STK14CA8 Simtek, STK14CA8 Datasheet - Page 14

• Manufacturer Part Number: STK14CA8
• Description: 128Kx8 Autostore nvSRAM
• Manufacturer: Simtek

STK14CA8
Document Control #ML0022 Rev 1.5
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:
The AutoStore can be re-enabled by initiating an
AutoStore Enable sequence. A sequence of READ
ORDERING INFORMATION
STK14CA8-R F 45 I TR
1 Read Address
2 Read Address
3 Read Address
4 Read Address
5 Read Address
6 Read Address
February 2007
0x4E38
0xB1C7 Valid READ
0x83E0
0x7C1F Valid READ
0x703F
0x8B45
Valid READ
Valid READ
Valid READ
AutoStore Disable
Packing Option
Temperature Range
Access Time
Lead Finish
Package
Blank=Tube
TR=Tape and Reel
Blank=Commercial (0 to +70 C)
I= Industrial (-45 to +85 C)
25=25 ns
35=35 ns
45=45 ns
F=100% Sn (Matte Tin) RoHS Compliant
N=Plastic 32-pin 300 mil SOIC (50 mil pitch)
R=Plastic 48-pin 300 mil SSOP (25 mil pitch)
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operations is performed in a manner similar to the
software RECALL initiation. To initiate the AutoStore
Enable sequence, the following sequence of E con-
trolled or G controlled READ operations must be per-
formed:
If the AutoStore function is disabled or re-enabled, a
manual STORE operation (Hardware or Software)
needs to be issued to save the AutoStore state
through subsequent power down cycles. The part
comes from the factory with AutoStore enabled.
1 Read Address
2 Read Address
3 Read Address
4 Read Address
5 Read Address
6 Read Address
0x4E38
0xB1C7 Valid READ
0x83E0
0x7C1F Valid READ
0x703F
0x4B46
Valid READ
Valid READ
Valid READ
AutoStore Enable