ST72260GX datasheet(40/172 Pages) STMICROELECTRONICS

Part #	ST72260GX

Description	8-BIT MCU WITH FLASH OR ROM MEMORY, ADC, TWO 16-BIT TIMERS, I2C, SPI, SCI INTERFACES

PDF	172 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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40 / 172 page

ST72260Gx, ST72262Gx, ST72264Gx

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I/O PORTS (Cont’d)

Table 8. I/O Configurations

Notes:

1. When the I/O port is in input configuration and the associated alternate function is enabled as an output,

reading the DR register will read the alternate function output status.

2. When the I/O port is in output configuration and the associated alternate function is enabled as an input,

the alternate function reads the pin status given by the DR register content.

3. For true open drain, these elements are not implemented.

Hardware Configuration

NOTE 3

CONDITION

PAD

VDD

RPU

EXTERNAL INTERRUPT

POLARITY

DATA BUS

PULL-UP

INTERRUPT

DR REGISTER ACCESS

FROM

OTHER

PINS

SOURCE (eix)

SELECTION

CONDITION

ALTERNATE INPUT

ANALOG INPUT

To on-chip peripheral

COMBINATIONAL

LOGIC

NOTE 3

PAD

RPU

DATA BUS

DR REGISTER ACCESS

R/W

VDD

PAD

RPU

DATA BUS

DR REGISTER ACCESS

R/W

VDD

ALTERNATE

ENABLE

OUTPUT

BIT

From on-chip periphera

NOTE 3

ST72260GX Datasheet(PDF) 40 Page - STMicroelectronics

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