STK12C68-P35I Cypress Semiconductor Corp, STK12C68-P35I Datasheet - Page 2

• Manufacturer Part Number: STK12C68-P35I
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK12C68-P35I

• Word Size: 8b
• Organization: 8Kx8
• Density: 64Kb
• Interface Type: Parallel
• Access Time (max): 35ns
• Operating Supply Voltage (typ): 5V
• Package Type: PDIP
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -40C to 85C
• Pin Count: 28
• Mounting: Through Hole
• Supply Current: 75mA
• Lead Free Status / Rohs Status: Not Compliant

STK12C68, STK12C68-5 (SMD5962-94599)
Document Control #ML0008 Rev 2.0
Packages
Pin Descriptions
A
DQ
E
W
G
V
HSB
V
V
12
CC
CAP
SS
Pin Name
-A
7
June, 2008
-DQ
0
0
D Q
V
D Q
D Q
V
A
C A P
A
A
A
A
A
A
A
A
Input
I/O
Input
Input
Input
Power Supply
I/O
Power Supply
Power Supply
S S
1 2
7
6
3
2
1
5
4
0
0
1
2
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
28-pin SOIC
28-pin DIP
I/O
( T O P )
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
2 8
2 7
2 6
2 5
H S B
V
W
A
A
D Q
D Q
D Q
D Q
D Q
A
A
G
E
C C
1 1
1 0
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%
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
8
9
7
6
5
4
3
2
DQ
DQ
A
A
A
A
A
A
A
6
3
5
4
2
1
0
0
1
Description
28-pin LCC
(TOP)
A
DQ
HSB
A
A
A
DQ
G
E
10
8
9
11
7
6