Arm ® Cortex ® -M3 Core With Mpu - STMicroelectronics STM32L151RE Manual

Functional overview
Table 5. Functionalities depending on the working mode (from Run/active down to
Ips
ADC
DAC
Tempsensor
OP amp
Comparators
16-bit and 32-bit
Timers
IWDG
WWDG
Touch sensing
Systic Timer
GPIOs
Wakeup time to
Run mode
Consumption
V =1.8 to 3.6 V µA/MHz (from
DD
(Typ)
1. The startup on communication line wakes the CPU which was made possible by an EXTI, this induces a delay before
entering run mode.
®
3.2 ARM
The ARM
It has been developed to provide a low-cost platform that meets the needs of MCU
implementation, with a reduced pin count and low-power consumption, while delivering
outstanding computational performance and an advanced system response to interrupts.
The ARM
delivering the high-performance expected from an ARM core in the memory size usually
associated with 8- and 16-bit devices.
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standby) (continued)
Run/Active Sleep
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
Y Y
0 µs 0.4 µs
Down to 195 Down to 38
µA/MHz (from
Flash) Flash)
®
Cortex -M3 core with MPU
® ®
Cortex -M3 processor is the industry leading processor for embedded systems.
® ®
Cortex -M3 32-bit RISC processor features exceptional code-efficiency,
DocID025433 Rev 8
STM32L151xE STM32L152xE
Low- Low-
power power
Run Sleep
-- -- --
Y Y Y
Y Y Y
Y Y Y
Y Y Y
Y Y --
Y Y Y
Y Y --
-- -- --
Y Y
Y Y Y
3 µs 46 µs
Down to Down to
11 µA 4.6 µA
Stop Standby
Wakeup Wakeup
capability capability
-- --
-- --
-- --
-- --
Y --
-- --
Y Y
-- --
-- --
-- --
Y -- 3 pins
< 8 µs 58 µs
0.53 µA 0.285 µA
(no RTC) (no RTC)
V =1.8V V =1.8V
DD DD
1.2 µA 0.97 µA
(with RTC) (with RTC)
V =1.8V V =1.8V
DD DD
0.56 µA 0.29 µA
(no RTC) (no RTC)
V =3.0V V =3.0V
DD DD
1.4 µA 1.11 µA
(with RTC) (with RTC)
V =3.0V V =3.0V
DD DD
--
--
--
--
--
--
Y
--
--
--