TC58NVG1S3ETAI0
2012-09-01C
54
APPLICATION NOTES AND COMMENTS
(1) Power-on/off sequence:
The timing sequence shown in the figure below is necessary for the power-on/off sequence.
The device internal initialization starts after the power supply reaches an appropriate level in the power on
sequence. During the initialization the device Ready/Busy signal indicates the Busy state as shown in the
figure below. In this time period, the acceptable commands are FFh or 70h.
The
WP signal is useful for protecting against data corruption at power-on/off.
(2) Power-on Reset
The following sequence is necessary because some input signals may not be stable at power-on.
(3) Prohibition of unspecified commands
The operation commands are listed in Table 3. Input of a command other than those specified in Table 3 is
prohibited. Stored data may be corrupted if an unknown command is entered during the command cycle.
(4) Restriction of commands while in the Busy state
During the Busy state, do not input any command except 70h(71h) and FFh.
V
IL
Operation
0 V
V
CC
2.7 V
2.5V
V
IL
Don’t
care
Don’t
care
V
IH
CE
, WE , RE
WP
CLE, ALE
Invalid
Don’t
care
Ready/Busy
1 ms max
100 μs max
FF
Reset
Power on
