STK14C88-LF25I データシートの表示（PDF） - Cypress Semiconductor
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STK14C88-LF25I Datasheet PDF : 20 Pages
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STK14C88
Software STORE/RECALL Mode Selection
E
W
A13 - A0 (hex)
L
H
0E38
31C7
03E0
3C1F
303F
Mode
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
I/O
Output Data
Output Data
Output Data
Output Data
Output Data
POWER
Active
Notes
13, 17, 18, 19
0FC0
Nonvolatile STORE
Output High Z
ICC2
L
H
0E38
31C7
03E0
3C1F
303F
0C63
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Read SRAM
Nonvolatile RECALL
Software-Controlled STORE/RECALL Cycle
Output Data
Output Data
s Output Data
n Output Data
Output Data
Desig Output High Z
Active
13, 17, 18, 19
NO.
33
34
35
36
37
Symbols
w Standard Alt.
e tAVAV
tRC
N tAVEL
tAS
r tELEH
tCW
fo tELAX
tRECALL
Parameter
STORE/RECALL Initiation Cycle Time
Address Setup Time
Clock Pulse Width
Address Hold Time
RECALL Duration
STK14C88-25 STK14C88-35 STK14C88-45
Unit
Min Max Min Max Min Max
35
–
45
–
55
– ns
0
–
0
–
0
– ns
25
–
30
–
35
– ns
20
–
20
–
20
– ns
–
20
–
20
–
20 s
ed Figure 10. E Controlled Software STORE/RECALL Cycle [21]
end ADDRESS
mm E
33
tAVAV
ADDRESS #1
34
tAVEL
35
tELEH
33
tAVAV
ADDRESS #6
Not Reco DQ (DATA
36
tELAX
DATA VALID
/ 29
37
tSTORE tRECALL
DATA VALID
HIGH IMPEDANCE
Notes
13
20, 21
20, 21
20, 21
–
Notes
17. The six consecutive addresses must be in the order listed. W must be high during all six consecutive E controlled cycles to enable a nonvolatile cycle.
18. While there are 15 addresses on the STK14C88, only the lower 14 are used to control software modes.
19. I/O state assumes G < VIL. Activation of nonvolatile cycles does not depend on state of G.
20. The software sequence is clocked on the falling edge of E controlled reads without involving G (double clocking aborts the sequence).
21. The six consecutive addresses must be in the order listed in the Software STORE/RECALL 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.
Document Number: 001-52038 Rev. *C
Page 10 of 20
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