STK22C48-W45 Cypress Semiconductor Corp, STK22C48-W45 Datasheet - Page 6

• 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

STK22C48
AutoStore™ / POWER-UP RECALL
Note s: t
Note t:
AutoStore™ / POWER-UP RECALL
July 1999
POWER-UP RECALL
NO.
27
28
29
30
31
32
DQ (DATA OUT)
HSB is asserted low for 1
be released and no STORE will take place.
AutoStore
RESTORE
V
V
Standard
t
t
t
t
V
V
SWITCH
RESTORE
STORE
VSBL
DELAY
31
32
RESET
SWITCH
RESET
HSB
TM
W
starts from the time V
V
SYMBOLS
CC
POWER-UP
Alternate
t
t
RECALL
t
HLHZ
BLQZ
RESTORE
µs
27
when V
CC
rises above V
CAP
(NO SRAM WRITES)
(V
Power-up RECALL Duration
STORE Cycle Duration
Low Voltage Trigger (V
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
Low Voltage Reset Level
BELOW V
CC
drops through V
BROWN OUT
NO RECALL
NO STORE
DID NOT GO
SWITCH
RESET
.
SWITCH
)
SWITCH
3-26
. If an SRAM write has not taken place since the last nonvolatile cycle, HSB will
PARAMETER
) to HSB Low
(V
BELOW V
CC
BROWN OUT
NO RECALL
AutoStore™
t
VSBL
29
DID NOT GO
t
DELAY
30
RESET
)
(V
ABOVE V
RECALL WHEN
V
BROWN OUT
CC
CC
AutoStore™
t
MIN
STORE
4.0
STK22C48
1
28
RETURNS
= 5.0V ± 10%)
SWITCH
MAX
550
300
4.5
3.9
10
UNITS
ms
µs
µs
ns
V
V
NOTES
p, q, t
m
b, f
p
s