Datasheet

Functional overview STM32L010F4/K4
16/91 DS12323 Rev 2
3.2 Interconnect matrix
Several peripherals are directly interconnected. This allows autonomous communication
between peripherals, thus saving CPU resources and power consumption. In addition,
these hardware connections allow fast and predictable latency.
Depending on peripherals, these interconnections can operate in Run, Sleep, Low-power
run, Low-power sleep and Stop modes.
Consumption
V
DD
=1.8 to 3.6 V (typ)
Down to
140 µA/MHz
(from Flash
memory)
Down to
37 µA/MHz
(from Flash
memory)
Down
to 8 µA
Down
to
4.5 µA
0.29 µA (no
RTC) V
DD
=1.8 V
0.1 µA (no RTC)
V
DD
=1.8 V
0.54 µA (with
RTC) V
DD
=1.8 V
0.41 µA (with RTC)
V
DD
=1.8 V
0.34 µA (no
RTC) V
DD
=3.0 V
0.23 µA (no RTC)
V
DD
=3.0 V
0.67 µA (with
RTC) V
DD
=3.0 V
0.53 µA (with RTC)
V
DD
=3.0 V
1. Legend:
“Y” = Yes (enable).
“O” = Optional (can be enabled/disabled by software)
“-” = Not available
2. The consumption values given in this table are preliminary data given for indication. They are subject to slight changes.
3. Some peripherals with wakeup from Stop capability can request HSI to be enabled. In this case, HSI is woken up by the
peripheral, and only feeds the peripheral which requested it. HSI is automatically put off when the peripheral does not need
it anymore.
4. USART and LPUART reception is functional in Stop mode. It generates a wakeup interrupt on Start.To generate a wakeup
on address match or received frame event, the LPUART can run on LSE clock while the USART has to wake up or keep
running the HSI clock.
5. I2C address detection is functional in Stop mode. It generates a wakeup interrupt in case of address match. It wakes up the
HSI during reception.
Table 3. Functionalities depending on the working mode
(from Run/active down to Standby)
(1)(2)
(continued)
IP
Run/active
mode
Sleep
mode
Low-
power
run
mode
Low-
power
sleep
mode
Stop mode Standby mode
Wakeup
capability
Wakeup
capability
Table 4. STM32L010F4/K4 peripherals interconnect matrix
Interconnect
source
Inter-
connect
destination
Interconnect action Run Sleep
Low-
power
run
Low-
power
sleep
Stop
TIMx TIMx Timer triggered by other timer Y Y Y Y -
RTC
TIM21 Timer triggered by auto wakeup Y Y Y Y -
LPTIM1 Timer triggered by RTC event Y Y Y Y Y
All clocks TIMx
Clock source used as input channel
for RC measurement and trimming
YY Y Y -
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