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    AT 89C51 ARCHITECTURE Search Results

    AT 89C51 ARCHITECTURE Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    MPC860DPCZQ50D4 Rochester Electronics LLC MPC860DP - PowerQUICC, 32 Bit Power Architecture SoC, 50MHz, -40 to 95C Visit Rochester Electronics LLC Buy
    MPC860PCVR66D4 Rochester Electronics LLC MPC860P - PowerQUICC, 32 Bit Power Architecture SoC, 66MHz, -40 to 95C Visit Rochester Electronics LLC Buy
    MPC860TCVR50D4 Rochester Electronics LLC MPC860T - PowerQUICC, 32 Bit Power Architecture, 50MHz, Communications Processor, -40 to 95C Visit Rochester Electronics LLC Buy
    MPC860DEVR50D4 Rochester Electronics LLC MPC860DE - PowerQUICC, 32 Bit Power Architecture SoC, 50MHz, 0 to 95C Visit Rochester Electronics LLC Buy
    MPC860ENZQ66D4 Rochester Electronics LLC MPC860EN - PowerQUICC, 32 Bit Power Architecture SoC, 66MHz, 0 to 95C Visit Rochester Electronics LLC Buy

    AT 89C51 ARCHITECTURE Datasheets Context Search

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    AT89C51 INSTRUCTIONS SET

    Abstract: program for digital clock AT89C51 digital clock programming AT89C51 digital clock using AT89C51 digital clock using c AT89C51 89c51 c programming codes AT89C51 INSTRUCTION SET MICROCONTROLLER AT89C51 pin diagram at89c51 digital clock digital lock using AT89C51
    Text: Atmel 8051 Microcontroller Family - Product Selection Guide Device 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 1K 1K 2K 4K 4K 8K 20K 8K 12K ON-CHIP MEMORY Flash Bytes EEPROM (Bytes) 2K SRAM (Bytes) 64 64 128 128 128 256 256 256 256 In-System Programmable (ISP)


    Original     		PDF 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 AT89C51-20PI AT89C51 INSTRUCTIONS SET program for digital clock AT89C51 digital clock programming AT89C51 digital clock using AT89C51 digital clock using c AT89C51 89c51 c programming codes AT89C51 INSTRUCTION SET MICROCONTROLLER AT89C51 pin diagram at89c51 digital clock digital lock using AT89C51

    8051s

    Abstract: ic 8051 8051 opcode at 89c51 architecture opcodes 89c51 introduction to microcontroller 89C51 OPCODE SHEET FOR 8051 MICROCONTROLLER advantages of 89c51 microcontroller over 8051 89C450 8051 Family
    Text: Maxim > App Notes > MICROCONTROLLERS Keywords: microcontrollers, 89C430, 89C450, 89C51, 89C51RD2, 87C520, 1-clock, UHSM Feb 11, 2005 APPLICATION NOTE 3452 Instant Performance Enhancement with Flash Microcontrollers Abstract: The ultra-high-speed flash microcontrollers UHSFM are 5V, 1-clock 8051s with integrated flash and


    Original     		PDF 89C430, 89C450, 89C51, 89C51RD2, 87C520, 8051s com/an3452 DS87C520: DS89C430: ic 8051 8051 opcode at 89c51 architecture opcodes 89c51 introduction to microcontroller 89C51 OPCODE SHEET FOR 8051 MICROCONTROLLER advantages of 89c51 microcontroller over 8051 89C450 8051 Family

    89c51 atmel specification

    Abstract: atmel 89c52 instruction set atmel 8051 microcontroller digital code lock system using 89c52 20 pin Atmel 89C2051 microcontroller temperature controller program for 89c2051 89c51 c programming codes 89S53 instruction set atmel 89c52 digital clock with atmel 8051
    Text: Atmel 8051 Microcontroller Family - Product Selection Guide Device 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 1K 1K 2K 4K 4K 8K 20K 8K 12K ON-CHIP MEMORY Flash Bytes EEPROM (Bytes) 2K SRAM (Bytes) 64 64 128 128 128 256 256 256 256 In-System Programmable (ISP)


    Original     		PDF 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 MS-001 89c51 atmel specification atmel 89c52 instruction set atmel 8051 microcontroller digital code lock system using 89c52 20 pin Atmel 89C2051 microcontroller temperature controller program for 89c2051 89c51 c programming codes 89S53 instruction set atmel 89c52 digital clock with atmel 8051

    20 pin Atmel 89C4051 microcontroller

    Abstract: temperature controller using 89c51 20 pin Atmel 89C4051 microcontroller Datasheet pin diagram of 89c2051 microcontroller AT89C4051 MICRO CONTROLLER atmel 89c52 digital code lock system using 89c52 89C4051 atmel 89c2051 datasheet programming 89C2051
    Text: Atmel 8051 Microcontroller Family - Product Selection Guide Device 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 1K 1K 2K 4K 4K 8K 20K 8K 12K ON-CHIP MEMORY Flash Bytes EEPROM (Bytes) 2K SRAM (Bytes) 64 64 128 128 128 256 256 256 256 In-System Programmable (ISP)


    Original     		PDF 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 20-Lead, 20 pin Atmel 89C4051 microcontroller temperature controller using 89c51 20 pin Atmel 89C4051 microcontroller Datasheet pin diagram of 89c2051 microcontroller AT89C4051 MICRO CONTROLLER atmel 89c52 digital code lock system using 89c52 89C4051 atmel 89c2051 datasheet programming 89C2051

    P89C51RD2XX

    Abstract: 89C51RD2xx programmer for 89c51 plcc68 89C51RB2xx 12CLK dh14 89c51 isp P87LPC769 89C51RD2 P87C51
    Text: Semiconductors Temp. Range Op-tions Freq. Range at 5V [MHz] Max. Freq. [MHz] Optional Clock Rate Default Clock Rate I/O Pins ADC bits/ch. SPI CAN I2C UART Serial Interface WD PCA PWM # of Tim. Timer PP/ISP/ IAP? Flash OTP ROM 80C51 Memory RAM Type Freq. Range


    Original     		PDF 80C51 80C51 BD100 85C30 P89C51RD2XX 89C51RD2xx programmer for 89c51 plcc68 89C51RB2xx 12CLK dh14 89c51 isp P87LPC769 89C51RD2 P87C51

    at89c52 digital clock

    Abstract: digital lock using AT89C51 20 pin Atmel 89C4051 microcontroller 89c51 c programming codes digital code lock system using 89c52 89C1051 Atmel 89C51 microcontroller Datasheet atmel 89c52 digital clock program for 89c52 at 89c51 architecture
    Text: Atmel 8051 Microcontroller Family - Product Selection Guide Device 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 1K 1K 2K 4K 4K 8K 20K 8K 12K ON-CHIP MEMORY Flash Bytes EEPROM (Bytes) 2K SRAM (Bytes) 64 64 128 128 128 256 256 256 256 In-System Programmable (ISP)


    Original     		PDF 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 89C55-16PA at89c52 digital clock digital lock using AT89C51 20 pin Atmel 89C4051 microcontroller 89c51 c programming codes digital code lock system using 89c52 89C1051 Atmel 89C51 microcontroller Datasheet atmel 89c52 digital clock program for 89c52 at 89c51 architecture

    Atmel 89C51 microcontroller Datasheet

    Abstract: introduction to microcontroller 89C51 all 89c51 microcontroller data sheet Atmel 89C51 microcontroller Microcontroller advantages of AT89C51 Microcontroller AT89C51 architecture 29LV040 at 89c51 architecture 89c51 microcontroller 89C51 EXTERNAL RAM
    Text: Flash Programming Atmel’s AT29 Flash Family Introduction Atmel offers a diverse family of small sector Flash memory devices ranging in density from 256K to 4M bits. These devices read and program with a single voltage supply. The nominal supply voltage is 5V for the AT29CXXX, 3.3V for


    Original     		PDF AT29CXXX, AT29LVXXX, AT29BVXXX a9C040 29C040 0x0400; 29C040 Atmel 89C51 microcontroller Datasheet introduction to microcontroller 89C51 all 89c51 microcontroller data sheet Atmel 89C51 microcontroller Microcontroller advantages of AT89C51 Microcontroller AT89C51 architecture 29LV040 at 89c51 architecture 89c51 microcontroller 89C51 EXTERNAL RAM

    Atmel 89C51 microcontroller Datasheet

    Abstract: ATmel 89c51 Atmel 89C51 microcontroller introduction to microcontroller 89C51 A29c040 atmel 89c51 cc AT29 Flash Family ATmel AT89C51 89c51 atmel specification at 89c51 architecture
    Text: Programming Atmel’s AT29 Flash Family Introduction Atmel offers a diverse family of small sector Flash memory devices ranging in density from 256K to 4M bits. These devices read and program with a single voltage supply. The nominal supply voltage is 5V for the AT29CXXX, 3.3V for


    Original     		PDF AT29CXXX, AT29LVXXX, AT29BVXXX 0518B 10/98/xM Atmel 89C51 microcontroller Datasheet ATmel 89c51 Atmel 89C51 microcontroller introduction to microcontroller 89C51 A29c040 atmel 89c51 cc AT29 Flash Family ATmel AT89C51 89c51 atmel specification at 89c51 architecture

    PXC52

    Abstract: atmel 89c55 intel 80c535 n User Manual Hitex AX51 Emulator SDA30C164 HITEX TELETEST 51 80c31 code manual 89C2051 APPLICATIONS MX51-B intel 8051 microcontroller architecture
    Text: Product Catalog 1/98 Development Tools for the - 8051 Family - MCS-251 Family General Information This catalog gives an overview of the products offered by Hitex's 8051 team. As for the prices, please see the attached price list. All prices are subject to change without notice.


    Original     		PDF MCS-251® PLCC68 8x930H APX930A 8x930A PP251 PXC52 atmel 89c55 intel 80c535 n User Manual Hitex AX51 Emulator SDA30C164 HITEX TELETEST 51 80c31 code manual 89C2051 APPLICATIONS MX51-B intel 8051 microcontroller architecture

    AT89C51 INSTRUCTIONS SET

    Abstract: AT89C51 INSTRUCTION SET AT89C51 Crystal oscillator 12 MHz MICROCONTROLLER AT89C51 pin diagram program protection mode of AT89c51 flash programmer circuit for AT89c51 AT89C51 PLCC 44 pin 89C51 interfacing AT89C51 PROGRAMMING INTERFACE circuit diagram for AT89C51
    Text: Features • • • • • • • • • • Compatible with MCS-51  Products 4 Kbytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 128 x 8-Bit Internal RAM


    Original     		PDF MCS-51TM 16-Bit AT89C51 AT89C51-24AC AT89C51-24JC AT89C51-24PC AT89C51-24QC AT89C51-24AI AT89C51-24JI AT89C51 INSTRUCTIONS SET AT89C51 INSTRUCTION SET AT89C51 Crystal oscillator 12 MHz MICROCONTROLLER AT89C51 pin diagram program protection mode of AT89c51 flash programmer circuit for AT89c51 AT89C51 PLCC 44 pin 89C51 interfacing AT89C51 PROGRAMMING INTERFACE circuit diagram for AT89C51

    MICROCONTROLLER AT89C51 pin diagram

    Abstract: Microcontroller - AT89C51 architecture Microcontroller AT89C51 architecture AT89C51 INSTRUCTIONS SET flash programmer circuit for AT89c51 AT89C51 Crystal oscillator 12 MHz atmel 89c51 cc program protection mode of AT89c51 AT89C51 INSTRUCTION SET AT89C51 PROGRAMMING INTERFACE
    Text: Features • Compatible with MCS-51 Products • 4K Bytes of In-System Reprogrammable Flash Memory • • • • • • • • – Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 128 x 8-Bit Internal RAM


    Original     		PDF MCS-51TM 16-Bit AT89C51 AT89C51-20PI AT89C51-20QI AT89C51-20AC AT89C51-20JC AT89C51 MICROCONTROLLER AT89C51 pin diagram Microcontroller - AT89C51 architecture Microcontroller AT89C51 architecture AT89C51 INSTRUCTIONS SET flash programmer circuit for AT89c51 AT89C51 Crystal oscillator 12 MHz atmel 89c51 cc program protection mode of AT89c51 AT89C51 INSTRUCTION SET AT89C51 PROGRAMMING INTERFACE

    MICROCONTROLLER AT89C51 pin diagram

    Abstract: AT89C51 Crystal oscillator 12 MHz AT89C51 INSTRUCTIONS SET flash programmer circuit for AT89c51 Microcontroller AT89C51 architecture led interfacing with 89C51 program protection mode of AT89c51 AT89C51 INSTRUCTION SET led interface with AT89C51 AT89C51 PROGRAMMING INTERFACE
    Text: AT89C51 Features • • • • • • • • • • Compatible with MCS-51  Products 4 Kbytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 128 x 8-Bit Internal RAM


    Original     		PDF AT89C51 MCS-51TM 16-Bit AT89C51 -12AC AT89C51-12JC AT89C51-12PC AT89C51-12QC AT89C51-12AA MICROCONTROLLER AT89C51 pin diagram AT89C51 Crystal oscillator 12 MHz AT89C51 INSTRUCTIONS SET flash programmer circuit for AT89c51 Microcontroller AT89C51 architecture led interfacing with 89C51 program protection mode of AT89c51 AT89C51 INSTRUCTION SET led interface with AT89C51 AT89C51 PROGRAMMING INTERFACE

    atmel 8051 microcontroller

    Abstract: 89s53 atmel 89c52 instruction set digital code lock system using 89c52 89C4051 stop watch atmel 89c51 MCS Series atmel 89c52 89C1051 Automatic Dam Control Using 89c51
    Text: Atmel 8051 Microcontroller Family - Product Selection Guide Device 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 1K 1K 2K 4K 4K 8K 20K 8K 12K ON-CHIP MEMORY Flash Bytes EEPROM (Bytes) 2K SRAM (Bytes) 64 64 128 128 128 256 256 256 256 In-System Programmable (ISP)


    Original     		PDF 89C1051 89C1051U 89C2051 89C4051 89C51 89C52 89C55 89S8252 89S53 AT89S53-16AA atmel 8051 microcontroller 89s53 atmel 89c52 instruction set digital code lock system using 89c52 89C4051 stop watch atmel 89c51 MCS Series atmel 89c52 89C1051 Automatic Dam Control Using 89c51

    Atmel 89C51 microcontroller Datasheet

    Abstract: MICROCONTROLLER AT89C51 pin diagram Atmel 89C51 microcontroller plcc Microcontroller AT89C51 architecture AT89C51 INSTRUCTIONS SET MICROCONTROLLER AT89S51 pin diagram AT89C51 microcontroller atmel 89C51 Atmel 89C51 microcontroller pin configuration AT89C51 PLCC 44 pin
    Text: Features • Compatible with MCS-51 Products • 4K Bytes of In-System Reprogrammable Flash Memory • • • • • • • • – Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-level Program Memory Lock 128 x 8-bit Internal RAM


    Original     		PDF MCS-51TM 16-bit AT89C51 MCS-51 0265G 02/00/xM Atmel 89C51 microcontroller Datasheet MICROCONTROLLER AT89C51 pin diagram Atmel 89C51 microcontroller plcc Microcontroller AT89C51 architecture AT89C51 INSTRUCTIONS SET MICROCONTROLLER AT89S51 pin diagram AT89C51 microcontroller atmel 89C51 Atmel 89C51 microcontroller pin configuration AT89C51 PLCC 44 pin

    AT89X52

    Abstract: AT898252 atmel 8052 microcontroller AT89C2051 Assembler Users Guide at89x51 8052 intel assembly language code list 89c51 hex code atmel 8052 MCS-51 Macro Assembler Users Guide MCS-96 Macro Assembler Users guide
    Text: Integrated Development System for the 8051 PRODUCT OVERVIEW Preliminary Manual PK51 Product Overview V1.03 Copyright Information Information in this document is subject to change without notice and does not represent a commitment on the part of the manufacturer. The software described in


    Original     		PDF C51TM MCS-51 AT89X52 AT898252 atmel 8052 microcontroller AT89C2051 Assembler Users Guide at89x51 8052 intel assembly language code list 89c51 hex code atmel 8052 MCS-51 Macro Assembler Users Guide MCS-96 Macro Assembler Users guide

    temperature controller using 89c51

    Abstract: circuit diagram of smart home alarm system introduction to microcontroller 89C51 ISO7816-4 application notes 89c51 C293D-D iso7816 PPS 89c51 philips at 89c51 architecture iso7816 Smart Cards Reader
    Text: APPLICATION NOTE Serial PC/SC Dual Smart Card Reader Using TDA8007B and P8XC51RD+ Mask 04 AN00027 Philips Semiconductors Application Note AN00027 TDA8007B Mask 04 Serial PC/SC Dual Smart Card Reader Preface This application note describes the software developed on a 8XC51RD+ microcontroller used


    Original     		PDF TDA8007B P8XC51RD+ AN00027 8XC51RD+ TDA8007B. 705-D RW43V temperature controller using 89c51 circuit diagram of smart home alarm system introduction to microcontroller 89C51 ISO7816-4 application notes 89c51 C293D-D iso7816 PPS 89c51 philips at 89c51 architecture iso7816 Smart Cards Reader

    nec c251

    Abstract: application notes 89c51 zilog Z280 80C186-16 intel 80c188 Zilog Z180 Atmel 89C51 microcontroller Datasheet a2431 TMPR3904AF 8031 intel
    Text: Your MCU EasyFLASHTM PSD MCU INTERFACE PSD Glue-less Fit with MCUs PSDs Programmable Interface Supports Virtually ANY 8 or 16-bit MCU Presentation #8 EasyFLASHTM 200004mcuinterface 1 Available Presentations • Main Presentations Recommended : – Presentation 1:


    Original     		PDF 16-bit 200004mcuinterface 1-877-WSI-PSDS nec c251 application notes 89c51 zilog Z280 80C186-16 intel 80c188 Zilog Z180 Atmel 89C51 microcontroller Datasheet a2431 TMPR3904AF 8031 intel

    atmel 89c51 cc

    Abstract: No abstract text available
    Text: AT89C51 Features • Compatible with MCS-51<1>Products • 4K Bytes of In-Clrcult Re-Programmable Flash Memory Endurance: 1000 Write/Erase Cycles Data Retention: 10 Years • Wide Operating Voltage Range: V c c = 2.7V to 6V • Fully Static Operation: 0 Hz to 16 MHz


    OCR Scan     		PDF AT89C51 16-BIt AT89C5 atmel 89c51 cc

    89c51 hex code

    Abstract: 20C04 ASSEMBLY LANGUAGE FOR AT89C51 29C04
    Text: Flash Programming Atmel’s AT29 Flash Family Introduction Atmel offers a diverse family of small sector Flash memory devices ranging in density from 256K to 4M bits. These de­ vices read and program with a single voltage supply. The nominal supply volt­


    OCR Scan     		PDF AT29CXXX, AT29LVXXX, AT29BVXXX 29C040 0x0400 29C040 AT29C040A AT89C51 89c51 hex code 20C04 ASSEMBLY LANGUAGE FOR AT89C51 29C04

    89c51 can bus

    Abstract: No abstract text available
    Text: AT89C51 Features • Compatible with MCS-51W Products • 4K Bytes of In-Clrcult Re-Programmable Flash Memory Endurance: 1000 Write/Erase Cycles Data Retention: 10 Years • Wide Operating Voltage Range: Vcc = 2.7V to 6V 8-Bit • Fully Static Operation: 0 Hz to 16 MHz


    OCR Scan     		PDF AT89C51 MCS-51W 16-Bit AT89C5 89c51 can bus

    AT89C51 INSTRUCTION SET

    Abstract: AT89C51 PROGRAMMING INTERFACE 89c51 atmel programing specification ic at89c51 Flash perom 89C51 At89c51 programming pin diagram of ic 89c51 program data memory 89C51 AT89C51 INSTRUCTIONS SET
    Text: AT89C51 Features • Compatible with MCS-51 1>Products • 4K Bytes of In-Circuit Re-Programmable Flash Memory Endurance: 1000 Write/Erase Cycles Data Retention: 10 Years • Wide Operating Voltage Range: V cc = 2.7V to 6V 8-Bit Microcontroller with 4K Byte


    OCR Scan     		PDF AT89C51 MCS-51 16-Blt AT89C51 91-Zl AT89C51 INSTRUCTION SET AT89C51 PROGRAMMING INTERFACE 89c51 atmel programing specification ic at89c51 Flash perom 89C51 At89c51 programming pin diagram of ic 89c51 program data memory 89C51 AT89C51 INSTRUCTIONS SET

    MICROCONTROLLER AT89C51 pin diagram

    Abstract: timer using AT89c51 AT89C51 INSTRUCTION SET AT89C51 Crystal oscillator 12 MHz AT89C51-24PI program for at89c51 AT89C51 INSTRUCTIONS SET AT89C51-12PC Microcontroller AT89C51 architecture at 89c51 architecture
    Text: AT89C51 Features • • • • • • • • • • Compatible with MCS-51 Products 4 Kbytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 128 x 8-Bit Internal RAM


    OCR Scan     		PDF AT89C51 MCS-51TM 16-Bit Military/883C MICROCONTROLLER AT89C51 pin diagram timer using AT89c51 AT89C51 INSTRUCTION SET AT89C51 Crystal oscillator 12 MHz AT89C51-24PI program for at89c51 AT89C51 INSTRUCTIONS SET AT89C51-12PC Microcontroller AT89C51 architecture at 89c51 architecture

    ic at89c51

    Abstract: MICROCONTROLLER AT89C51 pin diagram AT89C51 INSTRUCTION SET pin configuration of ic AT89c51 ic at89c51 pin diagram pin diagram of ic 89c51 Microcontroller - AT89C51 architecture MC AT89C51 program for at89c51 T89C51
    Text: Features * Compatible with MCS-51 Products * 4K Bytes of In-System Reprogrammable Flash Memory - Endurance: 1,000 Write/Erase Cycles * Fully Static Operation: 0 Hz to 24 MHz * Three-Level Program Memory Lock * 128 x 8-Bit Internal RAM * 32 Programmable I/O Lines


    OCR Scan     		PDF MCS-51TM 16-Bit AT89C51 AT89C51 MCAT89C51-20JC AT89C51-20PC AT89C51-20QC AT89C51-20AI AT89C51-20JI AT89C51-20PI ic at89c51 MICROCONTROLLER AT89C51 pin diagram AT89C51 INSTRUCTION SET pin configuration of ic AT89c51 ic at89c51 pin diagram pin diagram of ic 89c51 Microcontroller - AT89C51 architecture MC AT89C51 program for at89c51 T89C51

    AT89C51 INSTRUCTIONS SET

    Abstract: ic at89c51
    Text: Features Compatible with MCS-51 Products 4K Bytes of In-System Reprogrammable Flash Memory - Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-Level Program Memory Lock 1 2 8 x 8 -Bit Interna I RAM 32 Programmable I/O Lines


    OCR Scan     		PDF MCS-51â 16-Bit AT89C51 AT89C51-12PA AT89C51-12JA AT89C51 AT89C51-24AC AT89C51-24JC AT89C51 INSTRUCTIONS SET ic at89c51