CY62256-55 CYPRESS [Cypress Semiconductor], CY62256-55 Datasheet - Page 4

• Manufacturer Part Number: CY62256-55
• Description: 256K (32K x 8) Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-05248 Rev. *C
AC Test Loads and Waveforms
Data Retention Characteristics
Data Retention Waveform
Notes:
Thermal Resistance
OUTPUT
6.
Thermal Resistance
(Junction to Ambient)
Thermal Resistance
(Junction to Case)
V
I
t
t
CCDR
CDR
R
DR
[5]
Parameter
No input may exceed V
INCLUDING
[5]
5V
JIG AND
SCOPE
V
Description
100 pF
CE
CC
R1 1800 Ω
V
Data Retention Current
Chip Deselect to Data Retention Time
Operation Recovery Time
[5]
(a)
CC
[5]
CC
for Data Retention
+ 0.5V.
R2
990Ω
Still Air, soldered on a 4.25 x 1.125
inch, 4-layer printed circuit board
Description
OUTPUT
INCLUDING
Test Conditions
5V
Equivalent to:
JIG AND
SCOPE
t
CDR
3.0V
5 pF
L
LL
LL - Ind’l
LL - Auto
OUTPUT
(b)
R1 1800 Ω
THÉ VENIN EQUIVALENT
V
V
DATA RETENTION MODE
R2
990Ω
CC
IN
> V
= 3.0V, CE > V
CC
Symbol
Conditions
V
639Ω
Θ
DR
Θ
− 0.3V, or V
JA
JC
> 2V
CC
GND
3.0V
75.61
43.12
[6]
DIP
IN
− 0.3V,
< 5 ns
1.77V
< 0.3V
10%
SOIC
76.56
36.07
Min.
2.0
t
RC
0
ALL INPUT PULSES
TSOP
93.89
24.64
90%
3.0V
t
R
Typ.
0.1
0.1
0.1
2
RTSOP
[2]
93.89
24.64
Max.
50
10
10
CY62256
5
90%
Page 4 of 12
10%
°C/W
°C/W
Unit
< 5 ns
Unit
µA
µA
µA
µA
ns
ns
V