STM8AF52AA STMicroelectronics, STM8AF52AA Datasheet - Page 18

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STM8AF52AA

Manufacturer Part Number
STM8AF52AA
Description
STM8AF52 CAN Line
Manufacturer
STMicroelectronics
Datasheet

Specifications of STM8AF52AA

Max Fcpu
24 MHz
Program Memory
32 to 128 Kbytes Flash program; data retention 20 years at 55 °C
Data Memory
up to 2 Kbytes true data EEPROM; endurance 300 kcycles
Ram
2 Kbytes 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
5.5.3
5.5.4
5.5.5
5.5.6
18/106
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).
24 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.
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 24 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 6.
Frequency range: 1 MHz to 24 MHz
Crystal oscillation mode: preferred fundamental
I/Os: standard I/O pins multiplexed with OSCIN, OSCOUT
Peripheral clock gating bits
Control bit
PCKEN27
PCKEN26
PCKEN25
PCKEN24
PCKEN23
PCKEN22
PCKEN21
PCKEN20
Doc ID 14395 Rev 8
STM8AF52/62xx, STM8AF51/61xx
Peripheral
AWU
CAN
ADC

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