STK12C68 Simtek, STK12C68 Datasheet - Page 2

• Manufacturer Part Number: STK12C68
• Description: 8Kx8 AutoStore nvSRAM
• Manufacturer: Simtek

STK12C68 (SMD5962-94599)
Document Control #ML0008 Rev 0.7
Packages
Pin Descriptions
A
DQ
E
W
G
V
HSB
V
V
12
CCX
CAP
SS
Pin Name
7
-A
February 2007
-DQ
0
0
VCAP
Input
I/O
Input
Input
Input
Power Supply
I/O
Power Supply
Power Supply
DQ0
DQ2
DQ1
VSS
A12
A6
A5
A4
A2
A7
A3
A1
A0
1
10
12
2
3
4
11
13
14
5
6
7
8
9
28-pin SOIC
28-pin DIP
I/O
28
15
27
26
25
24
23
20
19
18
17
16
22
21
VCCX
DQ7
DQ6
HSB
A8
A11
A10
A9
DQ5
DQ4
DQ3
W
G
E
Address: The 13 address inputs select one of 8,192 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: 5.0V, +10%, -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
2
Description
28-pin LCC