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STM8AL3188TCX bảng dữ liệu(PDF) 104 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Automotive 8-bit ultra-low-power MCU, 64 Kbyte Flash, RTC, LCD, data EEPROM, timers, USARTs, I2C, SPIs, ADC, DAC, COMPs
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STM8AL3188TCX bảng dữ liệu(HTML) 104 Page - STMicroelectronics

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Electrical parameters
STM8AL318x STM8AL3L8x
104/131
DocID027179 Rev 6
9.3.10
Embedded reference voltage
In the following table, data are based on characterization results, not tested in production,
unless otherwise specified.
Table 49. Reference voltage characteristics
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
IREFINT
Internal reference voltage
consumption
-
-
1.4
-
µA
TS_VREFINT(1)(2)
ADC sampling time when reading the
internal reference voltage
--
5
10
µs
IBUF(1)
Internal reference voltage buffer
consumption (used for ADC)
-
-
13.5
25
µA
VREFINT out
Reference voltage output
-
1.202
(3)
1.224
1.242
(3)
V
ILPBUF(1)
Internal reference voltage low-power
buffer consumption (used for
comparators or output)
-
-
730
1200
nA
IREFOUT(1)(4)
Buffer output current
-
-
-
1
µA
CREFOUT
Reference voltage output load
-
-
-
50
pF
tVREFINT(1)
Internal reference voltage startup
time
--
2
3
ms
tBUFEN(1)(2)
Internal reference voltage buffer
startup time once enabled
--
-
10
µs
ACCVREFINT(5)
Accuracy of VREFINT stored in the
VREFINT_Factory_CONV byte
--
-
± 5
mV
STABVREFINT
Stability of VREFINT over temperature -40 °C ≤TA ≤ 125 °C
-
20
50
ppm/°C
Stability of VREFINT over temperature
0 °C
≤TA ≤ 50 °C
-
-
20
ppm/°C
STABVREFINT Stability of VREFINT after 1000 hours
-
-
-
TBD
ppm
1. Guaranteed by design.
2. Defined when ADC output reaches its final value ±1/2LSB
3. Tested in production at VDD = 3 V ±10 mV.
4. To guarantee less than 1%
VREFOUT deviation
5. Measured at VDD = 3 V ±10 mV. This value takes into account VDD accuracy and ADC conversion accuracy.



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