ST72E632K2B0 查看數據表（PDF） - STMicroelectronics

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ST72E632K2B0

LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C

STMicroelectronics 

ST7263

16-BIT TIMER (Cont’d)

Figure 24. Counter Timing Diagram, internal clock divided by 2

CPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER

TIMER OVERFLOW FLAG (TOF)

FFFD FFFE FFFF 0000 0001 0002 0003

Figure 25. Counter Timing Diagram, internal clock divided by 4

CPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER FFFC FFFD

TIMER OVERFLOW FLAG (TOF)

0000

0001

Figure 26. Counter Timing Diagram, internal clock divided by 8

CPU CLOCK

INTERNAL RESET

TIMER CLOCK

COUNTER REGISTER

FFFC

FFFD

0000

TIMER OVERFLOW FLAG (TOF)

Note: The MCU is in reset state when the internal reset signal is high. When it is low, the MCU is running.

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