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APM32F003F4P6-R датащи(PDF) 22 Page - Geehy Semiconductor Co., Ltd. |
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APM32F003F4P6-R датащи(HTML) 22 Page - Geehy Semiconductor Co., Ltd. |
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22 / 56 page ![]() www.geehy.com Page 21 Name Counter Resolver Counter type Prescaler coefficient Function description to abandon its normal sequence. ‒ Driven by the master clock, it has early interrupt warning function. ‒ It can be configured as a software or hardware startup watchdog. 4.11.5. System tick timer (SysTick) System tick timer is a standard 24-bit down counter with automatic reloading function. When the counter is 0, it can generate a masked system interrupt. 4.11.6. Automatic wake-up timer (WUPT) WUPT can provide an internal wake-up time reference when MCU enters low power Active Halt mode. The clock of the time reference is provided by the internal low-speed RC oscillator clock (LIRC) or the pre-divided HXT crystal oscillator clock. BUZZER (Buzzer) Embedded with a buzzer, when the LS clock works at 128kHz, it can generate a buzzer signal with frequency of 1kHz, 2kHz or 4kHz. |
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