STK14C88-M Simtek, STK14C88-M Datasheet - Page 5

• Manufacturer Part Number: STK14C88-M
• Description: 32K x 8 AUTOSTORE nvSRAM QUANTUM TRAP CMOS NONVOLATILE STATIC RAM
• Manufacturer: Simtek

HARDWARE MODE SELECTION
Note m: HSB store operation occurs only if an SRAM WRITE has been done since the last nonvolatile cycle. After the store (if any) completes, the part
Note n: The six consecutive addresses must be in order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle.
Note o: While there are 15 addresses on the STK14C88-M, only the lower 14 are used to control software modes.
Note p: I/O state assumes G < V
HARDWARE STORE CYCLE
Note q: E and G low and W high for output behavior.
Note r:
HARDWARE STORE CYCLE
April 1999
DQ (DATA OUT)
NO.
22
23
24
25
26
E
H
X
L
L
L
L
HSB (OUT)
HSB (IN)
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
H
H
H
X
L
X
is only applicable after t
SYMBOLS
HSB
H
H
H
H
H
L
HIGH IMPEDANCE
Alternate
t
t
t
HLHZ
HLQZ
HHQX
IL
. Activation of nonvolatile cycles does not depend on state of G.
A
13
DATA VALID
- A
31C7
3C1F
0FC0
31C7
3C1F
0C63
STORE
0E38
03E0
303F
0E38
03E0
303F
t
HLHX
X
X
X
X
0
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
t
is complete.
DELAY
23
Nonvolatile
Nonvolatile
Nonvolatile
Not Selected
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Write SRAM
5-47
PARAMETER
MODE
t
STORE
22
RECALL
STORE
STORE
Output High Z
Output High Z
Output High Z
Output High Z
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Output Data
Input Data
I/O
t
RECOVER
24
(V
STK14C88-M
MIN
20
CC
1
POWER
Standby
Active
Active
Active
Active
= 5.0V
STK14C88-M
l
l
CC 2
CC 2
MAX
700
300
10
HIGH IMPEDANCE
UNITS NOTES
ms
ns
ns
ns
DATA VALID
s
10%)
NOTES
n, o, p
n, o, p
m
p
i, q
i, q
q, r
e