stm8af6166t STMicroelectronics, stm8af6166t Datasheet - Page 15

• Manufacturer Part Number: stm8af6166t
• Description: Automotive 8-bit Mcu, With Up To 128 Kbytes Flash, Eeprom, 10-bit Adc, Timers, Lin, Can, Usart, Spi, I2c, 3 V To 5.5 V
• Manufacturer: STMicroelectronics

STM8AF61xx, STM8AF51xx
5.4
5.5
Speed
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Low-power operating modes
The product features various low-power modes:
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In all modes the CPU and peripherals remain permanently powered, the system clock is
applied only to selected modules.
The RAM content is guaranteed. Also, the brown-out reset circuit remains activated.
Clock and clock controller
The clock controller distributes the system clock coming from different oscillators to the core
and the peripherals. It also manages clock gating for low power modes and insures clock
robustness.
Features
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Operation at up to 16 MHz CPU clock frequency without wait-states
Programming time (same for word or block):
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Slow mode: prescaled CPU clock, selected peripherals at full clock speed
Active halt mode: CPU and peripheral clock stopped. The programmable wake-up time
is controlled by the AWU unit using the internal low-power 128 kHz oscillator clock.
Halt mode: CPU and peripheral clock stopped, the device remains powered. Wake-up
by external interrupt.
Clock sources: Internal 16 MHz and 128 kHz RC oscillators, intrapad crystal oscillator
and input for external clock signal
Reset: After reset the microcontroller restarts by default with an internal 2 MHz clock
(16 MHz/8). The prescaler ratio and the clock source can be changed by the
application program as soon as the code execution starts.
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.
Wake-up: The recovery from halt and AWU (auto wake-up) low power modes uses the
internal 16 MHz/8 RC oscillator for quick start-up and then switches to the last selected
clock source before halt mode is entered.
Clock security system (CSS): This feature is automatically is automatically activated
if the external clock is selected. In case of a clock failure, the internal RC (16 MHz/8) is
automatically selected and an interrupt is generated.
Configurable main clock output (CCO): This outputs an external clock for use by the
application. Available frequencies are 8 MHz, 4 MHz or 1 MHz.
Fast programming (without erase): < 3 ms
Standard programming (erase + program): < 6 ms
Erase time: < 3 ms
Total code write time for 128 Kbyte: (1024) pages * 3 ms = 3.7 s (fast write)
Product overview
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