STK20C04-W45 Cypress Semiconductor Corp, STK20C04-W45 Datasheet - Page 5
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STK20C04-W45
Manufacturer Part Number
STK20C04-W45
Description
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Datasheet
1.STK20C04-W45.pdf
(12 pages)
Specifications of STK20C04-W45
Word Size
8b
Organization
512x8
Density
4Kb
Interface Type
Parallel
Access Time (max)
45ns
Operating Supply Voltage (typ)
5V
Package Type
PDIP
Operating Temperature Classification
Commercial
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temp Range
0C to 70C
Pin Count
28
Mounting
Through Hole
Supply Current
65mA
Lead Free Status / RoHS Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STK20C04-W45I
Manufacturer:
DIODES
Quantity:
46 000
MODE SELECTION
Note k: An automatic RECALL takes place at power up, starting when V
STORE CYCLES #1 & #2
Note l:
Note m: Once t
Note n: If E is low for any period of time in which W is high while G and NE are low, then a RECALL cycle may be initiated.
STORE CYCLE #1: W Controlled
STORE CYCLE #2: E Controlled
DQ (DATA OUT)
DQ (DATA OUT)
March 2006
NO.
22
23
24
25
26
27
28
E
H
L
L
L
L
L
L
Measured with W and NE both returned high, and G returned low. STORE cycles are inhibited below 4.0V.
the STORE initiation cycle.
t
t
t
t
t
WLQX
WLNH
NLWL
ELWL
GHNL
NE
NE
W
W
G
G
E
E
#1
l
m
WC
has been satisfied by NE, G, W and E, the STORE cycle is completed automatically. Any of NE, G, W or E may be used to terminate
SYMBOLS
W
H
H
H
t
t
t
t
t
X
L
L
L
ELQX
ELNH
GHEL
NLEL
WLEL
#2
HIGH IMPEDANCE
t
GHNL
24
t
t
t
t
HIGH IMPEDANCE
STORE
WC
ELWL
GHEL
27
25
Alt.
G
X
X
H
H
L
L
L
t
WLEL
28
t
NLEL
26
t
NLWL
26
STORE Cycle Time
STORE Initiation Cycle Time
Output Disable Set-up to NE Fall
Output Disable Set-up to E Fall
NE Set-up
Chip Enable Set-up
Write Enable Set-up
n
n
NE
X
H
H
L
L
L
X
CC
5
exceeds 4.25V and taking t
PARAMETER
t
t
ELNH
WLNH
23
23
Nonvolatile RECALL
Document Control # ML0001 rev 0.2
Nonvolatile STORE
No Operation
Not Selected
Read SRAM
Write SRAM
MODE
t
t
ELQX
WLQX
22
22
RESTORE
k
.
(V
CC
MIN
20
0
0
0
0
0
= 5.0V
STK20C04
MAX
POWER
Standby
10
Active
Active
Active
Active
I
CC 2
±
10%)
UNITS
ms
ns
ns
ns
ns
ns
ns