STK16C88 Simtek, STK16C88 Datasheet - Page 6

• Manufacturer Part Number: STK16C88
• Description: CMOS Nonvolatile Static RAM
• Manufacturer: Simtek

STK16C88
SOFTWARE STORE/RECALL MODE SELECTION
Note l:
Note m: While there are 15 addresses on the STK16C88, only the lower 14 are used to control software modes.
SOFTWARE STORE/RECALL CYCLE
Note n: The software sequence is clocked with E controlled reads.
Note o: The six consecutive addresses must be in the order listed in the Software STORE/RECALL Mode Selection Table: (0E38, 31C7, 03E0, 3C1F,
SOFTWARE STORE/RECALL CYCLE: E Controlled
February 2002
NO.
26
27
28
29
30
31
ADDRESS
E
L
L
DQ (DATA
SYMBOLS
The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle.
303F, 0FC0) for a STORE cycle or (0E38, 31C7, 03E0, 3C1F, 303F, 0C63) for a RECALL cycle. W must be high during all six consecutive
cycles.
t
t
t
t
t
t
AVAV
AVEL
ELEH
ELAX
RECALL
STORE
E
n
n
g, n
W
H
H
STORE/RECALL Initiation Cycle Time
Address Set-up Time
Clock Pulse Width
Address Hold Time
RECALL Cycle Duration
STORE Cycle Duration
t
AVEL
27
ADDRESS #1
A
13
- A
t
31C7
3C1F
0FC0
31C7
3C1F
0C63
0E38
03E0
303F
0E38
03E0
303F
AVAV
26
0
(hex)
t
PARAMETER
ELEH
DATA VALID
28
t
ELAX
29
Nonvolatile RECALL
Nonvolatile STORE
n, o
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
MODE
5-70
ADDRESS #6
MIN
STK16C88-25
25
20
20
0
t
AVAV
26
o
DATA VALID
MAX
20
10
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
t
STORE
I/O
31
MIN
STK16C88-35
35
25
20
0
HIGH IMPEDANCE
/
t
RECALL
30
MAX
20
10
(V
CC
MIN
STK16C88-45
45
30
20
0
= 5.0V
NOTES
l, m
l, m
MAX
20
10
10%)
UNITS
ms
ns
ns
ns
ns
s