STK14C88-3WF45ITR データシートの表示（PDF） - Simtek Corporation

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STK14C88-3WF45ITR

32Kx8 AutoStore nvSRAM

Simtek Corporation 

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

n, r, s, t

n, r, s, t

SOFTWARE-CONTROLLED STORE/RECALL CYCLEv (VCC = 3V - 3.6V)e

SYMBOLS

NO.

Standard Alternate

PARAMETER

STK14C88-3-

35

MIN MAX

STK14C88-3-

45

UNITS NOTES

MIN MAX

33

tAVAV

tRC

34

tAVEL

tAS

35

tELEH

tCW

36

tELAX

37

tRECALL

STORE/RECALL Initiation Cycle Time

Address Set-up Time

Clock Pulse Width

Address Hold Time

RECALL Duration

35

45

ns

n

0

0

ns

u, v

25

30

ns

u,v

20

20

ns

u, v

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 E controlled cycles to enable a nonvola-

tile 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 on the falling edge of E controlled READs without involving G (double clocking will abort the sequence).

See application note:MA0002 http://www.simtek.com/attachments/AppNote02.pdf.

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.

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

Document Control #ML0015 Rev 2.0

9

Feb, 2008

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