cym1840 Cypress Semiconductor Corporation., cym1840 Datasheet - Page 2

• Manufacturer Part Number: cym1840
• Description: 256k X 32 Static Ram Module
• Manufacturer: Cypress Semiconductor Corporation.

Maximum Ratings
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Storage Temperature ................................. –65 C to +150 C
Ambient Temperature with
Power Applied (PD) ...................................... –10 C to +85 C
lectrical Characteristics
Capacitance
AC Test Loads and Waveforms
V
V
V
V
I
I
I
I
I
C
C
C
Notes:
IX
OZ
CC
SB1
SB2
1.
2.
OH
OL
IH
IL
INA
INB
OUT
OUTPUT
Parameter
Equivalent to:
Parameter
A pull-up resistor to V
Tested initially and after any design or process changes that may affect these parameters.
INCLUDING
JIG AND
SCOPE
5V
OUTPUT
30 pF
[2]
Output HIGH Voltage
Output LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Input Load Current
Output Leakage Current
V
Automatic CS
Power-Down Current
Automatic CS
Power-Down Current
(a)
CC
R1 481
THÉ EVENIN EQUIVALENT
CC
Input Capacitance, Address Pins
Input Capacitance, I/O Pins
Output Capacitance
Operating Supply Current
on the CS input is required to keep the device deselected during V
125
Description
R2
255
Over the Operating Range
OUTPUT
Description
1.90V
[1]
[1]
INCLUDING
JIG AND
SCOPE
5V
5 pF
(b)
V
V
GND < V
GND < V
V
Max. V
Min. Duty Cycle = 100%
Max. V
V
R1 481
CC
CC
CC
IN
> V
= Min., I
= Min., I
= Max., I
CC
CC
CC
I
O
, CS
, CS
2
< V
- 0.3V or V
1838–3
< V
R2
255
Test Conditions
OH
OL
T
V
DC Voltage Applied to Outputs
in High Z State................................................–0.5V to +7.0V
DC Input Voltage ............................................–3.0V to +7.0V
Operating Range
OUT
CC
Commercial
X
X
A
CC
CC
= 8.0 mA
> V
> V
= 25 C, f = 1 MHz,
= –4.0 mA
, Output Disabled
= 5.0V
= 0 mA, CS
Range
IH
CC
Test Conditions
GND
,
IN
3.0V
- 0.3V,
CC
< 0.3V
< 5 ns
power-up, otherwise I
X
< V
IL
10%
Temperature
0 C to +70 C
Ambient
90%
ALL INPUT PULSES
SB
will exceed values given.
Min.
–0.5
–20
–50
2.4
2.2
CYM1840
Max.
100
30
30
Max.
1120
V
+20
+50
320
160
0.4
0.8
CYM1840
CC
5V
90%
V
Unit
10%
CC
1838–4
pF
pF
pF
< 5 ns
10%
Unit
mA
mA
mA
V
V
V
V
A
A