ST72321B STMICROELECTRONICS [STMicroelectronics], ST72321B Datasheet - Page 74

• Manufacturer Part Number: ST72321B
• Description: 64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

16-BIT TIMER (Cont’d)
Figure 47. Input Capture Block Diagram
Figure 48. Input Capture Timing Diagram
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ICAP2
ICAP1
pin
pin
COUNTER REGISTER
ICAPi REGISTER
Note: The rising edge is the active edge.
TIMER CLOCK
ICAPi FLAG
16-BIT
EDGE DETECT
IC2R Register
ICAPi PIN
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