STK22C48-W45 Cypress Semiconductor Corp, STK22C48-W45 Datasheet - Page 5

• Manufacturer Part Number: STK22C48-W45
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK22C48-W45

• Word Size: 8b
• Organization: 2Kx8
• Density: 16Kb
• 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

HARDWARE MODE SELECTION
Note n: HSB STORE operation occurs only if an SRAM write has been done since the last nonvolatile cycle. After the STORE (if any) completes, the
Note o: I/O state assumes G < V
HARDWARE STORE CYCLE
Note p: E and G low for output behavior.
Note q: E and G low and W high for output behavior.
Note r:
HARDWARE STORE CYCLE
July 1999
DQ (DATA OUT)
NO.
22
23
24
25
26
E
H
L
L
X
HSB (OUT)
HSB (IN)
part will go into standby mode, inhibiting all operations until HSB rises.
t
RECOVER
Standard
t
t
t
t
t
STORE
DELAY
RECOVER
HLHX
HLBL
W
X
H
L
X
is only applicable after t
SYMBOLS
HSB
H
H
H
L
Alternate
t
t
t
HIGH IMPEDANCE
HLHZ
HLQZ
HHQX
IL
. Activation of nonvolatile cycles does not depend on state of G.
A
12
DATA VALID
- A
STORE
X
X
X
X
0
t
HLHX
STORE Cycle Duration
Time Allowed to Complete SRAM Cycle
Hardware STORE High to Inhibit Off
Hardware STORE Pulse Width
Hardware STORE Low to Store Busy
25
(hex)
t
HLBL
26
is complete.
t
DELAY
23
Nonvolatile
Not Selected
Read SRAM
Write SRAM
3-25
PARAMETER
MODE
t
STORE
22
STORE
Output High Z
Output High Z
Output Data
Input Data
I/O
t
RECOVER
24
(V
CC
MIN
15
STK22C48
1
= 5.0V ± 10%)
POWER
Standby
Active
Active
l
CC 2
MAX
700
300
10
STK22C48
HIGH IMPEDANCE
UNITS NOTES
ms
µs
ns
ns
ns
DATA VALID
NOTES
o
n
p, r
j, p
j, q
b, f