ST72E121J4D0 查看數據表（PDF） - STMicroelectronics

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ST72E121J4D0

8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS

STMicroelectronics 

ST72E121 ST72T121

16-BIT TIMER (Cont’d)

Figure 25. Input Capture Block Diagram

ICAP1

pin

EDGE DETECT EDGE DETECT

ICIE

ICAP2

CIRCUIT2

CIRCUIT1

pin

IC2R Register

IC1R Register

ICF1

16-BIT

16-BIT FREE RUNNING

COUNTER

(Control Register 1) CR1

IED G1

(Status Register) SR

ICF2

0

0

0

(Control Register 2) CR2

CC1 CC0 IEDG2

Figure 26. Input Capture Timing Diagram

TIMER CLOCK

COUNTER REGISTER

FF01

ICAPi PIN

ICAPi FLAG

ICAPi REGISTER

Note: Active edge is rising edge.

FF02

FF03

FF03

38/92

38

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