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STM32L072KB Folha de dados(PDF) 17 Page - STMicroelectronics

Nome de Peças STM32L072KB
Descrição Electrónicos  Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs
PDF  160 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L072KB Folha de dados(HTML) 17 Page - STMicroelectronics

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DS10689 Rev 5
17/160
STM32L072xx
Functional overview
36
Table 3. Functionalities depending on the operating power supply range
Operating power supply
range(1)
1. GPIO speed depends on VDD voltage range. Refer to Table 62: I/O AC characteristics for more information
about I/O speed.
Functionalities depending on the operating power supply
range
DAC and ADC
operation
Dynamic voltage
scaling range
USB
VDD = 1.65 to 1.71 V
ADC only, conversion
time up to 570 ksps
Range 2 or
range 3
Not functional
VDD = 1.71 to 1.8 V(2)
2. CPU frequency changes from initial to final must respect "fcpu initial <4*fcpu final". It must also respect 5
μs delay between two changes. For example to switch from 4.2 MHz to 32 MHz, you can switch from 4.2
MHz to 16 MHz, wait 5 μs, then switch from 16 MHz to 32 MHz.
ADC only, conversion
time up to 1.14 Msps
Range 1, range 2 or
range 3
Functional(3)
VDD = 1.8 to 2.0 V(2)
Conversion time up to
1.14 Msps
Range1, range 2 or
range 3
Functional(3)
VDD = 2.0 to 2.4 V
Conversion time up to
1.14 Msps
Range 1, range 2 or
range 3
Functional(3)
3. To be USB compliant from the I/O voltage standpoint, the minimum VDD_USB is 3.0 V.
VDD = 2.4 to 3.6 V
Conversion time up to
1.14 Msps
Range 1, range 2 or
range 3
Functional(3)
Table 4. CPU frequency range depending on dynamic voltage scaling
CPU frequency range
Dynamic voltage scaling range
16 MHz to 32 MHz (1ws)
32 kHz to 16 MHz (0ws)
Range 1
8 MHz to 16 MHz (1ws)
32 kHz to 8 MHz (0ws)
Range 2
32 kHz to 4.2 MHz (0ws)
Range 3



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