Enhanced/Dual Powered

Willem EPROM Programmer

User Guide  

 

Willem Package Item Image

Supported IC List

Installation & Configuration

Jumper Configuraton

Self Test Function

Software Interface

FLASH Chip Programming

EPROM Chip Programming

EEPROM Chip Programming

ATMEL Chip Programming

PIC Chip Programming

AVR Chip Programming

ATMEL AT89 Adapter

ATMEL PLCC44 Adapter

TSOP48 Adapter

 

Willem Package Item Image  

Main Board / Cables

Main Board PCB3.5

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Main Board PCB4E

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Main Board PCB5.0

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Main Board PCB5.5C

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Parallel Data Cable (Printer extension cable, with male-female 25 pin connector, and pin to pin through)

A-A type USB cable(for power)

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Optional Items:

ATMEL 89 Adapter

ATMEL PLCC 44 Adapter

TSOP 48 Adapter

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FWH/HUB PLCC32Adapter

PLCC32 Adapter

SOIC Adapter(Simplified)

On-Board

On-Board

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AC or DC Power Adapter (9V or 12V, 200mA)

SOIC Adapter(Professional)

 

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Supported Device List

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: Offers pre-owned units inspected by qualified suppliers. Most "Renewed" phones come with a 90-day guarantee , while "Premium" tier products can include a full year of coverage. In 2026, prices for a 16GB–64GB model typically

The iPhone 5s remains a popular choice for collectors, budget seekers, or those looking for a compact secondary device. As of , finding one in good condition requires looking at dedicated refurbished marketplaces rather than standard retail stores, as Apple no longer stocks this model. Best Places to Buy a Used iPhone 5s

: A top choice for "certified" refurbished units. They vet sellers rigorously and provide a 1-year limited warranty and a 30-day return policy.

: The largest inventory source. To stay safe, filter for "eBay Refurbished" listings, which often include free shipping, free returns, and a 1-year warranty via SquareTrade. Prices here can be as low as $29–$45 for functional units.

 

Hardware Installation & Configuration

Installation Steps
  

  • Check the parallel printer port setting in the bios, it should be EPP or Normal.
  • Check there are any active resident programs that use the printer port, such as TWAIN drivers. You may have to remove it.
  • Connect one end of the 25 pin SubD parallel cable  to PC printer port
  • Connect the other end  of parallel cable to 25 Pins port of the programmer
  • Connect USB power cable or AC adaptor (Note: if you are working on the EPROM programming. You may need use a AC adaptor, so that you can get Vcc 5.6V and 6.2V when doing programming)
  • The yellow power normal indicator of the programmer should light up, then the programmer power supply is normal.
  • Run the software
  • Select devices type
  • Click the Willem in toolbar to change to PCB3
  • Set the DIP switch based on the displayed pattern.

          (Note: the LPT port of PC MUST set to ECP or ECP+EPP during BIOS setup. To enter the BIOS setting mode, you need press "Del" key or "F1" key during the computer selftest, which is the moment of computer just power up.)

 

Software Version To Use

The software can be download from download.mcumall.com  

There are board hardware selection jumper on the board. When set the jumper to PCB3B, then user have to use 0.97ja and before version software.

If the board selection set to PCB3.5, PCB5.0, PCB5.5C, then the software 0.98D6 should be used.

 

          The software interface:

 

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Hardware Check

After start the program, click test hardwar under Help menu. If the connection and power supply is normal, then appears: "Hardware present"   Otherwise check if the programmer connects well with PC, or power supply is normal.

 

Jumper Configuration

 

PCB3.5/PCB4E

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(Two PLCC32 adapter is not applied on the PCB4E)

 

PCB5.0

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PCB5.5C

 

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Note: the Vcc setting jumper only has effect when you are using AC adaptor as power source. For the USB power only 5V Vcc is available.

For the PCB5.5C, set DIP steps:

1. press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF.

2. press DIP Bit shift button to shift the DIP bit position to where need to set. And then press DIP Set button twice to check current DIP bit position. Then set it again for ON or OFF.

3. Repeat those steps till all DIP bit ae set  same as software indicated.

For PCB5.5C voltage and Special chip selection:

1. Put back the safety jumper.

2. Press the voltage button and hold for 1 second, the voltage LED should move to next. Repeat till desired voltage LED light up.

3. Press the chip selection button and hold for 1 second, the chip LED should move to next. Repeat till desired LED light up.

4. Remove the safety jumper to lock the selected voltage and chip selection

 

DIP Switch (PCB3.5, PCB5.0)

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When programming one chip,  follow the program prompt to set DIP switch . 

 

 

Self Test Function 

Buying a device this old comes with risks. Ensure you verify the following: How to Buy a Used iPhone | PCMag

: Highly recommended for its strict listing requirements. Every device must be fully functional, and sellers must provide photos of the actual phone next to a unique verification code. In 2026, prices for a 16GB–64GB model typically range from $32 to $41 .

: Known for its 30-point inspection process. While inventory for older models like the 5s can be limited, it is a "sure thing" for those who want to avoid the risks of individual-seller marketplaces. What to Check Before You Buy

: Offers pre-owned units inspected by qualified suppliers. Most "Renewed" phones come with a 90-day guarantee , while "Premium" tier products can include a full year of coverage.

The iPhone 5s remains a popular choice for collectors, budget seekers, or those looking for a compact secondary device. As of , finding one in good condition requires looking at dedicated refurbished marketplaces rather than standard retail stores, as Apple no longer stocks this model. Best Places to Buy a Used iPhone 5s

: A top choice for "certified" refurbished units. They vet sellers rigorously and provide a 1-year limited warranty and a 30-day return policy.

: The largest inventory source. To stay safe, filter for "eBay Refurbished" listings, which often include free shipping, free returns, and a 1-year warranty via SquareTrade. Prices here can be as low as $29–$45 for functional units.