XE8000EV104 Semtech, XE8000EV104 Datasheet - Page 153
XE8000EV104
Manufacturer Part Number
XE8000EV104
Description
EVAL BOARD FOR XE8805AMI028LF
Manufacturer
Semtech
Type
MCUr
Specifications of XE8000EV104
Contents
Fully Assembled Evaluation Board
For Use With/related Products
XE88LC05AMI028
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Note 1: absolute precision of the threshold voltage is ±10%.
Note 2: this timing is respected in case the internal RC or crystal oscillators are enabled
To start the voltage level detection, the user sets bit VldEn. The measurement is started.
After 2ms, the bit VldValid is set to indicate that the measurement results are valid. From that time on, as long as
the VLD is enabled, a maskable interrupt request is sent if the voltage level falls below the threshold. One can also
poll the VLD and monitor the actual measurement result by reading the VldResult bit of the RegVldStat. This
result is only valid as long as the VldValid bit is ‘1’.
An interrupt is generated on each rising edge of VldResult.
© Semtech 2006
symbol
T
T
Vth
EOM
PW
Minimum pulse width
Threshold voltage
description
measurement
Table 221-4: Voltage level detector operation
duration of
detected
min
21-3
Note 1
1.53
1.44
1.36
1.29
1.22
1.16
1.11
1.06
3.06
2.88
2.72
2.57
2.44
2.33
2.22
2.13
typ
875
2.0
1350
max
2.5
unit
ms
us
V
VldRange
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
trimming values:
comments
Note 2
Note 2
XE8805/05A
VldTune
www.semtech.com
000
001
010
011
100
101
110
111
000
001
010
011
100
101
110
111
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