ST72321BR9 STMicroelectronics, ST72321BR9 Datasheet - Page 72

• Manufacturer Part Number: ST72321BR9
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72321BR9

• Hdflash Endurance: 100 cycles, data retention
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• Four Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Main Clock Controller With: Real time base, Beep and Clock-out capabilities
• Two 16-bit Timers With: 2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
• 8-bit Pwm Auto-reload Timer With: 2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector

ST72321BRx, ST72321BARx ST72321BJx, ST72321BKx
16-BIT TIMER (Cont’d)
Figure 44. Counter Timing Diagram, Internal Clock Divided by 2
Figure 45. Counter Timing Diagram, Internal Clock Divided by 4
Figure 46. Counter Timing Diagram, Internal Clock Divided By 8
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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TIMER OVERFLOW FLAG (TOF)
TIMER OVERFLOW FLAG (TOF)
TIMER OVERFLOW FLAG (TOF)
COUNTER REGISTER
COUNTER REGISTER
COUNTER REGISTER
INTERNAL RESET
INTERNAL RESET
INTERNAL RESET
TIMER CLOCK
CPU CLOCK
TIMER CLOCK
TIMER CLOCK
CPU CLOCK
CPU CLOCK
FFFC
FFFC
FFFD FFFE FFFF 0000 0001 0002 0003
FFFD
FFFD
0000
0001
0000