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STK14EX8-TF45 Fiches technique(PDF) 2 Page - Simtek Corporation

No de pièce STK14EX8-TF45
Description  512Kx8 Autostore nvSRAM
Download  18 Pages
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Fabricant  SIMTEK [Simtek Corporation]
Site Internet  http://www.simtek.com
Logo SIMTEK - Simtek Corporation

STK14EX8-TF45 Fiches technique(HTML) 2 Page - Simtek Corporation

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Simtek Confidential
April, 2007
Document Control #ML0060 Rev 1.0
STK14EC8
Preliminary
PIN DESCRIPTIONS
Pin Name
I/O
Description
A18-A0
Input
Address: The 19 address inputs select one of 524,288 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.
VCC
Power Supply
Power: 3.0V, +20%, -10%
HSB
I/O
Hardware Store Busy: When low this output indicates a Store is in progress (also low during
power up while busy). 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 the nvSRAM during a power loss to store data from
SRAM to nonvolatile storage elements.
VSS
Power Supply
Ground
NC
No Connect
This pin is not connected to the die. (Do not connect in design; reserved for future use)
44-Pin TSOP-II
VSS
A0
A1
A2
A3
A4
A5
DQ0
DQ1
VCC
VCAP
DQ2
DQ3
A6
A7
A8
NC
NC
NC
A18
A17
A16
A15
A14
A13
G
DQ7
DQ6
VSS
VCC
DQ5
DQ4
HSB
A12
A11
A9
NC
NC
NC
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
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
512K x8
NC
NC
A10
W
E
(See mechanical drawing on Page 18)


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