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PC87366 Folha de dados(PDF) 194 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças PC87366
Descrição Electrónicos  128-Pin LPC SuperI/O with System Hardware Monitoring, MIDI and Game Ports
PDF  240 Pages
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87366 Folha de dados(HTML) 194 Page - National Semiconductor (TI)

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11.0 Voltage Level Monitor (VLM) (Continued)
194
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11.7.2
Measuring Out of Range Positive and Negative Voltages
Only voltages within the range of 0V to 2.45*VREF can be measured by the module. To measure voltages out of this range,
any of the external measurement pins can be used, with the addition of external resistors that should be used as voltage
dividers. (See Figure 40.)
Table 52. Delay Setting Example
External
Elements
Delay Time
(nS)
RSOURCE
[K
Ω]
CP
[pF]
5
0.1
15
1
110
10
900
30
3200
27.5
0.1
25
1
210
10
2220
30
7900
50
0.1
45
1
430
10
3350
30
11400
Figure 40. Measurement of Positive and Negative Voltages
R1
VIN (12V)
R2
AVI
R1
R2
AVI
VIN (-12V)
AVDD
AVSS
AVSS



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