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ST72E121 Datasheet(PDF) 38 Page - STMicroelectronics

Part # ST72E121
Description  8-BIT MCU WITH 8 TO 16K OTP/EPROM, 384 TO 512 BYTES RAM, WDG, SCI, SPI AND 2 TIMERS
PDF  92 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72E121 Datasheet(HTML) 38 Page - STMicroelectronics

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ST72E121 ST72T121
16-BIT TIMER (Cont’d)
Figure 25. Input Capture Block Diagram
Figure 26. Input Capture Timing Diagram
ICIE
CC0
CC1
16-BIT FREE RUNNING
COUNTER
IEDG1
(Control Register 1) CR1
(Control Register 2) CR2
ICF2
ICF1
0
0
0
(Status Register) SR
IEDG2
ICAP1
ICAP2
EDGE DETECT
CIRCUIT2
16-BIT
IC1R Register
IC2R Register
EDGE DETECT
CIRCUIT1
pin
pin
FF01
FF02
FF03
FF03
TIMER CLOCK
COUNTER REGIST ER
ICAPi PIN
ICAPi FLAG
ICAPi REGIST ER
Note: A
ctive edge is rising edge.
38



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