Datasheet

CY7C1543V18
CY7C1545V18
Document Number: 001-05389 Rev. *H Page 25 of 26
Document History Page
Document Title: CY7C1543V18/CY7C1545V18, 72-Mbit QDR
®
II+ SRAM 4-Word Burst Architecture (2.0 Cycle Read Latency)
Document Number: 001-05389
Rev. ECN N0.
Submission
Date
Orig. of
Change
Description of Change
** 403090 See ECN VEE New Data Sheet
*A 425252 See ECN VEE Updated the DLL Section
Fixed typos in the DC and AC parameter section
Updated the switching waveform
Updated the Power up sequence
Added additional parameters in the AC timing
*B 437000 See ECN IGS ECN for Show on web
*C 461934 See ECN NXR Moved the Selection Guide table from page# 3 to page# 1
Modified Application Diagram
Changed t
TH
and t
TL
from 40 ns to 20 ns, changed t
TMSS
, t
TDIS
, t
CS
, t
TMSH
, t
TDIH
,
t
CH
from 10 ns to 5 ns and changed t
TDOV
from 20 ns to 10 ns in TAP AC Switching
Characteristics table
Modified Power Up waveform
Included Maximum ratings for Supply Voltage on V
DDQ
Relative to GND
Changed the Maximum Ratings for DC Input Voltage from V
DDQ
to V
DD
Changed the Pin Definition of I
X
from Input Load current to Input Leakage current
on page#18
*D 497567 See ECN NXR Changed the V
DDQ
operating voltage to 1.4V to V
DD
in the Features section, in
Operating Range table and in the DC Electrical Characteristics table
Added foot note in page# 1
Changed the Maximum rating of Ambient Temperature with Power Applied from
–10
C to +85C to –55C to +125C
Changed V
REF
(Max) spec from 0.85V to 0.95V in the DC Electrical Characteristics
table and in the note below the table
Updated footnote #21 to specify Overshoot and Undershoot Spec
Updated I
DD
and I
SB
values
Updated 
JA
and 
JC
values
Removed x9 part and its related information
Updated footnote #25
*E 1351243 See ECN VKN/FSU Converted from preliminary to final
Added x8 and x9 parts
Changed t
CYC
max spec to 8.4 ns for all speed bins
Updated footnote# 23
Updated Ordering Information table
*F 2181046 See ECN VKN/AESA Added footnote# 22 related to I
DD
*G 2880098 02/17/10 VKN/AESA Removed x8 and x9 part number details
Included Soft Error Immunity Data
Modified Ordering Information table by including parts that are available and
modified the disclaimer for the Ordering information
Updated package outline diagram.
*H 3056507 10/12/2010 AJU Obsolete document
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