STK12C68-5L55M Cypress Semiconductor Corp, STK12C68-5L55M Datasheet - Page 3

• Manufacturer Part Number: STK12C68-5L55M
• Description: STK12C68-5L55M
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK12C68-5L55M

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 64K (8K x 8)
• Speed: 35ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 28-LCC
• Word Size: 8b
• Organization: 8Kx8
• Density: 64Kb
• Interface Type: Parallel
• Access Time (max): 55ns
• Operating Supply Voltage (typ): 5V
• Package Type: CLCC
• Operating Temperature Classification: Military
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -55C to 125C
• Pin Count: 28
• Mounting: Surface Mount
• Supply Current: 75mA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pin Configurations
Pin Definitions
Document Number: 001-51027 Rev. *A
Pin Name
DQ
A
V
HSB
0
V
V
WE
CE
OE
0
–A
CAP
SS
CC
-DQ
12
7
Alt
W
G
E
Input or Output Bidirectional Data I/O Lines. Used as input or output lines depending on operation.
Input or Output Hardware Store Busy (HSB). When LOW, this output indicates a Hardware Store is in progress.
Power Supply Power Supply Inputs to the Device.
Power Supply AutoStore Capacitor. Supplies power to nvSRAM during power loss to store data from SRAM
I/O Type
Ground
Input
Input
Input
Input
Address Inputs. Used to select one of the 8,192 bytes of the nvSRAM.
Write Enable Input, Active LOW. When the chip is enabled and WE is LOW, data on the I/O
pins is written to the specific address location.
Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip.
Output Enable, Active LOW. The active LOW OE input enables the data output buffers during
read cycles. Deasserting OE HIGH causes the I/O pins to tristate.
Ground for the Device. The device is connected to ground of the system.
When pulled low external to the chip, it initiates a nonvolatile STORE operation. A weak internal
pull up resistor keeps this pin high if not connected (connection optional).
to nonvolatile elements.
Figure 1. 28-Pin SOIC/DIP and LLC
Description
STK12C68
Page 3 of 21
[+] Feedback