STM8S207RB STMicroelectronics, STM8S207RB Datasheet - Page 16

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STM8S207RB

Manufacturer Part Number
STM8S207RB
Description
Performance line, 24 MHz STM8S 8-bit MCU, up to 128 Kbytes Flash, integrated EEPROM
Manufacturer
STMicroelectronics
Datasheet

Specifications of STM8S207RB

Max Fcpu
up to 24 MHz, 0 wait states @ fCPU≤ 16 MHz
Program
up to 128 Kbytes Flash; data retention 20 years at 55 °C after 10 kcycles
Data
up to 2 Kbytes true data EEPROM; endurance 300 kcycles
Ram
up to 6 Kbytes
Advanced Control Timer
16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization

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Product overview
4.5
16/103
Clock controller
The clock controller distributes the system clock (f
to the core and the peripherals. It also manages clock gating for low power modes and
ensures clock robustness.
Features
Table 3.
PCKEN17
PCKEN16
PCKEN15
PCKEN14
Bit
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. The clock signal is not switched until the new clock
source is ready. The design guarantees glitch-free switching.
Clock management: To reduce power consumption, the clock controller can stop the
clock to the core, individual peripherals or memory.
Master clock sources: Four different clock sources can be used to drive the master
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 an HSE
clock failure occurs, the internal RC (16 MHz/8) is automatically selected by the CSS
and an interrupt can optionally be generated.
Configurable main clock output (CCO): This outputs an external clock for use by the
application.
1-24 MHz high-speed external crystal (HSE)
Up to 24 MHz high-speed user-external clock (HSE user-ext)
16 MHz high-speed internal RC oscillator (HSI)
128 kHz low-speed internal RC (LSI)
Peripheral
Peripheral clock gating bit assignments in CLK_PCKENR1/2 registers
clock
TIM1
TIM3
TIM2
TIM4
PCKEN13
PCKEN12
PCKEN11
PCKEN10
Bit
Doc ID 14733 Rev 12
Peripheral
UART3
UART1
clock
SPI
I
2
C
PCKEN27
PCKEN26
PCKEN25
PCKEN24
MASTER)
Bit
Peripheral
Reserved
Reserved
Reserved
coming from different oscillators
beCAN
clock
STM8S207xx, STM8S208xx
PCKEN23
PCKEN22
PCKEN21
PCKEN20
Bit
Peripheral
Reserved
Reserved
clock
AWU
ADC

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