What happens when a power of only 1.2 V is supplied to a Traveo™ CY9D560 series MCU without the 5 V?
The internal logic of the MCU may be damaged when a power of only 1.2 V is supplied. Be sure to supply 1.2 V and 5 V according to the power-ON/-OFF sequence. For details of the power-ON/-OFF sequence, see the "Power-on Conditions" sections in the device datasheet.
The prefix MB of the product has been changed to CY. For instance, MB9D56X has been changed to CY9D56X.