# Write and/or Erase Section

Erasing or writing is selected according to the command used to begin operation (see ICSP Command Set Summary). The terminologies used in this document, related to erasing/writing to the program memory, are defined in the table below.

Table 1. Programming Terms
Term Definition
Programmed Cell A memory cell at logic ‘0
Erased Cell A memory cell at logic ‘1
Erase Change memory cell from a ‘0’ to a ‘1
Write Change memory cell from a ‘1’ to a ‘0
Program Generic erase and/or write