ST72T311R6T1 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST72T311R6T1
STMicroelectronics
'ST72T311R6T1' PDF : 164 Pages View PDF
ST72311R, ST72511R, ST72512R, ST72532R
I/O PORTS (Cont’d)
Table 10. I/O Port Configurations
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
PAD
VDD
RPU
Hardware Configu ration
DR REGISTER ACCESS
PULL-UP
CONDITIO N
DR
W
REGI STER
R
DATA BUS
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
PA D
VDD
RPU
FROM
OTHER
PINS
INTERRUPT
CONDITION
ALTERNATE INPUT
POLARITY
S ELECTI ON
EXTERNAL INTERRU PT
SOURCE (eix)
ANALOG INPUT
DR REGIST ER ACCESS
DR
R/W
REGIST ER
DATA BUS
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
PA D
VDD
RPU
ALTERNATE
ENAB LE
ALTERNATE
OUTPUT
DR REGIST ER ACCESS
DR
R/W
REGIST ER
DATA BUS
ALTERNATE
ENAB LE
ALTERNATE
OUTPUT
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.
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