This slide provides a closer look at the EEPROM and boost converter. The L092 requires a non-volatile SPI memory external to the device to retain the firmware for the L092. Upon startup, the L092 would boost the SPI memory IC and retrieve the firmware for its operation. However, most of the SPI memory operates with 3 V logic. Due to the board operating natively at 0.9 V, a special interface is required to power the SPI memory, as well as to enable the communication from a 3 V device to a 1.5 V device. This is where the boost converter comes into play. The MSP430L092 uses the pin 1.2 to drive the PWM signal to drive a boost converter supplying the 3 V power into the SPI memory. Additionally, the SPI communication translation from 3 V down to 1.5 V is also required between the L092 and SPI memory interface. It is called the Adaptation Network. Additionally, and also optionally, is the intelligent control from MSP430L092. It reuses the JTAG pins of the L092 to reconfigure it and use it to control both the L092, as well as the EEPROM.