ST7262 datasheet(33/139 Pages) STMICROELECTRONICS

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ST7262 데이터시트(PDF) 33 Page - STMicroelectronics

부품명	ST7262

상세설명	LOW SPEED USB 8-BIT MCU WITH 3 ENDPOINTS, FLASH OR ROM MEMORY, LVD, WDG, 10-BIT ADC, 2 TIMERS, SCI, SPI

PDF	139 Pages

Scroll/Zoom	100%

제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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33 / 139 page

ST7262

33/139

I/O PORTS (Cont’d)

Analog Alternate Functions

When the pin is used as an ADC input, the I/O

must be configured as input. The analog multiplex-

er (controlled by the ADC registers) switches the

analog voltage present on the selected pin to the

common analog rail which is connected to the

ADC input.

It is recommended not to change the voltage level

or loading on any port pin while conversion is in

progress. Furthermore it is recommended not to

have clocking pins located close to a selected an-

alog pin.

Warning: The analog input voltage level must be

within the limits stated in the Absolute Maximum

Ratings.

9.2.4 I/O Port Implementation

The hardware implementation on each I/O port de-

pends on the settings in the DDR register and spe-

cific features of the I/O port such as ADC Input or

true open drain.

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