stk16c88-45i Simtek Corporation, stk16c88-45i Datasheet - Page 7

• Manufacturer Part Number: stk16c88-45i
• Description: 32kx8 Autostore+ Nvsram
• Manufacturer: Simtek Corporation

Document Control #ML0018 Rev 2.0
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 on the falling edge of E controlled READs without involving G (double clocking will abort the sequence).
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
NO.
26
27
28
29
30
31
ADDRESS
DQ (DATA
E
L
L
Jan, 2008
SYMBOLS
The six consecutive addresses must be in the order listed. W must be high during all six consecutive E controlled cycles to enable a nonvola-
tile cycle.
See application note: MA0002 http://www.simtek.com/attachments/AppNote02.pdf.
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
g, n
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
t
- A
3C1F
0FC0
3C1F
0E38
31C7
03E0
303F
0E38
31C7
03E0
303F
0C63
AVAV
26
0
(hex)
t
ELEH
DATA VALID
28
t
ELAX
29
PARAMETER
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
7
ADDRESS #6
t
AVAV
26
o
DATA VALID
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
STK16C88-25
HIGH IMPEDANCE
25
20
20
0
/
t
RECALL
30
MAX
20
10
(V
CC
MIN
STK16C88-45
= 5.0V
45
30
20
0
NOTES
STK16C88
l, m
l, m
MAX
20
10
±
10%)
UNITS
ms
ns
ns
ns
ns
μ s