STK15C88-SF25 Cypress Semiconductor Corp, STK15C88-SF25 Datasheet - Page 9

• Manufacturer Part Number: STK15C88-SF25
• Description: STK15C88-SF25
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK15C88-SF25

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (8.69mm width)
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 25ns
• 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: 28
• Mounting: Surface Mount
• Supply Current: 97mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC Switching Characteristics
SRAM Read Cycle
Switching Waveforms
Document Number: 001-50593 Rev. *B
t
t
t
t
t
t
t
t
t
t
t
Notes
ACE
RC
AA
DOE
OHA
LZCE
HZCE
LZOE
HZOE
PU
PD
5. WE must be HIGH during SRAM Read Cycles and LOW during SRAM WRITE cycles.
6. I/O state assumes CE and OE < V
7. Measured ±200 mV from steady state output voltage.
Parameter
[6]
[5]
[4]
[4]
Cypress
[6]
[7]
[7]
[7]
[7]
Parameter
t
t
t
t
t
t
t
t
t
t
t
ELQV
AVAV,
AVQV
GLQV
AXQX
ELQX
EHQZ
GLQX
GHQZ
ELICCH
EHICCL
t
ELEH
Alt
IL
and WE > V
Figure 6. SRAM Read Cycle 2: CE and OE Controlled
Figure 5. SRAM Read Cycle 1: Address Controlled
Chip Enable Access Time
Read Cycle Time
Address Access Time
Output Enable to Data Valid
Output Hold After Address Change
Chip Enable to Output Active
Chip Disable to Output Inactive
Output Enable to Output Active
Output Disable to Output Inactive
Chip Enable to Power Active
Chip Disable to Power Standby
IH
; device is continuously selected.
Description
Min
25
5
5
0
0
25 ns
[5, 7]
[5]
Max
10
10
10
25
25
25
Min
45
5
5
0
0
45 ns
STK15C88
Max
45
45
20
15
15
45
Page 9 of 16
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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