CY7C057V-20AC Cypress Semiconductor Corp, CY7C057V-20AC Datasheet - Page 9

• Manufacturer Part Number: CY7C057V-20AC
• Manufacturer: Cypress Semiconductor Corp

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

Document #: 38-06055 Rev. *B
Switching Characteristics
Data Retention Mode
The CY7C056V and CY7C057V are designed with battery
backup in mind. Data retention voltage and supply current are
guaranteed over temperature. The following rules ensure data
retention:
Notes:
21. t
22. CE = V
t
t
t
t
t
t
t
t
t
t
t
1. Chip Enable (CE)
2. CE must be kept between V
3. The RAM can begin operation >t
BHC
PS
WB
WH
BDD
INS
INR
SOP
SWRD
SPS
SAA
Busy Timing
Interrupt Timing
Semaphore Timing
retention, within V
during the power-up and power-down transitions.
minimum operating voltage (3.15 volts).
Parameter
BDD
[21]
is a calculated parameter and is the greater of t
DD
, V
in
= V
[20]
SS
BUSY HIGH from CE HIGH
Port Set-Up for Priority
R/W LOW after BUSY (Slave)
R/W HIGH after BUSY HIGH (Slave)
BUSY HIGH to Data Valid
INT Set Time
INT Reset Time
SEM Flag Update Pulse (OE or SEM)
SEM Flag Write to Read Time
SEM Flag Contention Window
SEM Address Access Time
[20]
to V
[3]
DD
DD
must be held HIGH during data
to V
, T
A
= 25°C. This parameter is guaranteed but not tested.
DD
DD
– 0.2V.
Description
– 0.2V and 70% of V
Over the Operating Range
RC
after V
WDD
DD
–t
PWE
reaches the
(actual) or t
DD
DDD
[14]
Min.
11
10
5
0
5
5
–t
(continued)
SD
Timing
V
CE
ICC
-12
CC
(actual).
Parameter
Max.
DR1
12
12
12
12
12
Min.
13
10
CY7C056V
CY7C057V
5
0
5
5
3.15V
-15
@ VDD
Data Retention Mode
Test Conditions
V
CC
Max.
15
15
15
15
15
V
to V
CC
DR
> 2.0V
CC
= 2V
– 0.2V
Min.
15
10
5
0
5
5
3.15V
-20
[22]
Max.
CY7C056V
CY7C057V
20
20
20
20
20
Max.
50
Page 9 of 23
V
t
IH
RC
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
µA
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