STM32L152C8T6 Datasheet, PDF (15/131 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC

STM32L151x6/8/B, STM32L152x6/8/B
Functional overview
Table 3. Functionalities depending on the operating power supply range (continued)
Functionalities depending on the operating power supply range
Operating power
supply range
DAC and ADC
operation
USB
Dynamic voltage
scaling range
I/O operation
V_DD = 2.0 to 2.4 V
Conversion time
up to 500 Ksps
Functional⁽²⁾
Range 1,
Range 2 or
Range 3
Full speed operation
V_DD = 2.4 to 3.6 V
Conversion time
up to 1 Msps
Functional⁽²⁾
Range 1,
Range 2 or
Range 3
Full speed operation
1.
The CPU
drop due
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initial
must
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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.
2. Should be USB compliant from I/O voltage standpoint, the minimum V_DD is 3.0 V.
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)
8 MHz to 16 MHz (1ws)
32 kHz to 8 MHz (0ws)
2.1 MHz to 4.2 MHz (1ws)
32 kHz to 2.1 MHz (0ws)
Range 1
Range 2
Range 3
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