful RISC core, these 8-bit PIC® microcontrollers fall into three product architecture


    Original     		PDF 12-bit 14-bit 896-14K PIC18) DS00148K4 IR RC5 encoder PIC PIC18F45K20 demo board PIC16F877A Microcontroller architecture 15x10-bit PIC16F877A for sensor DM183022 48v battery charger lead pic16f877a based spi PIC18F96J60 PICmicro Reference Manual

    MPC73832

    Abstract: mcp60021 switch reluctance motor control using pic18F46K20 PIC18FXXKXX mcp61421 MCP3909 LCD AC162 DM164120-3 PIC16f877a c code for ethernet module enc28j60 PIC16F874A SD card
    Text: January - June 2007 2007 Product Selector Guide Product Profile 8-bit PIC Microcontrollers Microchip’s 8-bit PIC® microcontrollers combine high-performance, low cost and small package size to offer the best price/ performance ratio in the industry. Based on a powerful RISC core, these 8-bit PIC®microcontrollers fall into three product architecture


    Original     		PDF 12-bit 14-bit PIC18) 16-bit DS00148M DS00148L2* MPC73832 mcp60021 switch reluctance motor control using pic18F46K20 PIC18FXXKXX mcp61421 MCP3909 LCD AC162 DM164120-3 PIC16f877a c code for ethernet module enc28j60 PIC16F874A SD card