U635H64 Datasheet, PDF (9/13 Pages) List of Unclassifed Manufacturers – POWER STORE 8K X 8 NVSRAM

Software Controlled STORE/RECALL Cycle^{s, t, u, v} (E = HIGH after STORE initiation)
Ai
E
DQi
Output
t_cR (27)
ADDRESS 1
t_su(A)SR (31)
t_w(E)SR
(32)
(33) ^th(A)SR
High Impedance
VALID
t_{cR (27)}
ADDRESS 6
(31)
t_su(A)SR
t_h(A)SR
t_w(E)SR
(32)
(33)
t_dis(E)(5)
t_{d(E)S (29)} t_{d(E)R (30)}
VALID
t_{dis(E)SR (28)}
U635H64
Software Controlled STORE/RECALL Cycle^{s, t, u, v} (E = LOW after STORE initiation)
Ai
E
DQi
Output
t_cR (27)
ADDRESS 1
t_{su(A)SR (31)}
t_w(E)SR
(32)
(33) t_h(A)SR
High Impedance _VALID
ADDRESS 6
t_{h(A)SR (33)}
(31)
t_su(A)SR
t_{d(E)S (29)} t_{d(E)R (30)}
VALID
t_{dis(E)SR (28)}
u: 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 U635H64 performs a STORE
or RECALL.
v: E must be used to clock in the address sequence for the software controlled STORE and RECALL cycles.
April 7, 2005
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