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CY7C1355C
CY7C1357C
Document #: 38-05539 Rev. *E Page 20 of 28
Switching Characteristics Over the Operating Range
[16, 17]
Parameter Description
–133 –100
UnitMin. Max. Min. Max.
t
POWER
V
DD
(Typical) to the First Access
[18]
11ms
Clock
t
CYC
Clock Cycle Time 7.5 10 ns
t
CH
Clock HIGH 3.0 4.0 ns
t
CL
Clock LOW 3.0 4.0 ns
Output Times
t
CDV
Data Output Valid after CLK Rise 6.5 7.5 ns
t
DOH
Data Output Hold after CLK Rise 2.0 2.0 ns
t
CLZ
Clock to Low-Z
[19, 20, 21]
00ns
t
CHZ
Clock to High-Z
[19, 20, 21]
3.5 3.5 ns
t
OEV
OE LOW to Output Valid 3.5 3.5 ns
t
OELZ
OE
LOW to Output Low-Z
[19, 20, 21]
00ns
t
OEHZ
OE HIGH to Output High-Z
[19, 20, 21]
3.5 3.5 ns
Set-up Times
t
AS
Address Set-up before CLK Rise 1.5 1.5 ns
t
ALS
ADV/LD Set-up before CLK Rise 1.5 1.5 ns
t
WES
WE, BW
X
Set-up before CLK Rise 1.5 1.5 ns
t
CENS
CEN
Set-up before CLK Rise 1.5 1.5 ns
t
DS
Data Input Set-up before CLK Rise 1.5 1.5 ns
t
CES
Chip Enable Set-Up before CLK Rise 1.5 1.5 ns
Hold Times
t
AH
Address Hold after CLK Rise 0.5 0.5 ns
t
ALH
ADV/LD Hold after CLK Rise 0.5 0.5 ns
t
WEH
WE, BW
X
Hold after CLK Rise 0.5 0.5 ns
t
CENH
CEN Hold after CLK Rise 0.5 0.5 ns
t
DH
Data Input Hold after CLK Rise 0.5 0.5 ns
t
CEH
Chip Enable Hold after CLK Rise 0.5 0.5 ns
Notes:
16.Timing reference level is 1.5V when V
DDQ
= 3.3V and is 1.25V when V
DDQ
= 2.5V.
17.Test conditions shown in (a) of AC Test Loads unless otherwise noted.
18.This part has a voltage regulator internally; t
POWER
is the time that the power needs to be supplied above V
DD
(minimum) initially, before a Read or Write operation
can be initiated.
19.t
CHZ
, t
CLZ
,t
OELZ
, and t
OEHZ
are specified with AC test conditions shown in part (b) of AC Test Loads. Transition is measured ± 200 mV from steady-state voltage.
20.At any given voltage and temperature, t
OEHZ
is less than t
OELZ
and t
CHZ
is less than t
CLZ
to eliminate bus contention between SRAMs when sharing the same
data bus. These specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user conditions. Device is designed
to achieve High-Z prior to Low-Z under the same system conditions.
21.This parameter is sampled and not 100% tested.
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