U630H16P Datasheet, PDF (7/17 Pages) Simtek Corporation – HardStore 2K x 8 nvSRAM

Nonvolatile Memory Operations
No.
STORE Cycle Inhibit and
Automatic Power Up RECALL
Symbol
Alt.
IEC
24 Power Up RECALL Duration^{k, e}
Low Voltage Trigger Level
t_RESTORE
V_SWITCH
k: t_RESTORE starts from the time V_CC rises above V_SWITCH.
STORE Cycle Inhibit and Automatic Power Up RECALL
V_CC
5.0 V
V_SWITCH
Min.
4.0
U630H16P
Max.
Unit
650
μs
4.5
V
Power Up
RECALL
(24)
t_RESTORE
t
STORE inhibit
Hardware Mode Selection
E
W
G
NE
Mode
Power
Notes
L
H
L
L
Nonvolatile RECALL
Active
l
L
L
H
L
Nonvolatile STORE
I_CC2
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 V_CC exceeds V_SWITCH and takes t_RESTORE. V_CC must not drop below
V_SWITCH once it has been exceeded for the RECALL to function properly.
March 31, 2006
STK Control #ML0037
7
Rev 1.0