STM32L152RD STMicroelectronics, STM32L152RD Datasheet - Page 23

• Manufacturer Part Number: STM32L152RD
• Description: Ultra-low-power ARM Cortex-M3 MCU with 384 Kbytes Flash, 32 MHz CPU, LCD, USB, 3xOp-amp
• Manufacturer: STMicroelectronics

Specifications of STM32L152RD

• Operating Power Supply Range: 1.65 V to 3.6 V (without BOR) or 1.8 V to 3.6 V
• 7 Modes: Sleep, Low-power run (11 μA at 32 kHz) , Low-power sleep (4.4 μA), Stop with RTC, Stop (650 nA), Standby with RTC, Standby (300 nA)
• Ultralow Leakage Per I/o: 50 nA max
• Fast Wakeup Time From Stop: 8 μs
• Core: ARM 32-bit Cortex™-M3 CPU
• Dma: 12-channel DMA controller
• 11 Timers: one 32-bit and six 16-bit general-purpose timers, two 16-bit basic timers, two watchdog timers (independent and window)

STM32L151xD, STM32L152xD
3.15
3.16
3.17
Table 3.
TIM10,
Timer
TIM11
TIM2,
TIM3,
TIM6,
TIM4
TIM5
TIM9
TIM7
resolution
Counter
16-bit
32-bit
16-bit
16-bit
16-bit
Timer feature comparison
System configuration controller and routing interface
The system configuration controller provides the capability to remap some alternate
functions on different I/O ports.
The highly flexible routing interface allows the application firmware to control the routing of
different I/Os to the TIM2, TIM3 and TIM4 timer input captures. It also controls the routing of
internal analog signals to ADC1, COMP1 and COMP2 and the internal reference voltage
V
Touch sensing
The STM32L15xxD devices provide a simple solution for adding capacitive sensing
functionality to any application. Capacitive sensing technology is able to detect finger
presence near an electrode which is protected from direct touch by a dielectric (glass,
plastic, ...). The capacitive variation introduced by the finger (or any conductive object) is
measured using a proven implementation based on a surface charge transfer acquisition
principle. It consists of charging the electrode capacitance and then transferring a part of the
accumulated charges into a sampling capacitor until the voltage across this capacitor has
reached a specific threshold. In the STM32L15xxD, this acquisition is managed directly by
the GPIOs, timers and analog I/O groups (see
and routing
Reliable touch sensing solution can be quickly and easily implemented using the free
STM32 touch sensing firmware library.
Timers and watchdogs
The ultralow power STM32L15xxD devices include seven general-purpose timers, two basic
timers and two watchdog timers.
Table 3
REFINT
.
compares the features of the general-purpose and basic timers.
Counter type
Up, down,
Up, down,
Up, down,
up/down
up/down
up/down
interface).
Up
Up
Any integer between
Any integer between
Any integer between
Any integer between
Any integer between
Prescaler factor
1 and 65536
1 and 65536
1 and 65536
1 and 65536
1 and 65536
Doc ID 022027 Rev 2
DMA request
generation
Section 3.15: System configuration controller
Yes
Yes
Yes
No
No
Capture/compare
channels
4
4
2
1
0
Functional overview
Complementary
outputs
No
No
No
No
No
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