CY14E256LA-SZ25XI Cypress Semiconductor Corp, CY14E256LA-SZ25XI Datasheet - Page 14

• Manufacturer Part Number: CY14E256LA-SZ25XI
• Description: IC NVSRAM 256KBIT 25NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY14E256LA-SZ25XI

• Memory Size: 256K (32K x 8)
• Package / Case: *
• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Organization: 32 K x 8
• Access Time: 25 ns
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Operating Current: 70 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Document Number: 001-54952 Rev. *D
Hardware STORE Cycle
Switching Waveforms
t
t
t
Notes
DHSB
PHSB
SS
25. This is the amount of time it takes to take action on a soft sequence command. Vcc power must remain HIGH to effectively register command.
26. Commands such as STORE and RECALL lock out I/O until operation is complete which further increases this time. See the specific command.
[25, 26]
DQ (Data Out)
Parameters
HSB (OUT)
Address
HSB (OUT)
Write latch not set
Write latch set
HSB (IN)
HSB (IN)
V
CE
CC
RWI
RWI
Address #1
t
SA
HSB To Output Active Time when write latch not set
Hardware STORE Pulse Width
Soft Sequence Processing Time
t
DELAY
Soft Sequence
t
t
PHSB
DELAY
t
Command
PHSB
Figure 12. Soft Sequence Processing
Figure 11. Hardware STORE Cycle
Address #6
t
DHSB
t
CW
Description
t
SS
t
STORE
t
DHSB
Address #1
Soft Sequence
100kOhm resistor,
SRAM is disabled as long as HSB (IN) is driven low.
HSB pin is driven high to V
HSB driver is disabled
Command
[18]
[25, 26]
Address #6
t
CW
t
LZHSB
t
HHHD
t
CC
SS
Min
CY14E256LA
15
only by Internal
CY14E256LA
Max
100
25
Page 14 of 18
Unit
ns
ns
μs
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