STK14D88-RF45 Cypress Semiconductor Corp, STK14D88-RF45 Datasheet - Page 6

• Manufacturer Part Number: STK14D88-RF45
• Description: IC NVSRAM 256KBIT 45NS 48SSOP
• Manufacturer: Cypress Semiconductor Corp

Specifications of STK14D88-RF45

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 48-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SRAM READ Cycles #1 and #2
Document Number: 001-52037 Rev. *A
Notes
NO.
4. W must be high during SRAM READ cycles.
5. Device is continuously selected with E and G both low.
6. Measured ± 200 mV from steady state output voltage.
7. HSB must remain high during READ and WRITE cycles.
10
11
1
2
3
4
5
6
7
8
9
t
t
t
AVAV
AVQV
AXQX
#1
[4]
[5]
[5]
DQ (DATA OUT)
t
t
t
t
t
t
t
t
t
t
ADDRESS
t
ELQV
AVQV
GLQV
AXQX
ELQX
EHQZ
GLQX
GHQZ
ELICCH
EHICCL
Symbols
ELEH
#2
[5]
[5]
[6]
[4]
[6]
[3]
[3]
t
t
t
t
t
t
t
t
t
t
t
ACS
RC
AA
OE
OH
LZ
HZ
OLZ
OHZ
PA
PS
Alt.
Figure 4. 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
Address Change or Chip Enable to
Output Active
Address Change or 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
Figure 5. SRAM READ Cycle 2: E Controlled
10
6
t
AXQX
3
8
5
Parameter
4
1
2
t
AVQV
3
t
AVAV
2
STK14D88-25 STK14D88-35 STK14D88-45
Min
25
3
3
0
0
DATA VALID
Max
29
25
25
12
10
10
25
[4, 7]
[4, 5, 6]
Min
35
3
3
0
0
9
7
Max
11
35
35
15
13
13
35
Min
45
3
3
0
0
STK14D88
Max
45
45
20
15
15
45
Page 6 of 18
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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