參數(shù)資料
型號: XE8000EV104
廠商: Semtech
文件頁數(shù): 61/156頁
文件大?。?/td> 0K
描述: EVAL BOARD FOR XE8805AMI028LF
標(biāo)準(zhǔn)包裝: 1
類型: MCU
適用于相關(guān)產(chǎn)品: XE88LC05AMI028
所含物品: 完全組裝的評估板
Semtech 2006
www.semtech.com
21-3
XE8805/05A
symbol
description
min
typ
max
unit
comments
trimming values:
Note 1
VldRange
VldTune
1.53
0
000
1.44
0
001
1.36
0
010
1.29
0
011
1.22
0
100
1.16
0
101
1.11
0
110
1.06
0
111
3.06
1
000
2.88
1
001
2.72
1
010
2.57
1
011
2.44
1
100
2.33
1
101
2.22
1
110
Vth
Threshold voltage
2.13
V
1
111
TEOM
duration of
measurement
2.0
2.5
ms
Note 2
TPW
Minimum pulse width
detected
875
1350
us
Note 2
Table 221-4: Voltage level detector operation
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.
Not
Recommended
for
New
Designs
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