STK20C04-W45 Cypress Semiconductor Corp, STK20C04-W45 Datasheet - Page 7

• Manufacturer Part Number: STK20C04-W45
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

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

RECALL CYCLES #1, #2 & #3
Note p: Measured with W and NE both high, and G and E low.
Note q: Once t
Note r:
RECALL CYCLE #1: NE Controlled
RECALL CYCLE #2: E Controlled
RECALL CYCLE #3: G Controlled
March 2006
DQ (DATA OUT)
DQ (DATA OUT)
DQ (DATA OUT)
NO.
33
34
35
36
37
38
39
40
the RECALL initiation cycle.
If W is low at any point in which both E and NE are low and G is high, then a STORE cycle will be initiated instead of a RECALL.
t
t
t
t
t
t
t
NLQX
NLNH
WHNL
ELNL
NLQZ
RESTORE
GLNL
NE
NE
NE
W
W
W
G
G
G
E
E
E
#1
p
q
NLNH
has been satisfied by NE, G, W and E, the RECALL cycle is completed automatically. Any of NE, G or E may be used to terminate
SYMBOLS
t
t
t
t
t
t
ELQXR
ELNHR
NLEL
GLEL
WHEL
GLEL
#2
t
ELNL
38
t
t
t
t
t
GLQXR
GLNH
NLGL
WHGL
ELGL
t
WHNL
HIGH IMPEDANCE
HIGH IMPEDANCE
37
#3
t
t
ELGL
GLEL
t
36
38
GLNL
t
t
36
WHGL
WHEL
37
37
t
t
NLEL
NLGL
35
35
RECALL Cycle Time
RECALL Initiation Cycle Time
NE Set-up
Output Enable Set-up
Write Enable Set-up
Chip Enable Set-up
NE Fall to Outputs Inactive
Power-up RECALL Duration
n
n, r
n
t
NLQZ
39
7
PARAMETER
t
NLNH
34
t
Document Control # ML0001 rev 0.2
ELNHR
t
GLNH
34
34
HIGH IMPEDANCE
t
NLQX
33
t
t
ELQXR
GLQXR
33
33
(V
CC
MIN
20
0
0
0
0
= 5.0V
STK20C04
MAX
550
20
20
±
10%)
UNITS
μs
ns
ns
ns
ns
ns
ns
μs