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ST7DALI Datasheet(PDF) 48 Page - STMicroelectronics

Part No. ST7DALI
Description  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI, DALI
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST7DALI
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I/O PORTS (Cont’d)
Table 9. 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
W
R
FROM
OTHER
PINS
SOURCE (eix)
SELECTION
DR
REGISTER
CONDITION
ALTERNATE INPUT
ANALOG INPUT
To on-chip peripheral
COMBINATIONAL
LOGIC
NOTE 3
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
R/W
VDD
REGISTER
PAD
RPU
DATA BUS
DR
DR REGISTER ACCESS
R/W
VDD
ALTERNATE
ALTERNATE
ENABLE
OUTPUT
REGISTER
BIT
From on-chip periphera
l
NOTE 3
1




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