STK12C68-SF25I Cypress Semiconductor Corp, STK12C68-SF25I Datasheet - Page 14

• Manufacturer Part Number: STK12C68-SF25I
• Description: STK12C68-SF25I
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK12C68-SF25I

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 64K (8K 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)
• Word Size: 8b
• Organization: 8Kx8
• Density: 64Kb
• Interface Type: Parallel
• Access Time (max): 25ns
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -40C to 85C
• Pin Count: 28
• Mounting: Surface Mount
• Supply Current: 85mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Software Controlled STORE/RECALL Cycle
The software controlled STORE/RECALL cycle follows.
Switching Waveform
Notes
Document Number: 001-51027 Rev. *D
t
t
t
t
t
17. The software sequence is clocked on the falling edge of CE without involving OE (double clocking aborts the sequence).
18. The six consecutive addresses must be read in the order listed in
RC
SA
CW
HACE
RECALL
Parameter
[17]
[14]
[17]
ADDRESS
DQ (DATA)
[17]
CE
OE
t
t
t
t
AVAV
AVEL
ELEH
ELAX
Alt
t
SA
A
D
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
DATA VALID
D
Figure 12. CE Controlled Software STORE/RECALL Cycle
R
t
t
SCE
RC
E
S
t
HACE
S
#
1
Description
Table 1
[18]
on page 7. WE must be HIGH during all six consecutive cycles.
Min
A
25
20
20
0
D
D
25 ns
t
R
RC
E
S
DATA VALID
S
Max
#
20
6
t
Min
35
25
20
STORE
0
[18]
35 ns
HIGH IMPEDANCE
/ t
Max
RECALL
20
Min
45
30
20
0
45 ns
STK12C68
Page 14 of 23
Max
20
Unit
ns
ns
ns
ns
μs
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