This adaptor is used to program Holtek 8-bit MCU with 20-pin QFN (Quad Flat No-lead) dimension 3mm x 3mm x 0.75mm package type. It must be used together with the Holtek e-WriterPro programmer. Note that 20-pin QFN package has three kinds of dimensions: 3mm x 3mm x 0.75mm, 4mm x 4mm x 0.75mm and 5mm x 5mm x 0.75mm. Please make sure the dimension before purchasing adaptor.
|20-pin QFN package||Adaptor|
|Dimension 3mm x 3mm x 0.75mm||Adaptor ESKT20QFN3C|
|Dimension 4mm x 4mm x 0.75mm||Adaptor ESKT20QFN4A|
|Dimension 5mm x 5mm x 0.75mm||Adaptor ESKT20QFN5A|
To use this adaptor, insert it into the slot on the e-WriterPro. When placing IC into this adaptor, keep the IC pin1 to align with pin1 of this adaptor (marked on the PCB).
The adapter is a consumable. The suggested programming times is 5,000 times. When the adaptor has programmed over 5,000 times, the e-WriterPro will display a warning message. It is recommended to replace a new adaptor to ensure successful programming.