This subsystem demonstrates how to implement Electrically Erasable Programmable Read-Only Memory (EEPROM) emulation (Type B) in the application. EEPROM emulation allows a device to emulate EEPROM in Flash memory, and make an equivalent durability similar to EEPROM. The following features are available using Flash memory:

• Data retention after unexpected power loss
• Flexible structure for different applications
• User-configured erase operation

Download the code for this example.

There are two types of EEPROM emulation libraries for MSPM0. Type A is to store one large block of data (64 bytes, 128 bytes or 256 bytes) with a Static Random Access Memory (SRAM) buffer. See the EEPROM Emulation Type A Design application note for details of the library. Type B is to store many small data items (16bit or 32bit) with item identifiers. See also the EEPROM Emulation Type B Design application note for details of the library.

This subsystem shows the usage of Type B. For the Type A subsystem, see the Emulate EEPROM With Flash (Type A) subsystem design.

Figure 1-1 shows a functional diagram of this subsystem.

This application requires Flash.

Based on the requirements in Table 2-1, this example is compatible with the devices in Table 3-1. The corresponding EVM can be used for prototyping.