CY7C057V-20AC Cypress Semiconductor Corp, CY7C057V-20AC Datasheet - Page 10
![](/photos/37/15/371545/144pin_tqfp_sml.jpg)
CY7C057V-20AC
Manufacturer Part Number
CY7C057V-20AC
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C057V-20AC.pdf
(23 pages)
Specifications of CY7C057V-20AC
Density
1.125Mb
Access Time (max)
20ns
Sync/async
Asynchronous
Architecture
Not Required
Clock Freq (max)
Not RequiredMHz
Operating Supply Voltage (typ)
3.3V
Address Bus
15b
Package Type
TQFP
Operating Temp Range
0C to 70C
Number Of Ports
2
Supply Current
340mA
Operating Supply Voltage (min)
3.135V
Operating Supply Voltage (max)
3.465V
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
144
Word Size
36b
Number Of Words
32K
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY7C057V-20AC
Manufacturer:
CY
Quantity:
547
Company:
Part Number:
CY7C057V-20AC
Manufacturer:
CYPRESS
Quantity:
455
Document #: 38-06055 Rev. *B
Switching Waveforms
Read Cycle No. 3 (Either Port)
Read Cycle No. 2 (Either Port CE/OE Access)
Read Cycle No. 1 (Either Port Address Access)
CURRENT
Notes:
DATA OUT
23. R/W is HIGH for read cycles.
24. Device is continuously selected. CE
25. OE = V
26. Address valid prior to or coinciding with CE
27. To access RAM, CE
ADDRESS
CE
B
B
DATA OUT
B
2
ADDRESS
and SEM=V
0
DATA OUT
3
, B
0
CE
, CE
, WA, BA
, B
3
0
, WA, BA
1
, CE
1
, B
IL
, B
.
I
I
CC
SB
2
OE
0
,
1
, B
IL
, and CE
1
PREVIOUS DATA VALID
,
0
= V
1
= B
IL
, CE
0
= B
1
1
=V
t
= B
OHA
IH
[23, 25, 26, 27]
0
, B
2
= V
= B
0
, B
IL
t
3
, CE
AA
0
, =V
1
, B
transition LOW and CE
t
PU
1
2
IH
=V
, B
t
.
AA
IH
3
t
t
, WA, BA are valid, and SEM = V
LZCE
LZCE
, and B
t
LZCE
[23, 26, 27]
t
t
ACE
ABE
[23, 24, 25]
0
, B
BYTE SELECT VALID
t
LZOE
1
, B
t
t
SELECT VALID
RC
ACE
2
1
t
, B
RC
transition HIGH.
t
DOE
3
, WA, BA are valid. This waveform cannot be used for semaphore reads.
CHIP SELECT VALID
IH
. To access semaphore, CE
DATA VALID
DATA VALID
0
= V
t
OHA
IH
, CE
t
t
t
OHA
HZCE
PD
1
t
=V
t
t
HZCE
HZCE
HZOE
IL
and SEM = V
CY7C056V
CY7C057V
Page 10 of 23
IL
or CE
0
[+] Feedback