The KT142C voice chip has a built - in storage capacity of 320KB. For details, please refer to Section 4.3 of the chip manual, as shown in the diagram below.
Here is a detailed explanation of why it is 320KB:
The KT142C chip actually has 512KB of internal space, which is allocated as follows:
- A part is used to store program firmware.
- A part serves as memory storage space.
- The remaining space is for users to freely use for voice storage, and no additional space can be freed up.
If the 320KB capacity does not meet your requirements, the only option is to adopt an external flash solution. In this case, the available space depends entirely on the capacity of the external flash chip.
Advantages: The storage capacity can be freely expanded.
Disadvantages: An additional flash chip is required, increasing the Bill of Materials (BOM) cost. This is the only drawback.
For more details, please review the "KT142F" chip solution.
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