CY7C144AV-20AC Cypress Semiconductor Corp, CY7C144AV-20AC Datasheet - Page 8

• Manufacturer Part Number: CY7C144AV-20AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C144AV-20AC

• Density: 64Kb
• Access Time (max): 20ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Supply Current: 175mA
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Word Size: 8b
• Lead Free Status / Rohs Status: Not Compliant

AC Test Loads and Waveforms
.
Switching Characteristics
Document #: 38-06051 Rev. *C
OUTPUT
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes:
15. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified
16. To access RAM, CE=L, SEM=H. To access semaphore, CE=H and SEM=L. Either condition must be valid for the entire t
17. At any given temperature and voltage condition for any given device, t
18. Test conditions used are Load 3.
19. This parameter is guaranteed but not tested. For information on port-to-port delay through RAM cells from writing port to reading port, refer to Read Timing with
RC
AA
OHA
ACE
DOE
LZOE
HZOE
LZCE
HZCE
PU
PD
WC
SCE
AW
HA
SA
PWE
SD
READ CYCLE
WRITE CYCLE
C = 30 pF
(a) Normal Load (Load 1)
[16]
I
Busy waveform.
[19]
[19]
OI
Parameter
[16]
[16]
/I
[17, 18, 19]
[17, 18, 19]
[17, 18, 19]
[17, 18, 19]
OH
and 30-pF load capacitance.
Read Cycle Time
Address to Data Valid
Output Hold From Address Change
CE LOW to Data Valid
OE LOW to Data Valid
OE Low to Low Z
OE HIGH to High Z
CE LOW to Low Z
CE HIGH to High Z
CE LOW to Power-Up
CE HIGH to Power-Down
Write Cycle Time
CE LOW to Write End
Address Valid to Write End
Address Hold From Write End
Address Set-Up to Write Start
Write Pulse Width
Data Set-Up to Write End
3.3V
R1 = 590Ω
R2 = 435Ω
Over the Operating Range
GND
3.0V
Description
≤
3 ns
OUTPUT
(b) Thévenin Equivalent (Load 1)
10%
C = 30 pF
ALL INPUT PULSES
90%
HZCE
R
[15]
is less than t
TH
= 250Ω
LZCE
90%
Min.
and t
V
20
20
16
16
16
12
3
3
3
0
0
0
TH
10%
HZOE
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
= 1.4V
≤
-20
3 ns
CY7C007AV/017AV
is less than t
CY7C138AV/144AV/006AV
CY7C139AV/145AV/016AV
Max.
20
20
12
12
12
20
OUTPUT
SCE
(c) Three-State Delay (Load 2)
LZOE
C = 5 pF
time.
(Used for t
including scope and jig)
.
CY7C007AV/017AV
Min.
25
25
20
20
20
15
3
3
3
0
0
0
-25
LZ
Max.
, t
25
13
25
15
15
25
HZ
, t
3.3V
HZWE
Page 8 of 20
R1 = 590Ω
R2 = 435Ω
Unit
& t
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
LZWE