Datasheet

Electrical characteristics STM32L151x6/8/B, STM32L152x6/8/B
56/131 DocID17659 Rev 9
6.3.4 Supply current characteristics
The current consumption is a function of several parameters and factors such as the
operating voltage, ambient temperature, I/O pin loading, device software configuration,
operating frequencies, I/O pin switching rate, program location in memory and executed
binary code. The current consumption is measured as described in Figure 14: Current
consumption measurement scheme.
All Run-mode current consumption measurements given in this section are performed with a
reduced code that gives a consumption equivalent to Dhrystone 2.1 code.
Maximum current consumption
The MCU is placed under the following conditions:
• V
DD
= 3.6 V
• All I/O pins are in input mode with a static value at V
DD
or V
SS
(no load)
• All peripherals are disabled except when explicitly mentioned
• The Flash memory access time is adjusted depending on f
HCLK
frequency and voltage
range
• Prefetch and 64-bit access are enabled in configurations with 1 wait state
• When the peripherals are enabled f
APB1
= f
APB2
= f
AHB
• When f
HCLK
> 8 MHz, PLL is ON and PLL inputs are equal to HSI = 8 MHz (if internal
clock is used) or HSE = 8 MHz (if HSE bypass mode is used)
The parameters given in Table 17, Table 13 and Table 14 are derived from tests performed
under ambient temperature and V
DD
supply voltage conditions summarized in Table 13.