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ST72321BXXX-AUTO Datasheet(PDF) 52 Page - STMicroelectronics

Part # ST72321BXXX-AUTO
Description  8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72321BXXX-AUTO Datasheet(HTML) 52 Page - STMicroelectronics

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Supply, reset and clock management
ST72321Bxxx-Auto
52/247
Figure 16.
Using the voltage detector to monitor the EVD pin (AVDS bit = 1)
6.6.3
Low power modes
6.6.4
Interrupts
The AVD interrupt event generates an interrupt if the corresponding Enable Control Bit
(AVDIE) is set and the interrupt mask in the CC register is reset (RIM instruction).
VEVD
VIT+(EVD)
VIT-(EVD)
AVDF
0
0
1
IF AVDIE = 1
Vhyst
AVD INTERRUPT
REQUEST
INTERRUPT PROCESS
INTERRUPT PROCESS
Table 10.
Effect of low power modes on SI
Mode
Effect
Wait
No effect on SI. AVD interrupts cause the device to exit from Wait mode.
Halt
The SICSR register is frozen.
Table 11.
AVD interrupt control/wake-up capability
Interrupt event
Event flag
Enable control bit
Exit from Wait
Exit from Halt
AVD event
AVDF
AVDIE
Yes
No


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