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April 7, 2005

UL634H256

the end of the low pulse, however the STORE or RECALL will still be initiated.

v: 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 UL634H256 performs a

STORE or RECALL.

w: E must be used to clock in the address sequence for the software controlled STORE and RECALL cycles

ADDRESS 1

VALID

ADDRESS 6

(29)

(29)

(35)

(34)

ADDRESS 1

VALID

VALID

ADDRESS 6

(32)

(29)

(35)

(34)

(35)

(33)

(34)

(33)

(5)

VALID

High Impedance

High Impedance

Ai

E

DQi

Output

Ai

E

DQi

Output

(32)