CY7C4245-10ASC Cypress Semiconductor Corp, CY7C4245-10ASC Datasheet - Page 6
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CY7C4245-10ASC
Manufacturer Part Number
CY7C4245-10ASC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C4245-10ASC.pdf
(25 pages)
Specifications of CY7C4245-10ASC
Configuration
Dual
Density
72Kb
Access Time (max)
8ns
Word Size
18b
Organization
4Kx18
Sync/async
Synchronous
Expandable
Yes
Bus Direction
Uni-Directional
Package Type
TQFP
Clock Freq (max)
100MHz
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
45mA
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Lead Free Status / Rohs Status
Not Compliant
Switching Characteristics
Switching Waveforms
Write Cycle Timing
t
t
t
t
t
t
t
t
t
t
t
Parameter
PAFasynch
PAFsynch
PAEasynch
PAEsynch
HF
XO
XI
XIS
SKEW1
SKEW2
SKEW3
Notes:
12.
13. t
D
PAFasynch
rising edge of RCLK and the rising edge of WCLK is less than t
0
SKEW1
WCLK
RCLK
WEN
–D
REN
FF
17
is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that FF will go HIGH during the current clock cycle. If the time between the
, t
PAEasynch
Clock to Programmable Almost-Full Flag
Clock to Programmable Almost-Full Flag
Clock to Programmable Almost-Empty Flag
Clock to Programmable Almost-Full Flag
Clock to Half-Full Flag
Clock to Expansion Out
Expansion in Pulse Width
Expansion in Set-Up Time
Skew Time between Read Clock and Write
Clock for Full Flag
Skew Time between Read Clock and Write
Clock for Empty Flag
Skew Time between Read Clock and Write
Clock for Programmable Almost Empty and Pro-
grammable Almost Full Flags.
(Asynchronous mode, V
(Asynchronous mode, V
(Synchronous mode, V
(Synchronous mode, V
, after program register write will not be valid until 5 ns + t
t
Description
SKEW1
Over the Operating Range (continued)
CC
[13]
t
CC
CC
CLKH
CC
/SMODE tied to V
/SMODE tied to V
/SMODE tied to V
t
/SMODE tied to V
WFF
t
CLK
SKEW1
, then FF may not change state until the next WCLK edge.
[12]
CC
t
DS
[12]
)
t
CC
SS
SS
CLKL
PAF(E)
)
)
t
)
ENS
6
.
Min. Max. Min. Max. Min.
7C42X5-10
4.5
10
3
5
5
12
12
12
8
8
7
t
DH
t
ENH
7C42X5-15
6.5
15
5
6
6
t
WFF
16
10
16
10
16
10
CY7C4425/4205/4215
CY7C4225/4235/4245
7C42X5-25
10
10
10
10
18
NO OPERATION
Max. Min.
20
15
20
15
20
15
7C42X5-35
14
15
12
12
20
Max. Unit
25
20
25
20
25
20
42X5–6
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns