ST72325 STMICROELECTRONICS [STMicroelectronics], ST72325 Datasheet - Page 33
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ST72325
Manufacturer Part Number
ST72325
Description
8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST72325.pdf
(193 pages)
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SYSTEM INTEGRITY MANAGEMENT (Cont’d)
6.4.2.2 Monitoring a Voltage on the EVD pin
This mode is selected by setting the AVDS bit in
the SICSR register.
The AVD circuitry can generate an interrupt when
the AVDIE bit of the SICSR register is set. This in-
terrupt is generated on the rising and falling edges
Figure 19. Using the Voltage Detector to Monitor the EVD pin (AVDS bit=1)
AVDF
AVD INTERRUPT
REQUEST
IF AVDIE = 1
V
V
IT+(EVD)
IT-(EVD)
V
EVD
0
INTERRUPT PROCESS
V
hyst
1
of the comparator output. This means it is generat-
ed when either one of these two events occur:
The EVD function is illustrated in
For more details, refer to the Electrical Character-
istics section.
– V
– V
EVD
EVD
rises up to V
falls down to V
IT+(EVD)
IT-(EVD)
INTERRUPT PROCESS
Figure
0
ST72325
19.
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