STK15C88-SF25I Cypress Semiconductor Corp, STK15C88-SF25I Datasheet - Page 12

• Manufacturer Part Number: STK15C88-SF25I
• Description: STK15C88-SF25I
• Manufacturer: Cypress Semiconductor Corp

Specifications of STK15C88-SF25I

• 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: -40°C ~ 85°C
• Package / Case: 28-SOIC (8.69mm width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Software Controlled STORE/RECALL Cycle
The software controlled STORE/RECALL cycle follows.
Switching Waveforms
Document Number: 001-50593 Rev. *B
Notes
t
t
t
t
t
11. The software sequence is clocked on the falling edge of CE without involving OE (double clocking will abort the sequence).
12. The six consecutive addresses must be read in the order listed in the Mode Selection table. WE must be HIGH during all six consecutive cycles.
RC
SA
CW
HACE
RECALL
Parameter
[11]
[11]
ADDRESS
DQ (DATA)
[7, 11]
CE
OE
t
t
t
t
AVAV
AVEL
ELEH
ELAX
Alt
t
SA
A
D
DATA VALID
D
Figure 10. CE Controlled Software STORE/RECALL Cycle
R
t
t
SCE
RC
E
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
S
t
HACE
S
#
1
Description
[11, 12]
A
D
D
t
R
RC
E
S
DATA VALID
S
#
Min
25
20
20
6
0
25 ns
t
STORE
[12]
Max
HIGH IMPEDANCE
20
/ t
RECALL
Min
45
30
20
0
45 ns
STK15C88
Max
Page 12 of 16
20
Unit
ns
ns
ns
ns
μs
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