ST72321BR9 STMicroelectronics, ST72321BR9 Datasheet - Page 74

• 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 47. Input Capture Block Diagram
Figure 48. Input Capture Timing Diagram
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ICAP1
ICAP2
pin
pin
COUNTER REGISTER
ICAPi REGISTER
Note: The rising edge is the active edge.
TIMER CLOCK
ICAPi FLAG
16-BIT
EDGE DETECT
ICAPi PIN
IC2R Register
16-BIT FREE RUNNING
CIRCUIT2
COUNTER
FF01
EDGE DETECT
CIRCUIT1
IC1R Register
FF02
ICF1
ICIE
FF03
ICF2
(Control Register 1) CR1
(Control Register 2) CR2
CC1
(Status Register) SR
CC0
FF03
0
IEDG2
IEDG1
0
0