Document Number: 001-06365 Rev. *D
Revised March 12, 2008
Page 28 of 28
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product and company names mentioned in this document are the trademarks of their respective holders.
CY7C1241V18, CY7C1256V18
CY7C1243V18, CY7C1245V18
© Cypress Semiconductor Corporation, 2006-2008. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
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Document History Page
Document Title: CY7C1241V18/CY7C1256V18/CY7C1243V18/CY7C1245V18, 36-Mbit QDR™-II+ SRAM 4-Word Burst
Architecture (2.0 Cycle Read Latency)
Document Number:
001-06365
REV.
ECN NO.
ISSUE
DATE
ORIG. OF
CHANGE
DESCRIPTION OF CHANGE
**
425689
See ECN
NXR
New Data Sheet
*A
461639
See ECN
NXR
Revised the MPNs from
CY7C1256AV18 to CY7C1256V18
CY7C1243AV18 to CY7C1243V18
CY7C1245AV18 to CY7C1245V18
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
*B
497628
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 #20 to specify Overshoot and Undershoot Spec
Updated
Θ
JA
and
Θ
JC
values
Removed x9 part and its related information
Updated footnote #25
*C
1072841
See ECN
VKN/KKVTMP Converted from preliminary to final
Added x8 and x9 parts
Changed I
DD
values from 950 mA to 1240 mA for 375 MHz, 850 mA to
1120 mA for 333 MHz, 800 mA to 1040 mA for 300 MHz
Changed I
SB
values from 300 mA to 310 mA for 375 MHz, 275 mA to 300
mA for 333 MHz, 250 mA to 280 mA for 300 MHz
Changed t
CYC
max spec to 8.4 ns for all speed bins
Changed
Θ
JA
value from 12.43 °C/W to 16.25 °C/W
Updated Ordering Information table
*D
2198506
See ECN
VKN/AESA
Added footnote# 21related to I
DD
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