Preliminary
STK14EC16
PREVENTING AUTOSTORE
The AutoStore function can be disabled by initiating
an AutoStore Disable sequence. A sequence of
READ operations is performed in a manner similar
to the software STORE initiation. To initiate the
AutoStore Disable sequence, the following
sequence of E controlled or G controlled READ
operations must be performed:
1 Read Address 0x4E38 Valid READ
2 Read Address 0xB1C7 Valid READ
3 Read Address 0x83E0 Valid READ
4 Read Address 0x7C1F Valid READ
5 Read Address 0x703F Valid READ
6 Read Address 0x8B45 AutoStore Disable
The AutoStore can be re-enabled by initiating an
AutoStore Enable sequence. A sequence of READ
operations is performed in a manner similar to the
software RECALL initiation. To initiate the
AutoStore Enable sequence, the following
sequence of E controlled or G controlled READ
operations must be performed:
Figure 4 - Current vs Cycle Time
1 Read Address 0x4E38 Valid READ
2 Read Address 0xB1C7 Valid READ
3 Read Address 0x83E0 Valid READ
4 Read Address 0x7C1F Valid READ
5 Read Address 0x703F Valid READ
6 Read Address 0x4B46 AutoStore Enable
If the AutoStore function is disabled or re-enabled,
a manual STORE operation (Hardware or Soft-
ware) needs to be issued to save the AutoStore
state through subsequent power down cycles. The
part comes from the factory with AutoStore
enabled, but best design practice is to set the
enable or disable state during each power-up
sequence and not depend on this factory default
condition. Simtek recommends users configure the
part completely for the specific application.
15
Simtek Confidential
Rev 1.1
Document Control #ML0061
Jan, 2008
SIMTEK [ SIMTEK CORPORATION ]
