Patent ID: 8351268

Claim:
A wireless communications device, said wireless communications device comprising: a flash memory comprising: a first current-voltage conversion circuit connected to a core cell provided in a nonvolatile memory cell array; a second current-voltage conversion circuit connected to a reference cell through a reference cell data line, wherein the second current-voltage conversion circuit comprises an average circuit operable to average outputs from multiple reference cells; a sense amplifier sensing an output from the first current-voltage conversion circuit and an output from the second current-voltage conversion circuit; a compare circuit comparing a voltage level at the reference cell data line with a predefined voltage level; and a charging circuit charging the reference cell data line, if the voltage level at the reference cell data line is lower than the predefined voltage level during pre-charging the reference cell data line; a processor; a communications component; a transmitter; a receiver; and an antenna connected to the transmitter circuit and the receiver circuit.