参数资料
型号: STM32L152C8U6D
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 32 MHz, RISC MICROCONTROLLER, QCC48
封装: 7 X 7 MM, 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-48
文件页数: 50/106页
文件大小: 1417K
代理商: STM32L152C8U6D
Electrical characteristics
STM32L151xx, STM32L152xx
Doc ID 17659 Rev 1
6.3.3
Embedded internal reference voltage
The parameters given in Table 12 are derived from tests performed under ambient
temperature and VDD supply voltage conditions summarized in Table 9.
Table 12.
Embedded internal reference voltage
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VREFINT out
Internal reference voltage
–40 °C < TJ < +105 °C
TBD
1.224
TBD
V
IREFINT
Internal reference current
consumption
1.4
TBD
A
TVREFINT
Internal reference startup time
2
TBD
ms
VVREF_MEAS
VDDA and VREF+ voltage during
VREFINT factory measure
Built-in ADC
2.99
3
3.01
V
AVREF_MEAS
Accuracy of factory-measured
VREF value
Including uncertainties
due to ADC and
VDDA/VREF+ values
±5
mV
VREFINT
Internal reference voltage spread
over the temperature range
VDD = 3 V ±10 mV
10
mV
TCoeff
Temperature coefficient
20
50
ppm/°C
ACoeff
Long-term stability
1000 hours, T= 25 °C
TBD
ppm
TS_vrefint
(1)
ADC sampling time when
reading the internal reference
voltage
510(2)
s
TADC_BUF
Startup time of reference voltage
buffer for ADC
TBD
s
IBUF_ADC
Consumption of reference
voltage buffer for ADC
13.5
TBD
A
IVREF_OUT
VREF_OUT output current(3)
1A
CVREF_OUT
VREF_OUT output load
50
pF
ILPBUF
Consumption of reference
voltage buffer for VREF_OUT
and COMP
730
TBD
nA
VREFINT_DIV1
1/4 reference voltage
25
%
VREFINT
VREFINT_DIV2
1/2 reference voltage
50
VREFINT_DIV3
3/4 reference voltage
75
1.
Shortest sampling time can be determined in the application by multiple iterations.
2.
Guaranteed by design, not tested in production.
3.
To guaranty less than 1% VREF_OUT deviation.
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