STM8AP6268TA Просмотр технического описания (PDF) - STMicroelectronics

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STM8AP6268TA

Automotive 8-bit MCU, with up to32 Kbytes Flash, data EEPROM, 10-bit ADC, timers, LIN, SPI, I2C, 3 to 5.5V

STMicroelectronics 

Product overview

STM8AF61xx, STM8AF62xx

5.5.3

5.5.4

5.5.5

5.5.6

128 kHz low-speed internal RC oscillator (LSI)

The frequency of this clock is 128 kHz and it is independent from the main clock. It drives

the independent watchdog or the AWU wakeup timer.

In systems which do not need independent clock sources for the watchdog counters, the

128 kHz signal can be used as the system clock. This configuration has to be enabled by

setting an option byte (OPT3/OPT3N, bit LSI_EN).

16 MHz high-speed external crystal oscillator (HSE)

The external high-speed crystal oscillator can be selected to deliver the main clock in

normal Run mode. It operates with quartz crystals and ceramic resonators.

● Frequency range: 1 MHz to 16 MHz

● Crystal oscillation mode: preferred fundamental

● I/Os: standard I/O pins multiplexed with OSCIN, OSCOUT

External clock input

An external clock signal can be applied to the OSCIN input pin of the crystal oscillator. The

frequency range is 0 to 16 MHz.

Clock security system (CSS)

The clock security system protects against a system stall in case of an external crystal clock

failure.

In case of a clock failure an interrupt is generated and the high-speed internal clock (HSI) is

automatically selected with a frequency of 2 MHz (16 MHz/8).

Table 4. Peripheral clock gating bit assignments in CLK_PCKENR1/2 registers

Bit

Peripheral

clock

Bit

Peripheral

clock

Bit

Peripheral

clock

Bit

Peripheral

clock

PCKEN17 TIM1 PCKEN13 LINUART PCKEN27 Reserved PCKEN23 ADC

PCKEN16 TIM3 PCKEN12 Reserved PCKEN26 Reserved PCKEN22 AWU

PCKEN15 TIM2 PCKEN11

SPI

PCKEN25 Reserved PCKEN21 Reserved

PCKEN14 TIM4 PCKEN10

I2C

PCKEN24 Reserved PCKEN20 Reserved

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Doc ID 14952 Rev 6

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