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STM32L031C6 Datasheet(PDF) 17 Page - STMicroelectronics

Part # STM32L031C6
Description  Access line ultra-low-power 32-bit MCU ARM-based Cortex-M0, up to 32KB Flash, 8KB SRAM, 1KB EEPROM, ADC
PDF  118 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM32L031C6 Datasheet(HTML) 17 Page - STMicroelectronics

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DocID027063 Rev 4
17/118
STM32L031x4/6
Functional overview
33
Table 3. Functionalities depending on the operating power supply range
Operating power supply
range
Functionalities depending on the operating power supply range
ADC operation
Dynamic voltage
scaling range
I/O operation
VDD = 1.65 to 1.71 V
Conversion time up
to 570 ksps
Range 2 or
range 3
Degraded speed
performance
VDD = 1.71 to 2.0 V(1)
1. CPU frequency changes from initial to final must respect the condition: fCPU initial <4fCPU initial. 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.
Conversion time up
to 1.14 Msps
Range 1, range 2 or
range 3
Degraded speed
performance
VDD = 2.0 to 2.4 V
Conversion time up
to 1.14 Msps
Range 1, range 2 or
range 3
Full speed operation
VDD = 2.4 to 3.6 V
Conversion time up
to 1.14 Msps
Range 1, range 2 or
range 3
Full speed operation
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
Table 5. Functionalities depending on the working mode
(from Run/active down to standby) (1)
IPs
Run/Active
Sleep
Low-
power
run
Low-
power
sleep
Stop
Standby
Wakeup
capability
Wakeup
capability
CPU
Y
--
Y
--
--
--
Flash memory
O
O
O
O
--
--
RAM
Y
Y
Y
Y
Y
--
Backup registers
Y
Y
Y
Y
Y
Y
EEPROM
O
O
O
O
--
--
Brown-out reset
(BOR)
OO
O
O
O
O
O
O
DMA
O
O
O
O
--
--
Programmable
Voltage Detector
(PVD)
OO
O
O
O
O
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