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STM32L151x8 Arkusz danych(PDF) 97 Page - STMicroelectronics

Numer części STM32L151x8
Szczegółowy opis  Ultra-low-power 32-bit MCU ARM®-based Cortex®-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC
PDF  133 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L151x8 Arkusz danych(HTML) 97 Page - STMicroelectronics

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STM32L151x6/8/B STM32L152x6/8/B
Electrical characteristics
104
Figure 28. Maximum dynamic current consumption on VREF+ supply pin during ADC
conversion
General PCB design guidelines
Power supply decoupling should be performed as shown in The 10 nF capacitors should be
ceramic (good quality). They should be placed as close as possible to the chip.
ADC clock
Sampling (n cycles)
Conversion (12 cycles)
Iref+
300µA
700µA
MS36686V1
Table 56. Maximum source impedance RAIN max(1)
Ts
(µs)
RAIN max (kOhm)
Ts (cycles)
fADC= 16 MHz(2)
Multiplexed channels
Direct channels
2.4 V < VDDA< 3.6 V 1.8 V < VDDA < 2.4 V 2.4 V < VDDA< 3.3 V 1.8 V < VDDA < 2.4 V
0.25
Not allowed
Not allowed
0.7
Not allowed
4
0.5625
0.8
Not allowed
2.0
1.0
9
1
2.0
0.8
4.0
3.0
16
1.5
3.0
1.8
6.0
4.5
24
3
6.8
4.0
15.0
10.0
48
6
15.0
10.0
30.0
20.0
96
12
32.0
25.0
50.0
40.0
192
24
50.0
50.0
50.0
50.0
384
1. Guaranteed by design.
2. Number of samples calculated for fADC = 16 MHz. For fADC = 8 and 4 MHz the number of sampling cycles can be
reduced with respect to the minimum sampling time Ts (us).



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