Flash memory express erase and program

摘要

A mechanism for express storage of sensor data in response to an indication of a power fluctuation, power brownout or blackout that can affect operation of a microcontroller is provided. Embodiments provide a flash memory having memory space allocated to express storage of the sensor data, and a protocol machine configured to provide the desired information to reserved registers associated with express program/erase operations accessing the allocated memory space.

主权项

1. A memory system comprising:
a flash memory array configured to store data; a program/erase controller coupled to the flash memory array and configured to perform a plurality of operations in conjunction with storing data in the flash memory array; and a protocol machine coupled to the program/erase controller and configured to interrupt an operation performed by the program/erase controller in response to a vehicular event, and
instruct the program/erase controller to bypass one or more of the plurality of operations while storing selected data in the flash memory array, wherein
the vehicular event comprises an indication of an event in which insufficient power can be applied to the memory system for normal operation subsequent to the vehicular event; andone or more reserve registers, coupled to the program/erase controller and the protocol machine, and configured to store the selected data prior to the selected data being stored in the flash memory array in response to the vehicular event.