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ST92195B Fiches technique(PDF) 11 Page - STMicroelectronics

No de pièce ST92195B
Description  32-64K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY AND TELETEXT DATA SLICER
PDF  22 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST92195B Fiches technique(HTML) 11 Page - STMicroelectronics

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ST92195B - GENERAL DESCRIPTION
PIN DESCRIPTION (Cont’d)
AF Outputs or Bidirectional Lines:
– In the case of Outputs or I/Os, AF is selected
explicitly by software.
Example 1: ADC trigger digital input
AF: EXTRG, Port: P4.7, Port Style: Standard I/O.
Write the port configuration bits (for TTL level):
P4C2.7=1
P4C1.7=0
P4C0.7=1
Enable the ADC trigger by software as described
in the ADC chapter.
Example 2: PWM 0 output
AF: PWM0, Port: P4.0
Write the port configuration bits (for output push-
pull):
P4C2.0=0
P4C1.0=1
P4C0.0=1
Example 3: ADC analog input
AF: AIN1, Port : P2.1, Port style: does not apply to
analog inputs
Write the port configuration bits:
P2C2.1=1
P2C1.1=1
P2C0.1=1



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