CY7C037V-20AC Cypress Semiconductor Corp, CY7C037V-20AC Datasheet - Page 8

• Manufacturer Part Number: CY7C037V-20AC
• Description: SRAM Chip Async Dual 3.3V 576K-Bit 32K x 18 20ns 100-Pin TQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C037V-20AC

• Package: 100TQFP
• Timing Type: Asynchronous
• Density: 576 Kb
• Typical Operating Supply Voltage: 3.3 V
• Address Bus Width: 15 Bit
• Number Of I/o Lines: 18 Bit
• Number Of Ports: 2
• Number Of Words: 32K

Document #: 38-06078 Rev. *A
Switching Characteristics
Data Retention Mode
The CY7C027V/028V and CY7037V/038V are designed with
battery backup in mind. Data retention voltage and supply cur-
rent are guaranteed over temperature. The following rules en-
sure data retention:
1. Chip enable (CE) must be held HIGH during data retention, with-
2. CE must be kept between V
3. The RAM can begin operation >t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
HD
HZWE
LZWE
WDD
DDD
BLA
BHA
BLC
BHC
PS
WB
WH
BDD
INS
INR
SOP
SWRD
SPS
SAA
Busy Timing
Interrupt Timing
Semaphore Timing
in V
during the power-up and power-down transitions.
imum operating voltage (3.0 volts).
Parameter
[18]
[41]
[41]
[14 ,15]
CC
[14, 15]
to V
CC
[16]
– 0.2V.
Data Hold From Write End
R/W LOW to High Z
R/W HIGH to Low Z
Write Pulse to Data Delay
Write Data Valid to Read Data Valid
BUSY LOW from Address Match
BUSY HIGH from Address Mismatch
BUSY LOW from CE LOW
BUSY HIGH from CE HIGH
Port Set-Up for Priority
R/W HIGH 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
[16]
CC
Description
– 0.2V and 70% of V
Over the Operating Range
RC
after V
CC
reaches the min-
CC
[11]
(continued)
Min.
13
10
0
3
5
0
5
5
Timing
V
CE
ICC
16. For information on port-to-port delay through RAM cells from writing port
17. Test conditions used are Load 1.
18. t
19. CE = V
CC
-15
Parameter
DR1
to reading port, refer to Read Timing with Busy waveform.
(actual).
but not tested.
BDD
Max.
10
30
25
15
15
15
15
15
15
15
15
is a calculated parameter and is the greater of t
CC
, V
in
CY7C037V/038V
= GND to V
Min.
10
15
0
3
5
0
5
5
3.0V
@ VCC
Data Retention Mode
Test Conditions
V
-20
CC
V
CC
Max.
to V
CC
12
40
30
20
20
20
16
20
20
20
20
DR
, T
> 2.0V
CC
A
= 2V
= 25° C. This parameter is guaranteed
– 0.2V
CY7C027V/028V
CY7C037V/038V
Min.
17
12
0
3
5
0
5
5
[19]
3.0V
WDD
-25
–t
PWE
Max.
15
50
35
20
20
20
17
25
20
20
25
Max.
50
(actual) or t
Page 8 of 18
V
t
IH
RC
Unit
Unit
DDD
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µA
–t
SD