STM8L152C8 STMicroelectronics, STM8L152C8 Datasheet - Page 17

• Manufacturer Part Number: STM8L152C8
• Description: STM8L-Ultra Low Power-8 bits Microcontrollers
• Manufacturer: STMicroelectronics

Specifications of STM8L152C8

• Operating Power Supply: 1.65 to 3.6 V (without BOR), 1.8 to 3.6 V (with BOR)
• Temp. Range: −40 to 85, 105 or 125 °C
• 5 Low Power Modes: Wait, Low power run (5.9 μA), Low power wait (3 μA), Active-halt with full RTC (1.4 μA), Halt (400 nA)
• Dynamic Power Consumption: 200 μA/MHz+330 μA
• Ultra Low Leakage Per I/0: 50 nA
• Max Freq: 16 MHz, 16 CISC MIPS peak
• Lcd: 8x40 or 4x44 w/ step-up converter

STM8L15xx8, STM8L15xR6
3.3.3
3.4
Voltage regulator
The high density and medium+ density STM8L15xxdevices embed an internal voltage
regulator for generating the 1.8 V power supply for the core and peripherals.
This regulator has two different modes:
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When entering Halt or Active-halt modes, the system automatically switches from the MVR
to the LPVR in order to reduce current consumption.
Clock management
The clock controller distributes the system clock (SYSCLK) coming from different oscillators
to the core and the peripherals. It also manages clock gating for low power modes and
ensures clock robustness.
Features
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Main voltage regulator mode (MVR) for Run, Wait for interrupt (WFI) and Wait for event
(WFE) modes.
Low power voltage regulator mode (LPVR) for Halt, Active-halt, Low power run and Low
power wait modes.
Clock prescaler: to get the best compromise between speed and current consumption
the clock frequency to the CPU and peripherals can be adjusted by a programmable
prescaler
Safe clock switching: Clock sources can be changed safely on the fly in run mode
through a configuration register.
Clock management: To reduce power consumption, the clock controller can stop the
clock to the core, individual peripherals or memory.
System clock sources: 4 different clock sources can be used to drive the system
clock:
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RTC and LCD clock sources: the above four sources can be chosen to clock the RTC
and the LCD, whatever the system clock.
Startup clock: After reset, the microcontroller restarts by default with an internal
2 MHz clock (HSI/8). The prescaler ratio and clock source can be changed by the
application program as soon as the code execution starts.
Clock security system (CSS): This feature can be enabled by software. If a HSE clock
failure occurs, the system clock is automatically switched to HSI.
Configurable main clock output (CCO): This outputs an external clock for use by the
application.
1-16 MHz High speed external crystal (HSE)
16 MHz High speed internal RC oscillator (HSI)
32.768 Low speed external crystal (LSE)
38 kHz Low speed internal RC (LSI)
Doc ID 17943 Rev 4
Functional overview
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