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Dediprog Technology Co Ltd

SF600-ISO-Board-2

SF600-ISO-Board-2

SPI programmer isolation board preventing ground loop damage

SKU: SF600-ISO-BOARD-2

Regular price
£75.10 inc VAT
£62.70 exc VAT
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£62.70 exc VAT
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Key Features

Prevents ground loop damage to equipment
Reduces motherboard boot interference
Compatible with SF600 and SF600 Plus
Robust signal separation improves reliability
Easy in-line installation
Essential for multi-instrument test benches
Maintains correct pin mapping

Overview

The Dediprog SF600-ISO-Board-2 is an essential accessory designed for the SF600 and SF600 Plus series to protect against ground loop damage and solve boot interference issues caused by direct programmer attachment to motherboards during SPI Flash memory programming. Ground loops can destroy both programmers and target boards when potential differences exist between equipment grounds, making this isolator critical in engineering environments where cable capacitance, noise, and multiple power sources create hazardous conditions. This board fits seamlessly between the ISP cable and the programmer, breaking ground loop paths whilst preserving signal integrity and supporting error-free firmware updates. Compatible with all standard SF600 and SF600 Plus setups, this product is part of Dediprog's comprehensive ecosystem for professional flash programming and is favoured by engineers handling sensitive boards, long test cables, or multi-instrument benches. Discover the full range of Dediprog programmer accessories at https://thedebugstore.com/products/dediprog-accessories-sf600-series and SF600 product family at https://thedebugstore.com/products/dediprog-sf600-plus-programmer. Use with genuine cables and programmer units for best results.

Equipment Protection

Prevents costly damage to programmers and targets from ground loops in complex test setups with multiple power sources.

Boot Stability

Ensures motherboards boot correctly during SPI programming in noisy lab environments and long cable configurations.

Error-Free Programming

Reduces the incidence of failed or corrupt firmware updates by protecting against interference and hazardous currents.

Isolation Board for SF600/SF600 Plus

Front view of SF600-ISO-Board-2

The SF600-ISO-Board-2 is designed to minimise cable-based interference and protect against ground loop damage when Dediprog SF600 and SF600 Plus programmers are directly attached to a target motherboard for SPI Flash in-system programming. This robust isolator sits between the programmer and the device cable, maintaining reliable motherboard boot operation and preventing costly damage to both programmer and target board in high-noise engineering test setups.

Ground Loop Protection

Ground loops occur when multiple ground paths exist between programmer and target, creating circulating currents that can damage sensitive components. The SF600-ISO-Board-2 breaks these hazardous current paths whilst maintaining signal integrity, safeguarding expensive equipment in industrial and lab environments where multiple power supplies and test instruments share common grounds.

Pinout and Wiring Quick-Start

Signal Name Pin Connection
VCC 1 Target Board Power
SPI_CS 2 Chip Select
SPI_CLK 3 SPI Clock
SPI_MOSI 4 Data In
SPI_MISO 5 Data Out
GND 6 Ground (Isolated)
 To use, insert the isolation board between the SF600/SF600 Plus programmer and your target system's cable. Ground isolation prevents damage from potential differences between programmer and target grounds. 

Application Example

Wiring Quick-Start diagram showing ground isolation

Fit SF600-ISO-Board-2 between the programmer and your target for improved stability when flashing SPI memories, reducing risk of failed boots caused by signal reflections or ground loops common in long cable runs and multi-instrument test benches.

Ready-to-Run Code

 No special configuration required. Use your existing Dediprog SF600/SF600 Plus utility as normal. The isolation board provides transparent protection. 

Frequently Asked Questions

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  • Are replacement cables required?

    No. Use your standard Dediprog ISP cables with the isolation board inserted inline.

  • What symptoms indicate I need an isolation board?

    Failed boots, intermittent programming errors, or visible damage to programmer or target ground pins suggest ground loop issues.

  • Does it protect against voltage spikes and ESD?

    Whilst it mitigates ground loop currents and transient interference, it does not substitute dedicated voltage or ESD protection circuits.

  • Can I use the SF600-ISO-Board-2 with non-Dediprog programmers?

    This accessory is optimised for Dediprog SF600 series. Compatibility with other brands is not guaranteed.

  • Will this board solve issues with long SPI flash cables?

    Yes, it is engineered specifically for setups using longer cables which may otherwise destabilise target boards or create ground loop risks.

  • Is extra configuration required in the Dediprog utility?

    No, simply use your current software and workflow—the isolation operates transparently.

  • When are ground loops most likely to occur?

    Ground loops commonly occur in test benches with multiple instruments, power supplies, or when programmer and target have separate mains connections.

  • How does the isolation board prevent ground loop damage?

    It breaks circulating current paths between programmer and target grounds whilst maintaining signal integrity, preventing damage from potential differences.

  • Does the SF600-ISO-Board-2 fit both SF600 and SF600 Plus programmers?

    Yes, it is compatible with both Dediprog SF600 and SF600 Plus models.

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