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SC2200 Datasheet(PDF) 424 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # SC2200
Description  Thin Client On a Chip
PDF  433 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

SC2200 Datasheet(HTML) 424 Page - National Semiconductor (TI)

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424
Revision 3.0
Electrical Specifications (Continued)
8.3.15 Power-Up Sequencing
Figure 8-55. Power-Up Sequencing With PWRBTN# Timing Diagram
Table 8-43. Power-Up Sequence Using the Power Button Timing Parameters
Symbol
Parameter
Min
Max
Unit
Comments
t1
Voltage sequence
-10
10
ms
t2
PWRBTN# inactive after VSB or VSBL
applied, whichever is applied last
0
1
µs
PWRBTN#is aninput andmust
be powered by VSB.
t3
PWRBTN# active pulse width
16
4000
ms
If PWRBTN# max is exceeded,
ONCTL# will go inactive.
t4
ONCTL# inactive after VSB applied
0
1
ms
t5
Signal active after PWRBTN active
16
32
ms
t6
VCORE and VIO applied after ONCTL#
active
0
ms
System determines when VCORE
and VIO are applied, hence there
is no maximum constraint.
t7
POR# inactive after VCORE and VIO
applied
50
ms
POR# must not glitch during
active time.
t1
VSBL
VSB
VCORE
VIO
PWRBTN#
ONTCL#
PWRCNT[2:1]
POR#
t4
t2
t3
t1
t6
t5
t7



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