ST72361AR9-Auto STMicroelectronics, ST72361AR9-Auto Datasheet - Page 72
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ST72361AR9-Auto
Manufacturer Part Number
ST72361AR9-Auto
Description
8-bit MCU for automotive with K Flash, 10-bit ADC, 5 Timers, SPI, 2x LINSCI
Manufacturer
STMicroelectronics
Datasheet
1.ST72361AR9-AUTO.pdf
(279 pages)
Specifications of ST72361AR9-Auto
Hdflash Endurance
100 cycles, data retention 20 years at 55 °C
5 Power Saving Modes
halt, auto wake up from halt, active halt, wait and slow
- Current page: 72 of 279
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I/O ports
8.2.2
8.2.3
Note:
72/279
Each external interrupt vector is linked to a dedicated group of I/O port pins (see pinout
description and interrupt section). If several input pins are selected simultaneously as
interrupt sources, these are first detected according to the sensitivity bits in the EICR
register and then logically ORed.
The external interrupts are hardware interrupts, which means that the request latch (not
accessible directly by the application) is automatically cleared when the corresponding
interrupt vector is fetched. To clear an unwanted pending interrupt by software, the
sensitivity bits in the EICR register must be modified.
Output modes
The output configuration is selected by setting the corresponding DDR register bit. In this
case, writing the DR register applies this digital value to the I/O pin through the latch. Then
reading the DR register returns the previously stored value.
Two different output modes can be selected by software through the OR register: Output
push-pull and open-drain.
Table 25.
Alternate functions
When an on-chip peripheral is configured to use a pin, the alternate function is automatically
selected. This alternate function takes priority over the standard I/O programming.
When the signal is coming from an on-chip peripheral, the I/O pin is automatically
configured in output mode (push-pull or open drain according to the peripheral).
When the signal is going to an on-chip peripheral, the I/O pin must be configured in input
mode. In this case, the pin state is also digitally readable by addressing the DR register.
Input pull-up configuration can cause unexpected value at the input of the alternate
peripheral input. When an on-chip peripheral use a pin as input and output, this pin has to
be configured in input floating mode.
DR
0
1
DR register value and output pin status
Doc ID 12468 Rev 3
Push-pull
V
V
DD
SS
Open-drain
Floating
Vss
ST72361xx-Auto
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