STK14CA8 Simtek, STK14CA8 Datasheet - Page 2

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

STK14CA8
Document Control #ML0022 Rev 1.5
PIN DESCRIPTIONS
A
DQ
E
W
G
V
HSB
V
V
(Blank)
16
CC
CAP
SS
Pin Name
7
-A
February 2007
-DQ
0
0
V
DQ
DQ
DQ
V
A
A
A
CAP
A
SS
A
A
A
A
A
A
A
14
12
16
3
2
1
0
5
4
7
6
0
1
2
48 Pin SSOP
Input
I/O
Input
Input
Input
Power Supply
I/O
Power Supply
Power Supply
No Connect
10
11
13
14
18
19
20
21
22
23
24
1
4
12
15
16
17
2
3
5
6
7
8
9
I/O
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
HSB
W
DQ
V
A
A
A
A
V
V
A
DQ
DQ
DQ
DQ
G
A
E
CC
SS
15
13
8
11
CC
9
10
6
7
5
4
3
Address: The 17 address inputs select one of 131,072 bytes in the nvSRAM array
Data: Bi-directional 8-bit data bus for accessing the nvSRAM
Chip Enable: The active low E input selects the device
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
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.
Power: 3.0V, +20%, -10%
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).
Autostore Capacitor: Supplies power to nvSRAM during power loss to store data from
SRAM to nonvolatile storage elements.
Ground
Unlabeled pins have no internal connections.
PACKAGES
2
V
DQ
DQ
DQ
V
A
A
A
CAP
A
A
A
A
A
A
A
A
SS
Relative PCB area usage.
See website for detailed package
size specifications.
16
14
12
5
4
3
2
1
0
7
6
0
1
2
10
11
12
13
14
1
2
3
4
5
6
7
8
9
15
16
32 Pin SOIC
Description
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
HSB
W
V
A
A
DQ
DQ
DQ
DQ
DQ
A
A
A
A
G
E
CC
15
13
8
9
11
10
3
7
6
5
4