STK12C68-M

4-58

28

t

AVAV

t

RC

STORE/RECALL Initiation Cycle Time

35

45

55

ns

29

t

ELQZ

p

Chip Enable to Output Inactive

85

85

85

ns

30

Address Set-up to Chip Enable

0

0

0

ns

31

q,r

Chip Enable Pulse Width

25

35

45

ns

32

Chip Disable to Address Change

0

0

0

ns

ADDRESS

E

DQ(Data Out)

VALID

ADDRESS #6

ADDRESS #1

VALID

HIGH IMPEDANCE

28

28

30

31

32

23

22

29

ADDRESS #2

Std.

Alt.

MIN

MAX

MIN

MAX

MIN

MAX

NO.

PARAMETER

UNITS

SYMBOLS

STK12C68-40M

STK12C68-45M

STK12C68-55M

Note p: Once the software

STORE or RECALL cycle is initiated, it completes automatically, ignoring all inputs.

Note q: Noise on the E pin may trigger multiple read cycles from the same address and abort the address sequence.

of the low pulse, however the

STORE or RECALL will still be initiated.

Note s: W must be HIGH when E is LOW during the address sequence in order to initiate a nonvolatile cycle. G may be either HIGH or LOW throughout.

Addresses #1 through #6 are found in the MODE SELECTION table. Address #6 determines whether the STK12C68-M performs a

STORE or RECALL.

Note t:

E must be used to clock in the address sequence for the Software

STORE and RECALL cycles.

SOFTWARE STORE/RECALL CYCLE

d