STK14C88-3R55I Ver la hoja de datos (PDF) - Simtek Corporation
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STK14C88-3R55I Datasheet PDF : 13 Pages
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STK14C88-3
SOFTWARE STORE/RECALL MODE SELECTION
E
W
L
H
L
H
A13 - A0 (hex)
0E38
31C7
03E0
3C1F
303F
0FC0
0E38
31C7
03E0
3C1F
303F
0C63
MODE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile STORE
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile RECALL
I/O
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
Output Data
Output Data
Output Data
Output Data
Output Data
Output High Z
POWER
Active
lCC2
Active
NOTES
r, s, t
r, s, t
SOFTWARE-CONTROLLED STORE/RECALL CYCLEv
(VCC = 3.0V-3.6V)e
SYMBOLS
NO.
Standard Alternate
PARAMETER
STK14C88-3-25 STK14C88-3-35 STK14C88-3-45
UNITS NOTES
MIN MAX MIN MAX MIN MAX
33
tAVAV
tRC
STORE/RECALL Initiation Cycle Time
35
45
55
ns
n
34
tAVEL
tAS
Address Set-up Time
0
0
0
ns
u
35
tELEH
tCW
Clock Pulse Width
25
30
45
ns
u
36
tELAX
Address Hold Time
20
20
20
ns
u
37
tRECALL
RECALL Duration
20
20
20
µs
Note r:
Note s:
Note t:
Note u:
Note v:
The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle.
While there are 15 addresses on the STK14C88-3, only the lower 14 are used to control software modes.
I/O state assumes G < VIL. Activation of nonvolatile cycles does not depend on state of G.
The software sequence is clocked with E controlled READs.
The six consecutive addresses must be in the order listed in the Hardware Mode Selection Table: (0E38, 31C7, 03E0, 3C1F, 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.
SOFTWARE STORE/RECALL CYCLE: E CONTROLLEDv
ADDRESS
33
tAVAV
ADDRESS #1
33
tAVAV
ADDRESS #6
34
tAVEL
35
tELEH
E
DQ (DATA
36
tELAX
DATA VALID
/ 28
37
tSTORE tRECALL
DATA VALID
HIGH IMPEDANCE
November 2003
7 Document Control # ML0015 rev 0.3
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