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Discontinued product. Closest replacement: SmartProg2 programmer.

MCS51 series and Atmel AVR microcontrollers ISP capable fast programmer

T51prog Short description:
  • small, very fast and powerful portable programmer of MCS51 series and Atmel AVR microcontrollers
  • developed in close cooperation with Atmel W&M (formerly Temic) company
  • in-circuit serial programming (ISP) capability included
  • full-speed programming of serial EEPROM (IIC, Microwire and SPI interface)
  • DIL40 ZIF socket, all MCS51/AVR chips in DIL package up to 40 pins are supported without adapters
  • connection to PC - parallel (printer) port
  • high-speed IEEE 1284 printer-port interface, up to 1MB/sec. transfer rate
  • comfortable and easy to use control program, Windows 95/98/Me/NT/2000/XP compatible
  • free SW update, download from Internet
  • power supply, cable and software included
  • made in Slovakia
  • approved by CE laboratory to meet CE requirements
    CE sign

Available accessories:


  • New generation of Windows 95/98/ME/NT/2000/XP based Elnec specialized programmers. Programmer is capable to support all currently available microcontrollers of the MCS51 series (up to 40 pins) and the AVR microcontrollers (8-40 pins) using parallel and serial algorithms. T51prog has been developed in close cooperation with Atmel W&M., therefore programmer's hardware is focused to support all current and future microcontrollers of Atmel W&M MCS51 family.
  • T51prog is a small, very fast and powerful portable programmer for MCS51 series and Atmel AVR microcontrollers. T51prog also programs serial EEPROM with IIC (24Cxx), Microwire (93Cxx) and SPI (25Cxx) interface types. Using build-in in-circuit serial programming (ISP) connector programmer is able to program MCS51 family microcontrollers and Atmel AVR microcontrollers using serial algorithms.
  • Provides very competitive price with excellent hardware design for reliable programming. Nice "value for money" in this class.
  • Very fast programming due to high-speed FPGA driven hardware and support of IEEE1284 (ECP/EPP) high-speed parallel port. Surely faster than competitors in this category.
  • T51prog interfaces with the IBM PC 486 compatible or higher, portable or desktop personal computers through any standard parallel (printer) port (no special interface card needed). Therefore you can take programmer and move it to another PC without assembly/disassembly of PC.
  • 40 powerful TTL pindrivers provide H/L/pull_up/pull_down and read capability for each pin of socket. Advanced pindrivers incorporate high-quality high-speed circuitry to deliver signals without overshoot or ground bounce for all supported devices. Pin drivers operate down to 1.8V so you'll be ready to program the full range of today's advanced low-voltage devices.
  • The programmer performs device insertion test (wrong device position in socket) and contact check (poor contact pin-to-socket) before it programs each device. These capabilities, supported by signature-byte check help prevent chip damage due to operator error.
  • T51prog programmer performs programming verification at the marginal level of supply voltage, which, obviously, improves programming yield, and guarantees long data retention.
  • Various socket converters are available to handle device in PLCC, SOIC, SSOP, TSSOP, TQFP, QFN (MLF) and other packages.
  • Programmer is driven by an easy-to-use control program with pull-down menus, hot keys and on-line help. Selecting of device is performed by its class, by manufacturer or simply by typing a fragment of vendor name and/or part number.
  • Standard device-related commands (read, blank check, program, verify, erase) are enhanced by some test functions (insertion test, signature-byte check), and some special functions (autoincrement).
  • All known data formats are supported. Automatic file format detection and conversion during loading of file.
  • The rich-featured autoincrement function enables one to assign individual serial numbers to each programmed device - or simply increments a serial number, or the function enables one to read serial numbers or any programmed device identification signatures from a file.
  • The software also provide a many information about programmed device. As a special, the drawing of all available packages are provided. The software provide also explanation of chip labelling (the meaning of prefixes and suffixes at the chips) for each supported chip.
  • The software provide a full information for ISP implementation: Description of ISP connector pins for currently selected chip, recommended target design around in-circuit programmed chip and other necessary information.
  • It is important to remember that support of new devices with compatible GND/VCC/VPP pinout requires only a software update due to the T51prog hardware. With our prompt service you can have a new device added to the list of supported devices within hours! Free software updates are available by download from our WEB site. Keep-Current and AlgOR services, our next step towards customer satisfaction.
    • Keep-Current service means, that Elnec ships the latest version of programmer software and updated user documentation (Keep-Current package) to customer . The Keep-Current service is your hassle-free guarantee that you are achieving the highest quality programming on Elnec programmers, at minimal cost.
    • AlgOR (Algorithm On Request) service gives the user a tool to influence to amount and types of programmed devices as needed.




  • two D/A converters for VCCP and VPP, controllable rise and fall time
  • VCCP range 0..8V/250mA
  • VPP range 0..16V/150mA
  • FPGA based IEEE 1284 slave printer port, up to 1MB/s transfer rate
  • autocalibration
  • selftest capability

ZIF socket, pindriver

  • 40-pin DIL ZIF (Zero Insertion Force) socket accepts both 300/600 mil devices up to 40-pins
  • pindriver: 40 TTL pindrivers, specialized GND/VCC/VPP pindriver for MCS51 and AVR devices
  • spare GND, VCC and VPP driver, which add additional made-by-wire GND/VCC/VPP pin capability for future devices
  • FPGA based TTL driver provides H, L, CLK, pull-up, pull-down on all pindriver pins, level H selectable from 1.8 V up to 5V
  • continuity test: each pin is tested before every programming operation

ISP connector

  • 6-pin male type with missinsertion lock
  • 4 TTL pindrivers, provides H, L, CLK, pull-up, pull-down; level H selectable from 1.8V up to 5V to handle all (low-voltage including) devices.
  • 1x target voltage sense pin
  • Atmel AN AVR910 compatible pinout

Programmer, in ZIF socket

  • microcontrollers MCS51 series: 87Cxxx, 87LVxx, 89Cxxx, 89Sxxx, 89LVxxx, LPC series from Atmel, Atmel W&M, Intel, Philips, SST, Winbond, ... 8-40 pins (*1)
  • microcontrollers Atmel AVR: ATtiny, AT90Sxxx, ATmega series (parallel and serial mode), 8-40 pins (*1)
  • Serial E(E)PROM: 24Cxxx, 24Fxxx, 25Cxxx, 59Cxxx, 85xxx, 93Cxxx series

Programmer, through ISP connector

  • Microcontrollers Atmel: AT89Sxxx, AT90Sxxxx, ATtiny, ATmega series
  • Microcontrollers Philips: LPC series
  • (*1) - suitable adapters are available for non-DIL packages and devices with more than 40 pins.
  • for all supported devices see actual DEVICE LIST

Programming speed

Note: The programming times of the programmer, attached to PC through LPT port, depends a bit on PC speed, LPT port type and operating system free resources. Look at Elnec programmers, tips to increase of programming speed application note for details.

Device Operation Time
AT89C52 programming and verify 15 sec.
T87C5111 programming and verify 14 sec.
Conditions: P4, 2.4 GHz, ECP, Windows XP.

  • Algorithms: only manufacturer approved or certified algorithms are used. Custom algorithms are available at additional cost.

  • Algorithm updates: software updates are available approx. every 2 weeks, free of charge.
  • Main features: revision history, session logging, on-line help, device and algorithm information.

Device operations

  • standard:
    • intelligent device selection by device type, manufacturer or typed fragment of part name
    • blank check, read, verify
    • program
    • erase
    • configuration and security bit program
    • illegal bit test
    • checksum
  • security
    • insertion test
    • contact check
    • ID byte check
  • special
    • auto device serial number increment
    • statistic
    • count-down mode

Buffer operations

  • view/edit, find/replace
  • fill, copy, move, byte swap, word/dword split
  • checksum (byte, word)
  • print

File load/save

  • no download time because programmer is PC controlled
  • automatic file type identification
    Supported file formats
    • unformatted (raw) binary
    • HEX: Intel, Intel EXT, Motorola S-record, MOS, Exormax, Tektronix, ASCII-SPACE-HEX

PC system requirements

  • Common, software related requirements
  • Programmer hardware related requirements:
    • one (parallel) printer port with nothing attached, the IEEE 1284 compatible printer port (ECP/EPP) on PCI bus recommended


  • operating voltage 12..15V DC, max. 0.5A
  • dimensions 137x65x40 mm (5.4x2.6x1.6 inch)
  • weight (without external power adapter) ca. 200g (7.06 oz)
  • temperature 5°C ÷ 40°C (41°F ÷ 104°F)
  • humidity 20%..80%, non condensing

Base configuration package includes

T51prog package
  • T51prog programmer
  • wall plug adapter, 12V DC/500mA, unstabilized
  • connection cable PC-programmer
  • ISP cable
  • diagnostic POD for selftest of the programmer
  • anti-dust cover for ZIF socket
  • user manual (on CD)
  • software
  • registration card
  • transport case

Additional services

  • Keep Current - Elnec sends to user the latest version of programmer software and updated user documentation (Keep-Current package)
  • AlgOR (Algorithms On Request) - add new supported devices on customer request

Programmer price also includes

  • free technical support (hot line)
  • free life-time software update via Internet

The information in this document is subject to change without notice.