CY14E256LA_11 Datasheet, PDF (15/19 Pages) Cypress Semiconductor – 256-Kbit (32 K × 8) Nonvolatile SRAM

CY14E256LA
Truth Table For SRAM Operations
HSB must remain HIGH for SRAM operations.
Table 2. Truth Table
CE
WE
OE
H
X
X
L
H
L
L
H
H
L
L
X
Inputs/Outputs
High Z
Data out (DQ₀–DQ₇)
High Z
Data in (DQ₀–DQ₇)
Mode
Deselect/power-down
Read
Output disabled
Write
Power
Standby
Active
Active
Active
Ordering Information
Speed
(ns)
Ordering Code
25 CY14E256LA-SZ25XIT
CY14E256LA-SZ25XI
45 CY14E256LA-SZ45XIT
CY14E256LA-SZ45XI
All the mentioned parts are Pb-free.
Ordering Code Definition
CY 14 E 256 L A-ZS 25 X I T
Pb-Free
Die revision:
Blank – No rev
A – 1^st Rev
Voltage:
E – 5.0 V
Package
Diagram
51-85127
Package Type
32-pin SOIC
Operating
Range
Industrial
Option:
T – Tape and Reel
Blank – Std.
Package:
ZS – 44 TSOP II
SZ – 32 SOIC
Temperature:
I – Industrial (–40 to 85 ^oC)
Speed:
25 to 25 ns
45 to 45 ns
Data Bus:
L – x8
Density:
256 – 256 Kb
14 – nvSRAM
Cypress
Document Number: 001-54952 Rev. *F
Page 15 of 19
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