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7
April 7, 2005
U630H64
Nonvolatile Memory Operations
No.
STORE Cycle Inhibit and
Automatic Power Up RECALL
Symbol
Min.
Max.
Unit
Alt.
IEC
24
Power Up RECALL Durationk, e
tRESTORE
650
µs
Low Voltage Trigger Level
VSWITCH
4.0
4.5
V
k: tRESTORE starts from the time VCC rises above VSWITCH.
STORE Cycle Inhibit and Automatic Power Up RECALL
VCC
5.0 V
STORE inhibit
Power Up
VSWITCH
tRESTORE
RECALL
(24)
t
Mode Selection
E
W
G
NE
Mode
Power
Notes
L
H
L
L
Nonvolatile RECALL
Active
l
L
L
H
L
Nonvolatile STORE
ICC2
L
L
L
H
L
H
L
*
No operation
Active
* H or L
l:
An automatic RECALL also takes place at power up, starting when VCC exceeds VSWITCH and takes tRESTORE. VCC must not drop below
VSWITCH once it has been exceeded for the RECALL to function properly.
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