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Si4438 データシート(PDF) 8 Page - Silicon Laboratories

部品番号 Si4438
部品情報  Low active power consumption
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メーカー  SILABS [Silicon Laboratories]
ホームページ  http://www.silabs.com
Logo SILABS - Silicon Laboratories

Si4438 データシート(HTML) 8 Page - Silicon Laboratories

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Si4438-C
8
Rev 1.0
Table 5. Auxiliary Block Specifications1
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Temperature Sensor
Sensitivity
TSS
4.5
ADC
Codes/
°C
Low Battery Detector
Resolution
LBDRES
—50
mV
Microcontroller Clock
Output Frequency Range2
FMC
Configurable to Fxtal or Fxtal
divided by 2, 3, 7.5, 10, 15, or
30 where Fxtal is the reference
XTAL frequency. In addition,
32.768 kHz is also supported.
32.768K
Fxtal
Hz
Temperature Sensor
Conversion
TEMPCT
Programmable setting
3
ms
XTAL Range3
XTALRange
25
32
MHz
30 MHz XTAL Start-Up Time
t30M
Using XTAL and board layout in
reference design. Start-up time
will vary with XTAL type and
board layout.
300
μs
30 MHz XTAL Cap
Resolution
30MRES
—70
fF
32 kHz XTAL Start-Up Time
t32k
2
sec
32 kHz Accuracy using
Internal RC Oscillator
32KRCRES
2500
ppm
POR Reset Time
tPOR
——
6
ms
Notes:
1. All minimum and maximum values are guaranteed across the recommended operating conditions of supply voltage and
from –40 to +85 °C unless otherwise stated. All typical values apply at VDD = 3.3 V and 25 °C unless otherwise stated.
2. Microcontroller clock frequency tested in production at 1 MHz, 30 MHz, 32 MHz, and 32.768 kHz. Other frequencies
tested in bench characterization.
3. XTAL Range tested in production using an external clock source (similar to using a TCXO).


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