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    ATMEL - AT89C2051 MEMORY Search Results

    ATMEL - AT89C2051 MEMORY Result Highlights (5)

    Part ECAD Model Manufacturer Description Download Buy
    AM27LS07PC Rochester Electronics LLC 27LS07 - Standard SRAM, 16X4 Visit Rochester Electronics LLC Buy
    MD2716M/B Rochester Electronics LLC 2716M - 2Kx8 EPROM Visit Rochester Electronics LLC Buy
    CY7C167A-35PC Rochester Electronics LLC CY7C167A - CMOS SRAM Visit Rochester Electronics LLC Buy
    2964B/BUA Rochester Electronics LLC 2964B - Dynamic Memory Controller Visit Rochester Electronics LLC Buy
    TN28F020-90 Rochester Electronics LLC 28F020 - 2048K (256K x 8) CMOS Flash Memory Visit Rochester Electronics LLC Buy

    ATMEL - AT89C2051 MEMORY Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    MUX 74157

    Abstract: CMOS 4011 AT89C2051 MICROCONTROLLER cmos 4040 74157 mux Microcontroller - AT89C2051 instruction set WE Y1 P3_6 DAQS panel-meter Microcontroller AT89C2051
    Text: PC-Interfaced Data Acquisition System with the Atmel AT89C2051 Microcontroller Introduction The features of the Atmel AT89C2051 microcontroller offer the user the chance to achieve a very low-cost/performance data acquisition system DAQS for low-frequency applications.


    Original     		AT89C2051 AT89C2051 MUX 74157 CMOS 4011 AT89C2051 MICROCONTROLLER cmos 4040 74157 mux Microcontroller - AT89C2051 instruction set WE Y1 P3_6 DAQS panel-meter Microcontroller AT89C2051 PDF

    lcd interface with at89c2051

    Abstract: digital thermometer with atmel 8051 digital thermometer using 8051 AT89C2051 ic 8051 microcontroller thermometer LCD ASCII CODE c source code serial communication with AT89c2051 ATmel AT89C2051 AT89C2051 485 Thermometer clock LCD ic
    Text: A Digital Thermometer Using the AT89C2051 Microcontroller Introduction The system presented in this application note implements a simple digital thermometer that includes a built-in LCD and RS-485 communication port. It is designed around Atmel’s AT89C2051


    Original     		AT89C2051 RS-485 AT89C2051 DS1620 RS485 DS1620 lcd interface with at89c2051 digital thermometer with atmel 8051 digital thermometer using 8051 AT89C2051 ic 8051 microcontroller thermometer LCD ASCII CODE c source code serial communication with AT89c2051 ATmel AT89C2051 AT89C2051 485 Thermometer clock LCD ic PDF

    digital clock using AT89C51

    Abstract: ic at89c51 digital clock programming AT89C51 digital clock using the Atmel AT89C51 at89c52 digital clock program for digital clock AT89C51 atmel 2051 AT89C51 INSTRUCTIONS SET at89c51 digital clock FOR AT89C51
    Text: Designing Boards with Atmel AT89C51, AT89C52, AT89C1051, and AT89C2051 for Writing Flash at In-Circuit Test Recent improvements in chips and testers have made it possible for the tester to begin taking over the role traditionally assigned to the PROM programmer. Instead of having a PROM programmer write nonvolatile memories


    Original     		AT89C51, AT89C52, AT89C1051, AT89C2051 Z18series AT89C AT89C1051/205252 digital clock using AT89C51 ic at89c51 digital clock programming AT89C51 digital clock using the Atmel AT89C51 at89c52 digital clock program for digital clock AT89C51 atmel 2051 AT89C51 INSTRUCTIONS SET at89c51 digital clock FOR AT89C51 PDF

    11.0592 CRYSTAL used in microcontroller at89c52

    Abstract: AT89C51 Crystal oscillator 12 MHz 7 segment use at89c2051 AT89C51 INSTRUCTIONS SET 11.0592 CRYSTAL used in microcontroller at89c51 p AT89C51 INSTRUCTION SET 11.0592 CRYSTAL used in microcontroller at89c51 clock 7 segment use at89c2051 AT89C2051 internal RAM memory map Microcontroller - AT89C2051 pin diagram
    Text: The information presented in this chapter is collected from the Microcontroller Architectural Overview, AT89C51, AT89LV51, AT89C52, AT89LV52, AT89C2051, and AT89C1051 data sheets of this book. The material has been selected and rearranged to form a quick and convenient reference for the programmers of Atmel’s microcontroller family of devices. This guide pertains specifically to the AT89C51, AT89LV51,


    Original     		AT89C51, AT89LV51, AT89C52, AT89LV52, AT89C2051, AT89C1051 AT89LV52. 11.0592 CRYSTAL used in microcontroller at89c52 AT89C51 Crystal oscillator 12 MHz 7 segment use at89c2051 AT89C51 INSTRUCTIONS SET 11.0592 CRYSTAL used in microcontroller at89c51 p AT89C51 INSTRUCTION SET 11.0592 CRYSTAL used in microcontroller at89c51 clock 7 segment use at89c2051 AT89C2051 internal RAM memory map Microcontroller - AT89C2051 pin diagram PDF

    AT89c2051-24pu programmer

    Abstract: AT89C2051-24PU 89C2051 APPLICATIONS Microcontroller - AT89C2051 pin diagram 20 pin Atmel 89C2051 microcontroller 89C2051 AT89C2051-24SU atmel 89c2051 flash programmer circuit for AT89c2051 Microcontroller - AT89C2051 instruction set
    Text: Features • Compatible with MCS -51Products • 2K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • • – Endurance: 10,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-level Program Memory Lock


    Original     		-51Products 16-bit AT89C2051 AT89C2051 0368H AT89c2051-24pu programmer AT89C2051-24PU 89C2051 APPLICATIONS Microcontroller - AT89C2051 pin diagram 20 pin Atmel 89C2051 microcontroller 89C2051 AT89C2051-24SU atmel 89c2051 flash programmer circuit for AT89c2051 Microcontroller - AT89C2051 instruction set PDF

    Microcontroller - AT89C2051 instruction set

    Abstract: Microcontroller - AT89C2051 pin diagram AT89C2051 MICRO CONTROLLER at89c2051-24pi AT89C2051 PROGRAMMING INTERFACE flash programmer circuit for AT89c2051 AT89C2051 circuit s pin diagram of at89c2051 pin diagram of AT89c2051 microcontroller Microcontroller - AT89C2051 idle mode
    Text: Features • Compatible with MCS -51Products • 2K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • • – Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-level Program Memory Lock


    Original     		-51Products 16-bit AT89C2051 AT89C2051 0368G Microcontroller - AT89C2051 instruction set Microcontroller - AT89C2051 pin diagram AT89C2051 MICRO CONTROLLER at89c2051-24pi AT89C2051 PROGRAMMING INTERFACE flash programmer circuit for AT89c2051 AT89C2051 circuit s pin diagram of at89c2051 pin diagram of AT89c2051 microcontroller Microcontroller - AT89C2051 idle mode PDF

    89C2051

    Abstract: CONTROLLER Microcontroller - AT89C2051 pin diagram flash programmer circuit for AT89c2051 ATmel AT89C2051 AT89C2051-24SI what is AT in AT89C2051 at89c2051 20 pin Atmel 89C2051 microcontroller pin diagram of 89c2051 microcontroller
    Text: Features • Compatible with MCS-51 Products • 2K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • – Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-level Program Memory Lock


    Original     		MCS-51TM 16-bit AT89C2051 0368E 02/00/xM 89C2051 CONTROLLER Microcontroller - AT89C2051 pin diagram flash programmer circuit for AT89c2051 ATmel AT89C2051 AT89C2051-24SI what is AT in AT89C2051 20 pin Atmel 89C2051 microcontroller pin diagram of 89c2051 microcontroller PDF

    Microcontroller - AT89C2051 pin diagram

    Abstract: pin configuration of 89c2051 Microcontroller - AT89C2051 instruction set flash programmer circuit for AT89c2051 89C2051 pin diagram of 89c2051 microcontroller 20 pin 89C2051 AT89C2051 PROGRAMMING INTERFACE AT89C2051 MICRO CONTROLLER atmel AT89C2051-24PI
    Text: Features • Compatible with MCS -51Products • 2K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • • – Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-level Program Memory Lock


    Original     		-51Products 16-bit AT89C2051 AT89C2051 0368f Microcontroller - AT89C2051 pin diagram pin configuration of 89c2051 Microcontroller - AT89C2051 instruction set flash programmer circuit for AT89c2051 89C2051 pin diagram of 89c2051 microcontroller 20 pin 89C2051 AT89C2051 PROGRAMMING INTERFACE AT89C2051 MICRO CONTROLLER atmel AT89C2051-24PI PDF

    serial communication with AT89c2051

    Abstract: AT89C2051 internal RAM memory map AT89C2051 PROGRAMMING INTERFACE AT89C2051 internal memory map AT89C2051 microcontroller interrupt timer code AT89c2051 Application Note AT89C2051 microcontroller interrupt 8051 UART Program Examples AT89C2051 pin function Microcontroller AT89C2051 pin function
    Text: Migrating from AT89C2051/C4051 to AT89LP2052/LP4052 New Features • • • • • • • • • • • • • • • • • 20 MIPS throughput at 20 MHz Clock Frequency and 2.7V, 85°C Operating Conditions Single Clock Cycle per Byte Fetch Serial Interface for Program Downloading


    Original     		AT89C2051/C4051 AT89LP2052/LP4052 32-byte 16-bit serial communication with AT89c2051 AT89C2051 internal RAM memory map AT89C2051 PROGRAMMING INTERFACE AT89C2051 internal memory map AT89C2051 microcontroller interrupt timer code AT89c2051 Application Note AT89C2051 microcontroller interrupt 8051 UART Program Examples AT89C2051 pin function Microcontroller AT89C2051 pin function PDF

    LP4052

    Abstract: serial communication with AT89c2051 AT89C2051 PWM GENERATOR AT89C2051 microcontroller interrupt timer code Microcontroller AT89C2051 pin function AT89C2051 timer application AT89C2051 PROGRAMMING INTERFACE AT89c2051 Analog AT89C2051 microcontroller interrupt AT89C2051 internal memory map
    Text: Migrating from AT89C2051/C4051 to AT89LP2052/LP4052 New Features • • • • • • • • • • • • • • • • • 20 MIPS throughput at 20 MHz Clock Frequency and 2.7V, 85° C Operating Conditions Single Clock Cycle per Byte Fetch Serial Interface for Program Downloading


    Original     		AT89C2051/C4051 AT89LP2052/LP4052 32-byte 16-bit 3573B LP4052 serial communication with AT89c2051 AT89C2051 PWM GENERATOR AT89C2051 microcontroller interrupt timer code Microcontroller AT89C2051 pin function AT89C2051 timer application AT89C2051 PROGRAMMING INTERFACE AT89c2051 Analog AT89C2051 microcontroller interrupt AT89C2051 internal memory map PDF

    19654F

    Abstract: Atmel MARKING CODE AT89C2051 program atmel package marking at89c2051 at89c2051 application 2213a02 ATmel AT89C2051 Atmel Package marking information 200H
    Text: This errata sheet is applicable to the following device: • AT89C2051 Problem In Rev. “E” of the AT89C2051 device, whenever the power-down mode is invoked, the ICC current can suddenly and permanently exceed values above the maximum specified in the datasheet. The actual amount of current displayed in an application which


    Original     		AT89C2051 AT89C2051 02/01/xM 19654F Atmel MARKING CODE AT89C2051 program atmel package marking at89c2051 application 2213a02 ATmel AT89C2051 Atmel Package marking information 200H PDF

    Microcontroller - AT89C2051 instruction set

    Abstract: Microcontroller - AT89C2051 pin diagram AT89C2051 microcontroller flash programmer circuit for AT89c2051 programming 89C2051 AT89C2051 PROGRAMMING INTERFACE led interface with 89C2051 pin diagram of AT89c2051 microcontroller 89c2051 ATmel AT89C2051 lock bit
    Text: AT89C2051 Features • • • • • • • • • • • • • Compatible with MCS-51  Products 2 Kbytes of Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles 2.7 V to 6 V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock


    Original     		AT89C2051 MCS-51TM 16-Bit AT89C2051 AT89C2051-12PC AT89C2051-12SC AT89C2051-24PC AT89C2051-24SC Microcontroller - AT89C2051 instruction set Microcontroller - AT89C2051 pin diagram AT89C2051 microcontroller flash programmer circuit for AT89c2051 programming 89C2051 AT89C2051 PROGRAMMING INTERFACE led interface with 89C2051 pin diagram of AT89c2051 microcontroller 89c2051 ATmel AT89C2051 lock bit PDF

    S4051

    Abstract: AT89S051 serial communication with AT89c2051 AT89c2051 Application Note AT89c2051 Analog AT89C2051 microcontroller interrupt AT89C2051 microcontroller interrupt timer code AT89C2051 microcontroller AT89S2051 AT89C2051 internal memory map
    Text: Migrating from AT89C2051/C4051 to AT89S2051/S4051 Flash Microcontrollers New Features • 8-bit Pulse-width Modulation • Enhanced UART Serial Port with Framing Error Detection and Automatic • • • • • • • • • Address Recognition On-chip Analog Comparator with Selectable Interrupt


    Original     		AT89C2051/C4051 AT89S2051/S4051 AT89S2051/S4051. S4051 AT89S051 serial communication with AT89c2051 AT89c2051 Application Note AT89c2051 Analog AT89C2051 microcontroller interrupt AT89C2051 microcontroller interrupt timer code AT89C2051 microcontroller AT89S2051 AT89C2051 internal memory map PDF

    Microcontroller - AT89C2051 pin diagram

    Abstract: led interface with 89C2051 89c2051 AT89C2051 circuit s atmel AT89C2051-24PI Microcontroller - AT89C2051 instruction set at89c2051 datasheet AT89c2051 Analog led AT89c2051 AT89C2051 microcontroller interrupt timer code
    Text: Features • Compatible with MCS-51 Products • 2K Bytes of Reprogrammable Flash Memory • • • • • • • • • • • – Endurance: 1,000 Write/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock


    Original     		MCS-51TM 16-Bit AT89C2051 AT89C2051 AT89C2051-12PC AT89C2051-12SC AT89C2051-12PA AT89C2051-12SA AT89C2051-24PC Microcontroller - AT89C2051 pin diagram led interface with 89C2051 89c2051 AT89C2051 circuit s atmel AT89C2051-24PI Microcontroller - AT89C2051 instruction set at89c2051 datasheet AT89c2051 Analog led AT89c2051 AT89C2051 microcontroller interrupt timer code PDF

    4052 Primer

    Abstract: AT89C2051 microcontroller interrupt source and its vector address 7 segment use at89c2051 clock 7 segment use at89c2051 AT89ISP atmel 8051 sample code AT89S52 INSTRUCTION SET Microcontroller - AT89s52 AT25C040 serial communication with AT89c2051
    Text: AT89LP2052/4052 Primer 1. Introduction The Atmel AT89LP2052/4052 microcontroller is a low-power, high-performance device featuring an enhanced single-cycle 8051 CPU, 2K/4K bytes of Flash memory, 256 bytes of RAM, configurable I/O, an analog comparator, dual pulse width modulation PWM outputs, a UART, a Serial Peripheral Interface (SPI) and a watchdog


    Original     		AT89LP2052/4052 AT89C2051/4051 AT89C2051document 4052 Primer AT89C2051 microcontroller interrupt source and its vector address 7 segment use at89c2051 clock 7 segment use at89c2051 AT89ISP atmel 8051 sample code AT89S52 INSTRUCTION SET Microcontroller - AT89s52 AT25C040 serial communication with AT89c2051 PDF

    20 pin Atmel 89C2051 microcontroller

    Abstract: flash programmer circuit for AT89c2051 Atmel AT 2051 REAL TIME CLOCK using AT89C2051 led interface with 89C2051 20 pin 89C2051 AT89C2051 MICRO CONTROLLER AT89C2051 PROGRAMMING INTERFACE 2051 atmel atmel 89c2051 datasheet
    Text: Tools Support 8051 Family In-Circuit Emulator The EMUL51TM-PC is a high performance in-circuit emulator specifically designed to provide an optimal environment for 8051 family microcontroller hardware and software development. The EMUL51TM-PC consists of a board which plugs directly into


    Original     		EMUL51TM-PC EMUL51TM-PC RS-232 AT89C1051/2051 20-pin AS-20-2001S-6 20 pin Atmel 89C2051 microcontroller flash programmer circuit for AT89c2051 Atmel AT 2051 REAL TIME CLOCK using AT89C2051 led interface with 89C2051 20 pin 89C2051 AT89C2051 MICRO CONTROLLER AT89C2051 PROGRAMMING INTERFACE 2051 atmel atmel 89c2051 datasheet PDF

    20 pin Atmel 89C2051 microcontroller

    Abstract: AT89C2051 PROGRAMMING INTERFACE REAL TIME CLOCK using AT89C2051 Microcontroller - AT89C2051 pin function AT89C2051 internal memory map 2051-PD 2051 atmel 2051 89C2051 REAL TIME CLOCK WITH AT89C51
    Text: 8051 Family In-Circuit Emulator The EMUL51 -PC is a high performance in-circuit emulator specifically designed to provide an optimal environment for 8051 family microcontroller hardware and software development. The EMUL51-PC consists of a board which plugs directly into the IBM


    Original     		EMUL51TM-PC EMUL51-PC RS-232 EMUL51PC AT89C1051/2051 20-pin AS-20-20-01S-6 20 pin Atmel 89C2051 microcontroller AT89C2051 PROGRAMMING INTERFACE REAL TIME CLOCK using AT89C2051 Microcontroller - AT89C2051 pin function AT89C2051 internal memory map 2051-PD 2051 atmel 2051 89C2051 REAL TIME CLOCK WITH AT89C51 PDF

    MICROCONTROLLER AT89C51

    Abstract: AT8C51 Microcontroller AT8C51 smd code book ATmel AT89C2051 lock bit MICROCONTROLLER AT89 AT891051 AT89CS Atmel AT89C51 lock ATMEL CORPORATION
    Text: Atmel Corporation Microcontroller Data Book 1995 is the registered trademark of Atmel Corporation, 2125 O’Nel Drive, San Jose, CA 95131 Important Notice Atmel guarantees that its circuits will be free from defects of material and workmanship under normal use and service, and that these circuits will perform to current specifications in accordance


    Original     		29-ATMEL MICROCONTROLLER AT89C51 AT8C51 Microcontroller AT8C51 smd code book ATmel AT89C2051 lock bit MICROCONTROLLER AT89 AT891051 AT89CS Atmel AT89C51 lock ATMEL CORPORATION PDF

    93Cxx

    Abstract: AT89Cx051 AT93CXX at89c2051 AT89C1051 at89c2051 eeprom
    Text: Interfacing AT93CXX Serial EEPROMs with AT89CX051 Microcontrollers Serial memory devices offer significant advantages over parallel devices in applications where lower data transfer rates are acceptable. In addition to r eq ui r in g le s s bo ar d s p ac e, s er i al


    Original     		AT93CXX AT89CX051 AT89C1051 AT89C2051. 0521C 10/98/xM 93Cxx at89c2051 at89c2051 eeprom PDF

    atmel 0752

    Abstract: atmel 0704 atmel 0709 Atmel 0541 atmel 0945 24cxx eeprom programmer schematic atmel 0751 AT908515 ATMEl 0910 atmel 0838
    Text: Fax-on-Demand: North America 1- 800 292-8635 / International 1-(408) 441-0732 May 15, 1998 Doc # Description Application Specific Standard Products 0901 AT43310 USB Hub Last Update # of Pages Doc # 0696 Description Compiled Megacell Testing Last Update 3/97


    Original     		10-Bit atmel 0752 atmel 0704 atmel 0709 Atmel 0541 atmel 0945 24cxx eeprom programmer schematic atmel 0751 AT908515 ATMEl 0910 atmel 0838 PDF

    Atmel 89C51 microcontroller

    Abstract: Microcontroller - AT89C2051 pin diagram 8051 microcontroller free atmel 89C51 user manual microcontroller 89c51 pin diagram introduction to microcontroller 89C51 AT89S55 atmel 89C51 user guide atmel 8051 40-PIN AT 89C51 PLCC 44 pin
    Text: P le d ab el m e Fi m ar a w gr rd ro Ha State-of-the-art Device Programmer USER GUIDE Revision 1.04 Micro-Pro User Guide V1.04 Copyright Information Information in this document is subject to change without notice and does not represent a commitment on the part of the


    Original     		AT89C4051 AT89C51 AT89C52 AT89C55 AT89S8252 AT89S53 44-pin CAB-PAR25MM PSU-15250-UK, Atmel 89C51 microcontroller Microcontroller - AT89C2051 pin diagram 8051 microcontroller free atmel 89C51 user manual microcontroller 89c51 pin diagram introduction to microcontroller 89C51 AT89S55 atmel 89C51 user guide atmel 8051 40-PIN AT 89C51 PLCC 44 pin PDF

    Microcontroller - AT89C2051 pin diagram

    Abstract: No abstract text available
    Text: Features Com patible with MCS-51 Products 2K Bytes of Reprogram mable Flash Memory - Endurance: 1,000 W rite/Erase Cycles 2.7V to 6V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program M em ory Lock 1 2 8 x 8 - Bit Interna I RAM 15 Programmable I/O Lines


    OCR Scan     		MCS-51â 16-Bit AT89C2051 nonvolatil2051 AT89C2051 AT89C2051-12SI AT89C2051-12PA AT89C2051-12SA AT89C2051-12PI Microcontroller - AT89C2051 pin diagram PDF

    20 pin at89c2051 ic

    Abstract: Microcontroller - AT89C2051 pin diagram flash programmer circuit for AT89c2051 at89c2051 architecture pin diagram of AT89c2051 microcontroller 20 pin Atmel 89C2051 microcontroller AT89C2051 PROGRAMMING INTERFACE Microcontroller - AT89C2051 instruction set P320S
    Text: Features * Compatible with MCS-51 Products * 2K Bytes of Reprogrammable Flash Memory - Endurance: 1,000 Write/Erase Cycles * 2.7V to 6V Operating Range * Fully Static Operation: 0 Hz to 24 MHz * Two-Level Program Memory Lock * 128 x 8-Bit Internal RAM * 15 Programmable I/O Lines


    OCR Scan     		MCS-51TM 16-Bit AT89C2051 AT89C2051 2051-12P 2051-12S AT89C 20 pin at89c2051 ic Microcontroller - AT89C2051 pin diagram flash programmer circuit for AT89c2051 at89c2051 architecture pin diagram of AT89c2051 microcontroller 20 pin Atmel 89C2051 microcontroller AT89C2051 PROGRAMMING INTERFACE Microcontroller - AT89C2051 instruction set P320S PDF

    20 pin at89c2051 ic

    Abstract: AT89C2051 ic Microcontroller - AT89C2051 pin diagram AT89C2051 microcontroller 20 pin ic at89c2051 instruction set AT89C205I AT89C2051 internal memory map atmel AT89C2051-24PI T89C2051 ic 89c2051
    Text: AT89C2051 Features • • • • • • • • • • • • • Compatible with MCS-51 Products 2 Kbytes of Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles 2.7 V to 6 V Operating Range Fully Static Operation: 0 Hz to 24 MHz Two-Level Program Memory Lock


    OCR Scan     		AT89C2051 MCS-51TM 16-Bit AT89C2051-12PC AT89C2051-12SC AT89C2051-12PI AT89C2051-12SI AT89C2051-24PC 20 pin at89c2051 ic AT89C2051 ic Microcontroller - AT89C2051 pin diagram AT89C2051 microcontroller 20 pin ic at89c2051 instruction set AT89C205I AT89C2051 internal memory map atmel AT89C2051-24PI T89C2051 ic 89c2051 PDF