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STK12C68-SF25 Arkusz danych(PDF) 2 Page - Simtek Corporation

Numer części STK12C68-SF25
Szczegółowy opis  8Kx8 AutoStore nvSRAM
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Producent  SIMTEK [Simtek Corporation]
Strona internetowa  http://www.simtek.com
Logo SIMTEK - Simtek Corporation

STK12C68-SF25 Arkusz danych(HTML) 2 Page - Simtek Corporation

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February 2007
Document Control #ML0008 Rev 0.7
STK12C68 (SMD5962-94599)
Packages
Pin Descriptions
A0
A1
A2
A3
A4
A5
E
DQ0
DQ1
VCCX
VCAP
DQ2
DQ3
W
A6
A7
VSS
G
DQ7
DQ6
DQ5
DQ4
HSB
A12
A11
A10
A9
28
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
A8
28-pin SOIC
28-pin DIP
28-pin LCC
Pin Name
I/O
Description
A12-A0
Input
Address: The 13 address inputs select one of 8,192 bytes in the nvSRAM array
DQ7-DQ0
I/O
Data: Bi-directional 8-bit data bus for accessing the nvSRAM
E
Input
Chip Enable: The active low E input selects the device
W
Input
Write Enable: The active low W enables data on the DQ pins to be written to the address
location latched by the falling edge of E
G
Input
Output Enable: The active low G input enables the data output buffers during read cycles.
De-asserting G high caused the DQ pins to tri-state.
VCCX
Power Supply
Power: 5.0V, +10%, -10%
HSB
I/O
Hardware Store Busy: When low this output indicates a Store is in progress. When pulled
low external to the chip, it will initiate a nonvolatile STORE operation. A weak pull up resistor
keeps this pin high if not connected. (Connection Optional).
VCAP
Power Supply
AutoStore Capacitor: Supplies power to nvSRAM during power loss to store data from
SRAM to nonvolatile storage elements.
VSS
Power Supply
Ground


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