ST72P623 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72P623

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

STMicroelectronics 

ST7262xxx

I/O PORTS (Cont’d)

Analog Alternate Functions

have clocking pins located close to a selected an-

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

must be configured as input. The analog multiplex- Warning: The analog input voltage level must be

er (controlled by the ADC registers) switches the within the limits stated in the Absolute Maximum

analog voltage present on the selected pin to the Ratings.

common analog rail which is connected to the

ADC input.

9.2.4 I/O Port Implementation

It is recommended not to change the voltage level

The hardware implementation on each I/O port de-

pends on the settings in the DDR register and spe-

or loading on any port pin while conversion is in

Obsolete Product(s) - Obsolete Product(s) progress. Furthermore it is recommended not to

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

true open drain.

Doc ID 6996 Rev 5

33/139

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