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PRESTO - fast and flexible
USB programmer

PRESTO is a powerful, very fast and cost effective In-Circuit Serial programmer for a wide range of popular components - microcontrollers, serial EEPROM and Flash memory chips, CPLDs and others. PRESTO operates on a USB port and requires no external power supply.


  • Wide range of supported devices:
    Microcontrollers by Microchip, Atmel, Texas Instruments, Cypress and Cyan, ARM-based MCUs, serial EEPROM & Flash memories by various manufacturers, FPGA and CPLD devices by Xilinx, Altera and Lattice, ...
  • Very fast operation
  • Controlled and powered by USB
  • Target application voltage 3 to 5 V
  • Overcurrent and overvoltage protection
  • GO button
  • RoHS compliant
  • New enclosure since April 2010
  • Advanced software for Windows XP/Vista/7/8/8.1/10/11 (both 32 & 64 bit)

➜ Detailed comparison of PRESTO and FORTE programmers


➜ Download

➜ Prices

➜ Images

➜ Accessories

➜ Supported Devices

More information about PRESTO

High speed

PRESTO is optimized for high speed, for example it programs and verifies a full PIC18F8720 in 6 seconds! (3 seconds for programming and 3 seconds for verification). Complete eCOG1 in less than 3 seconds.

Many devices supported

Hundreds of devices are supported by the UP software and the list is growing continuously. Moreover, many other parts can be programmed using JTAG or other software for PRESTO. For detailed information, visit the page Supported Devices.

Enhanced programming interface

In-Circuit Serial Programming (ICSP) or In-System Programming (ISP) is a very beneficial and frequently used MCU feature. PRESTO directly supports this function using a dedicated connector and an included cable.

The target application device can be either powered by PRESTO (5 V nominally) or powered by an application within a voltage range of 3 to 5 V (with a ±10% tolerance, i.e. 2.7 to 5.5 V). The voltage range can be extended by two special headers - HPR3V3 (for 3.3 V output) and HPR1V2 (for 1.2 to 3.3 V support).

Overcurrent limitation on target supply and programming voltages remarkably reduces the risk of damaging parts because of operator error. Target supply overvoltage detection is also implemented.

Advanced software

The program UP supports PRESTO as well as other ASIX' programmers. It offers many advanced functions like projects, command line control, Windows message control, workspace setup including user keyboard shortcut definitions, serial number generation by various methods, etc. UP works in Windows XP/Vista/7/8/8.1/10/11 (32 and 64 bit).

Devices with JTAG interface and eCOG microcontrollers are supported by dedicated programs JTAG SVF Player and eCOG Programmer, respectively. Microcontrollers with 32-bit ARM core are supported by OpenOCD and some of them also by easy-to-use Armine application. The advanced control of the PRESTO programmer can be made using a PRESTO .DLL Library.

Software upgrades are freely available for all users on the Internet. They contain new device support, new functions and algorithm updates if required.

Comfortable user interface

GO button allows the user to comfortably start the device programming, without the need for a PC keyboard or a mouse. LEDs indicate programmer status - green LED ON-LINE signals a working USB connection and yellow LED ACTIVE indicates that PRESTO is operating (programming, reading, ...).

PRESTO is powered by the USB bus, so there is no need for any additional supply adaptor.

PRESTO is small, lightweight and compact.

Since spring 2012 there is a new enclosure and label colour

To achieve a consistent colour scheme for our new products, we changed the PRESTO enclosure colour from light gray to light beige, the colour of the plastic reduction at the ICSP connector from dark grey to orange and the product name from red to orange. Of course, dimensions and weight (as well as the electronics) remained unchanged.

PRESTO is delivered in a new enclosure since April 2010

Compare the old and the new PRESTO version:

PRESTO: old and new - top view PRESTO: old and new - ISP connector view PRESTO: old and new - USB connector view

Click to open larger images. For more pictures goto to the ➜ PRESTO image gallery.

Related products

HPR1V2 - 1.2 to 3.3 V Level Shifter for PRESTO

HPR3V3 - 3.3 V Level Shifter for PRESTO

HPRAVR - PRESTO to AVR Connector Adapter

ICSPCAB8 - an additional/replacement in-system programming cable

FORTE - extremely fast and flexible High-Speed USB programmer

ISP2ZIF - a universal adapter with 40-pin DIP Zero-Insertion-Force socket

For more information do not hesitate to contact us!

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