ST72321R9-Auto datasheet(73/243 Pages) STMICROELECTRONICS

部件名	ST72321R9-Auto

功能描述	PLL for 2x frequency multiplication

PDF	243 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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73 / 243 page

ST72321xx-Auto

I/O ports

Doc ID 13829 Rev 1

73/243

Table 30.

I/O port configurations

Hardware configuration

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

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.

CONDITION

PAD

VDD

RPU

EXTERNAL INTERRUPT

DATA BUS

PULL-UP

INTERRUPT

DR REGISTER ACCESS

SOURCE (eix)

CONDITION

ALTERNATE INPUT

NOT IMPLEMENTED IN

TRUE OPEN DRAIN

I/O PORTS

ANALOG INPUT

PAD

RPU

DATA BUS

DR REGISTER ACCESS

R/W

VDD

ALTERNATE

ENABLE

OUTPUT

NOT IMPLEMENTED IN

TRUE OPEN DRAIN

I/O PORTS

PAD

RPU

DATA BUS

DR REGISTER ACCESS

R/W

VDD

ALTERNATE

ENABLE

OUTPUT

NOT IMPLEMENTED IN

TRUE OPEN DRAIN

I/O PORTS

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