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PC87365 Datasheet(PDF) 168 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No. de pieza PC87365
Descripción Electrónicos  128-Pin LPC SuperI/O with System Hardware Monitoring
PDF  215 Pages
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Fabricante Electrónico  NSC [National Semiconductor (TI)]
Página de inicio  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87365 Datasheet(HTML) 168 Page - National Semiconductor (TI)

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9.0 Voltage Level Monitor (VLM) (Continued)
168
www.national.com
9.7.2
Measuring Out of Range Positive and Negative Voltages
Only voltages within the range of 0V to (2.45
±0.05)*V
REF 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 volt-
age dividers. (See Figure 32.)
9.7.3
Obtaining the Specified VLM/TMS Accuracy
To obtain the specified VLM/TMS accuracy, see Section 10.5.5 on page 183:
27.5
0.1
25
1
210
10
2220
30
7900
50
0.1
45
1
430
10
3350
30
11400
Table 50. Delay Setting Example
External
Elements
Delay Time
(ns)
RSOURCE
[K
Ω]
CP
[pF]
Figure 32. Measurement Out of Positive and Negative Voltages
R1
VIN (12V)
R2
AVI
R1
R2
AVI
VIN (-12V)
AVDD
AVSS
AVSS



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