STK12C68-SF45I Cypress Semiconductor Corp, STK12C68-SF45I Datasheet - Page 13

• Manufacturer Part Number: STK12C68-SF45I
• Description: IC NVSRAM 64KBIT 45NS 28SOIC
• Manufacturer: Cypress Semiconductor Corp
• Series: -r

Specifications of STK12C68-SF45I

• Memory Size: 64K (8K x 8)
• Package / Case: 28-SOIC (8.69mm width)
• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Access Time: 45 ns
• Supply Voltage (max): 7 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Current: 65 mA
• Organization: 8 K x 8
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 4.5 V to 5.5 V
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Software Controlled STORE/RECALL Cycle
The software controlled STORE/RECALL cycle follows.
Document Number: 001-51027 Rev. *E
Switching Waveform
Notes
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
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
D
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
Min
t
35
25
20
STORE
0
[18]
35 ns
HIGH IMPEDANCE
/ t
Max
RECALL
20
Min
45
30
20
0
45 ns
STK12C68
Page 13 of 22
Max
20
Unit
ns
ns
ns
ns
μs
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