STK14C88-NF45 Cypress Semiconductor Corp, STK14C88-NF45 Datasheet - Page 3

• Manufacturer Part Number: STK14C88-NF45
• Description: IC NVSRAM 256KBIT 45NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK14C88-NF45

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-SOIC (7.5mm Width)
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 45ns
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: 0C to 70C
• Pin Count: 32
• Mounting: Surface Mount
• Supply Current: 70mA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pin Configurations
Figure 1. Pin Diagram - 32-Pin 300 Mil SOIC/CDIP
Pin Descriptions
Document Number: 001-52038 Rev. *B
Pin Name
DQ
A
V
HSB
V
V
14
NC
7
CAP
W
G
E
CC
SS
-DQ
-A
0
0
V
DQ
DQ
DQ
V
Power Supply Power: 5.0V, +10%.
Power Supply AutoStore Capacitor: Supplies power to nvSRAM during power loss to store data from SRAM
Power Supply Ground.
NC
CAP
A
A
A
A
A
A
A
A
A
A
No Connect
SS
14
12
7
6
3
2
1
5
4
0
0
1
2
Input
Input
Input
Input
I/O
I/O
I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
(TOP)
Address: The 15 address inputs select one of 32,768 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 tristate.
Hardware Store Busy: When low this output indicates a Store is in progress. When pulled
low external to the chip, it initiates a nonvolatile STORE operation. A weak pull up resistor
keeps this pin high if not connected. (optional connection).
to nonvolatile storage elements.
Unlabeled pins have no internal connections.
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
HSB
V
W
NC
A
A
DQ
DQ
DQ
DQ
DQ
A
A
A
G
E
CC
11
10
13
8
9
7
6
5
4
3
Figure 2. Pin Diagram - 32-Pin 450 Mil LCC
Description
DQ
NC
A
A
A
A
A
A
A
6
3
2
1
5
4
0
0
(TOP)
NC
A
DQ
A
A
A
A
G
E
10
13
8
11
9
7
STK14C88
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