ST72F264G ST Microelectronics, ST72F264G Datasheet - Page 40

• Manufacturer Part Number: ST72F264G
• Description: (ST72F260G - ST72F264G) 8-BIT MCU
• Manufacturer: ST Microelectronics

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ST72260G, ST72262G, ST72264G
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,
2. When the I/O port is in output configuration and the associated alternate function is enabled as an input,
3. For true open drain, these elements are not implemented.
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reading the DR register will read the alternate function output status.
the alternate function reads the pin status given by the DR register content.
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PAD
PAD
PAD
V
V
DD
R
DD
R
R
V
PU
PU
PU
DD
NOTE 3
NOTE 3
NOTE 3
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PULL-UP
CONDITION
Hardware Configuration
INTERRUPT
CONDITION
OTHER
FROM
PINS
COMBINATIONAL
ALTERNATE
REGISTER
ENABLE
BIT
DR
LOGIC
DR REGISTER ACCESS
REGISTER
REGISTER
DR
DR
From on-chip periphera
POLARITY
SELECTION
DR REGISTER ACCESS
DR REGISTER ACCESS
W
R
ALTERNATE
OUTPUT
R/W
ANALOG INPUT
ALTERNATE INPUT
To on-chip peripheral
EXTERNAL INTERRUPT
SOURCE (ei
R/W
DATA BUS
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DATA BUS
l
DATA BUS
x
)
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