ST72321_04 datasheet(74/189 Pages) STMICROELECTRONICS

Part #	ST72321

Description	64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC,FIVE TIMERS, SPI, SCI, I2C INTERFACE

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ST72321

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16-BIT TIMER (Cont’d)

Figure 47. Input Capture Block Diagram

Figure 48. Input Capture Timing Diagram

ICIE

CC0

CC1

16-BIT FREE RUNNING

COUNTER

IEDG1

(Control Register 1) CR1

(Control Register 2) CR2

ICF2

ICF1

0

(Status Register) SR

IEDG2

ICAP1

ICAP2

EDGE DETECT

CIRCUIT2

16-BIT

IC1R Register

IC2R Register

EDGE DETECT

CIRCUIT1

FF01

FF02

FF03

TIMER CLOCK

COUNTER REGISTER

ICAPi PIN

ICAPi FLAG

ICAPi REGISTER

Note: The

rising edge is the active edge.

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