CY14B256L-SZ45XIT Cypress Semiconductor Corp, CY14B256L-SZ45XIT Datasheet - Page 13

• Manufacturer Part Number: CY14B256L-SZ45XIT
• Description: IC NVSRAM 256KBIT 45NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of CY14B256L-SZ45XIT

• 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: -40°C ~ 85°C
• Package / Case: 32-SOIC (7.5mm Width)
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 45ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: SOIC
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 2.7V
• Operating Temp Range: -40C to 85C
• Pin Count: 32
• Mounting: Surface Mount
• Supply Current: 55mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Software Controlled STORE/RECALL Cycle
The software controlled STORE/RECALL cycle follows.
Document Number: 001-06422 Rev. *I
Switching Waveforms
Notes
t
t
t
t
t
15. The software sequence is clocked on the falling edge of CE controlled READs or OE controlled READs.
16. 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
HA
RECALL
Parameter
DQ (DATA)
[16]
ADDRESS
ADDRESS
DQ (DATA)
CE
OE
CE
OE
t
t
t
t
AVAV
AVEL
ELEH
GHAX,
Alt
t
ELAX
t
t
SA
SA
A
A
D
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
D
D
DATA VALID
D
R
t
R
t
RC
E
Figure 10. CE Controlled Software STORE/RECALL Cycle
t
Figure 11. OE Controlled Software STORE/RECALL Cycle
SCE
RC
E
S
t
DATA VALID
S
S
SCE
S
#
#
1
1
t
t
HA
HA
Description
[15, 16]
A
Min
25
20
A
D
0
1
D
D
D
t
R
25 ns
RC
t
R
E
RC
E
S
DATA VALID
S
S
DATA VALID
S
Max
#
120
#
6
6
t
STORE
t
Min
STORE
35
25
0
1
HIGH IMPEDANCE
HIGH IMPEDANCE
[16]
[16]
/ t
35 ns
/ t
RECALL
RECALL
Max
120
Min
45
30
0
1
CY14B256L
45 ns
Page 13 of 19
Max
120
Unit
ns
ns
ns
ns
μs
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