PC-3000 Forum

Hi,

I am working on a USB flash drive with a NAND package that has 48 physical pins (24 per side), but the package is significantly wider than a standard TSOP48 and does not fit the normal TSOP48 socket.

I therefore soldered the NAND on the PC-3000 Flash LGA52/TSOP48 replaceable module.

The problem is that PC-3000 immediately reports:

PWR ON Error on channel VCC – Overcurrent detected

I first suspected the orientation, because the package marking / pin 1 indication does not seem to match the triangle/reference on the module.

I tested the chip in both possible orientations, but I get VCC Overcurrent in both cases.

The NAND has exactly 48 visible leads, but because of its unusual width I am not sure whether this is:

a TSOP48 Wide package,
a special TSOP56-derived package with some missing leads,
or another non-standard NAND pinout.

I have attached photos of:

the NAND soldered on the LGA52/TSOP48 module;
the original USB PCB with the NAND removed;
the original NAND footprint;
the current jumper/wiring configuration on the PC-3000 module.

Before trying anything else and risking damage to the NAND, could you please advise:

What package/pinout is this NAND likely to use?
Is the standard LGA52/TSOP48 module suitable for this chip?
Does this type of NAND require a specific VCC/V2/VCCQ jumper configuration?
Which orientation should be used on the module?
Is there a specific PC-3000 Flash adapter or wiring diagram for this type of wide 48-lead NAND?

Any advice would be greatly appreciated.

Thank you.