U630H64 Просмотр технического описания (PDF) - Zentrum Mikroelektronik Dresden AG
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U630H64 Datasheet PDF : 14 Pages
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NONVOLATILE MEMORY OPERATIONS
No.
STORE CYCLE INHIBIT and
AUTOMATIC POWER UP RECALL
24 Power Up RECALL Durationk, e
Low Voltage Trigger Level
Symbol
Alt.
tRESTORE
VSWITCH
IEC
k: tRESTORE starts from the time VCC rises above VSWITCH.
STORE CYCLE INHIBIT and AUTOMATIC POWER UP RECALL
Min.
4.0
VCC
5.0 V
VSWITCH AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
U630H64
Max.
650
4.5
Unit
µs
V
Power Up
RECALL
24
tRESTORE
t
STORE inhibit
MODE SELECTION
E
W
L
H
L
L
L
L
L
H
* H or L
G
NE
Mode
Power
Notes
L
L
Nonvolatile RECALL
Active
l
H
L
Nonvolatile STORE
ICC2
L
H
L
No operation
Active
*
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.
December 12, 1997
7
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