STM32L152C6U6 STMicroelectronics, STM32L152C6U6 Datasheet - Page 18

• Manufacturer Part Number: STM32L152C6U6
• Description: ARM Microcontrollers - MCU 32-Bit ARM Cortex 32kb LP LCD MCU
• Manufacturer: STMicroelectronics

Specifications of STM32L152C6U6

• Product Category: ARM Microcontrollers - MCU
• Rohs: yes
• Core: ARM Cortex M3
• Data Bus Width: 32 bit

Functional overview
3.3
3.3.1
3.3.2
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Nested vectored interrupt controller (NVIC)
The ultra-low-power STM32L15xxx embeds a nested vectored interrupt controller able to
handle up to 45 maskable interrupt channels (not including the 16 interrupt lines of
Cortex™-M3) and 16 priority levels.
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This hardware block provides flexible interrupt management features with minimal interrupt
latency.
Reset and supply management
Power supply schemes
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Power supply supervisor
The device has an integrated ZEROPOWER power-on reset (POR)/power-down reset
(PDR) that can be coupled with a brownout reset (BOR) circuitry.
The device exists in two versions:
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After the V
not at power-on), the option byte loading process starts, either to confirm or modify default
thresholds, or to disable the BOR permanently: in this case, the V
1.65 V (whatever the version, BOR active or not, at power-on).
When BOR is active at power-on, it ensures proper operation starting from 1.8 V whatever
the power ramp-up phase before it reaches 1.8 V. When BOR is not active at power-up, the
power ramp-up should guarantee that 1.65 V is reached on V
the POR area.
Closely coupled NVIC gives low-latency interrupt processing
Interrupt entry vector table address passed directly to the core
Closely coupled NVIC core interface
Allows early processing of interrupts
Processing of late arriving, higher-priority interrupts
Support for tail-chaining
Processor state automatically saved
Interrupt entry restored on interrupt exit with no instruction overhead
V
Provided externally through V
V
and PLL (minimum voltage to be applied to V
V
The version with BOR activated at power-on operates between 1.8 V and 3.6 V.
The other version without BOR operates between 1.65 V and 3.6 V.
DD
SSA
DDA
= 1.65 to 3.6 V: external power supply for I/Os and the internal regulator.
, V
DD
and V
DDA
threshold is reached (1.65 V or 1.8 V depending on the BOR which is active or
SSA
= 1.65 to 3.6 V: external analog power supplies for ADC, reset blocks, RCs
must be connected to V
Doc ID 17659 Rev 8
DD
pins.
DD
and V
DDA
STM32L151x6/8/B, STM32L152x6/8/B
SS
is 1.8 V when the ADC is used).
, respectively.
DD
at least 1 ms after it exits
DD
min value becomes