Vizio L37, Service Manual

Page: 55 / 133

CONFIDENTIAL – DO NOT COPY Page 8- 19
File No. SG-0176
After the system writes the auto select command sequence, the device enters the auto
select mode. The system can then read auto select codes from the internal register (which
is separate from the memory array) on Q7-Q0. Standard read cycle timings apply in this
mode. Refer to the Auto select Mode and Auto select Command Sequence section for
more information. ICC2 in the DC Characteristics table represents the active current
specification for the write mode. The "AC Characteristics" section contains timing
specification table and timing diagrams for write operations.
Figure 1
3. READ/RESET COMMAND
The read or reset operation is initiated by writing the read/reset command sequence into
the command register. Microprocessor read cycles retrieve array data. The device remains
enabled for reads until the command register contents are altered. If program-fail or
erase-fail happen, the write of F0H will reset the device to abort the operation. A valid
command must then be written to place the device in the desired state.