CY7C027/028
CY7C037/038
Document #: 38-06042 Rev. *D Page 4 of 19
Pin Definitions
Left Port Right Port Description
CE
0L
, CE
1L
CE
0R
, CE
1R
Chip Enable (CE is LOW when CE
0
V
IL
and CE
1
V
IH
)
R/W
L
R/W
R
Read/Write Enable
OE
L
OE
R
Output Enable
A
0L
–A
15L
A
0R
–A
15R
Address (A
0
–A
14
for 32K; A
0
–A
15
for 64K devices)
I/O
0L
–I/O
17L
I/O
0R
–I/O
17R
Data Bus Input/Output (I/O
0
–I/O
15
for x16 devices; I/O
0
–I/O
17
for x18)
SEM
L
SEM
R
Semaphore Enable
UB
L
UB
R
Upper Byte Select (I/O
8
–I/O
15
for x16 devices; I/O
9
–I/O
17
for x18 devices)
LB
L
LB
R
Lower Byte Select (I/O
0
–I/O
7
for x16 devices; I/O
0
–I/O
8
for x18 devices)
INT
L
INT
R
Interrupt Flag
BUSY
L
BUSY
R
Busy Flag
M/S
Master or Slave Select
V
CC
Power
GND Ground
NC No Connect
[+] Feedback
CY7C027/028
CY7C037/038
Document #: 38-06042 Rev. *D Page 5 of 19
Maximum Ratings
[8]
Exceeding maximum ratings may shorten the useful life of the
device. User guidelines are not tested.
Storage Temperature .................................–65
°
C to +150
°
C
Ambient Temperature with
Power Applied ............................................–55
°
C to +125
°
C
Supply Voltage to Ground Potential................–0.3V to +7.0V
DC Voltage Applied to Outputs
in High Z State.............................................–0.5V to +7.0DC
Input Voltage
[9]
...............................................–0.5V to +7.0V
Output Current into Outputs (LOW).............................20 mA
Static Discharge Voltage........................................... >1100V
Latch-Up Current.................................................... >200 mA
Operating Range
Range
Ambient
Temperature V
CC
Commercial 0
°
C to +70
°
C 5V ± 10%
Industrial
[10]
–40
°
C to +85
°
C 5V ± 10%
Electrical Characteristics
Over the Operating Range
Symbol Parameter
CY7C027/028
CY7C037/038
Unit
-12
[1]
-15 -20
Min Typ Max Min Typ Max Min Typ Max
V
OH
Output HIGH Voltage (V
CC
= Min, I
OH
=
–4.0 mA)
2.4 2.4 2.4 V
V
OL
Output LOW Voltage (V
CC
= Min, I
OH
=
+4.0 mA)
0.4 0.4 0.4 V
V
IH
Input HIGH Voltage 2.2 2.2 2.2 V
V
IL
Input LOW Voltage 0.8 0.8 0.8 V
I
OZ
Output Leakage Current –10 10 –10 10 –10 10 μA
I
CC
Operating Current (V
CC
=Max,
I
OUT
=0 mA)
Outputs Disabled
Com’l. 195 325 190 280 180 265 mA
Ind.
[10]
305 290 mA
I
SB1
Standby Current (Both Ports
TTL Level) CE
L
& CE
R
V
IH
, f
= f
MAX
Com’l. 55 75 50 70 45 65 mA
Ind.
[10]
60 80 mA
I
SB2
Standby Current (One Port TTL
Level) CE
L
| CE
R
V
IH
, f = f
MAX
Com’l. 125 205 120 180 110 160 mA
Ind.
[10]
125 175 mA
I
SB3
Standby Current (Both Ports
CMOS Level) CE
L
& CE
R
V
CC
– 0.2V, f = 0
Com’l. 0.05 0.5 0.05 0.5 0.05 0.5 mA
Ind.
[10]
0.05 0.5 mA
I
SB4
Standby Current (One Port
CMOS Level) CE
L
| CE
R
V
IH
,
f = f
MAX
[11]
Com’l. 115 185 110 160 100 140 mA
Ind.
[10]
115 155 mA
Notes
8. The voltage on any input or I/O pin cannot exceed the power pin during power up.
9. Pulse width < 20 ns.
10. Industrial parts are available in CY7C028 and CY7C038 only.
11. f
MAX
= 1/t
RC
= All inputs cycling at f = 1/t
RC
(except output enable). f = 0 means no address or control lines change. This applies only to inputs at CMOS
level standby I
SB3.
[+] Feedback
CY7C027/028
CY7C037/038
Document #: 38-06042 Rev. *D Page 6 of 19
AC Test Loads (Applicable to -12 only)
[13]
Capacitance
[12]
Parameter Description Test Conditions Max Unit
C
IN
Input Capacitance T
A
= 25
°
C, f = 1 MHz,
V
CC
= 5.0V
10 pF
C
OUT
Output Capacitance 10 pF
Figure 3. AC Test Loads and Waveforms
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
0 5 10 15 20 25 30
[+] Feedback

CY7C027-15AXI

Mfr. #:
Manufacturer:
Cypress Semiconductor
Description:
SRAM 32Kx16 15ns 512Kb DUAL PORT SRAM
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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