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ST72340 Datasheet(PDF) 54 Page - STMicroelectronics

No. de pieza ST72340
Descripción Electrónicos  8-BIT MCU WITH UP TO 16K FLASH MEMORY, 10-BIT ADC, TWO 16-BIT TIMERS, TWO I2C, SPI, SCI
PDF  191 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72340 Datasheet(HTML) 54 Page - STMicroelectronics

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I/O PORTS (Cont’d)
Table 12. I/O Port 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.
Hardware Configuration
CONDITION
PAD
VDD
RPU
EXTERNAL INTERRUPT
DATA BUS
PULL-UP
INTERRUPT
DR REGISTER ACCESS
W
R
SOURCE (eix)
DR
REGISTER
CONDITION
ALTERNATE INPUT
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
ANALOG INPUT
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
R/W
VDD
ALTERNATE
ALTERNATE
ENABLE
OUTPUT
REGISTER
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
R/W
VDD
ALTERNATE
ALTERNATE
ENABLE
OUTPUT
REGISTER
NOT IMPLEMENTED IN
TRUE OPEN DRAIN
I/O PORTS



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