TSOP48 Extra Power Adapter for NAND Data Recovery

TSOP48 Extra Power Adapter for NAND Data Recovery


In NAND data recovery, the TSOP48 is probably the most popular NAND chip package, making it possible to encounter various differences between chips. In some cases, adjusting the voltage on Vcc and VccQ can assist in reading the NAND chip.

However, certain SanDisk or Toshiba TSOP48 chips tend to overheat during reading, reaching temperatures above 50°C. In such instances, even the NAND ID and bitmap may not be read properly.


Chip in Standard adapter:

   

Picture 01: Incorrect Chip ID



    Picture 02: Improper bitmap



    Picture 03: ECC map


In these situations, it is advisable to inspect the device's PCB carefully.

Understanding TSOP48 Pinout
To begin, it is crucial to understand the pin order of TSOP48:

    On the right side of the chip, pins are counted from top to bottom.
    On the left side, they are counted from bottom to top.

Identifying pin 1 is usually straightforward, as it is typically marked with an arrow or dot on the PCB.

   

Picture 04: PCB  TSOP48 and pad order


Checking Power Connections
With this knowledge, it is necessary to check the connections between pads 1, 12 (Vcc), and 24. If these pads are connected, it indicates that the chip requires additional power. For such devices, we have developed a new type of TSOP48 adapter.

   

Picture 05: Pads to check for connection



    Picture 06: TSOP48 Extra Power Adapter




VSP (Vendor Specific Protocol) Configuration
Our software also offers an option to use VSP (Vendor Specific Protocol).

   

Picture 07: VSP signals in reader configuration


Enabling these checkboxes can sometimes enhance reading quality. Determining which VSP signals to use requires further inspection of the PCB.

To begin, locate VccQ (1.8V), which is present on pads 34 and 39. Afterward, verify the connection between each VSP signal and VccQ.

For instance, if VSP1 is connected to VccQ, it is necessary to enable the VSP1 flag in the reader configuration.

   

Picture 08: VccQ signal and VSP signals on the PCB


Most of these devices function more effectively with Vcc at 3.3V and VccQ at 1.8V. The appropriate VSP flag to use is determined by the connections on the PCB.

With these procedures and the proper TSOP48 Extra Power adapter, it is possible to obtain the correct ID. Additionally, the bitmap quality is significantly improved, and the chip’s temperature during reading is reduced to around 30°C.

   

Picture 09: Correct ID



    Picture 10: Proper bitmap
   


Picture 11: ECC map


Conclusions:
The new TSOP48 Extra Power adapter offers a reliable solution for handling NAND chips that require additional power. By ensuring proper power connections and optimizing VSP configurations, it significantly enhances reading quality and stability. This adapter minimizes overheating issues and improves bitmap accuracy, making it an essential tool for effective NAND data recovery.

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