ST72521R9-Auto STMicroelectronics, ST72521R9-Auto Datasheet - Page 49

• Manufacturer Part Number: ST72521R9-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST72521R9-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72521xx-Auto
Figure 16. Using the voltage detector to monitor the EVD pin (AVDS bit = 1)
6.6.3
6.6.4
AVDF
AVD INTERRUPT
REQUEST
IF AVDIE = 1
V
V
IT+(EVD)
IT-(EVD)
Low power modes
Table 11.
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).
Table 12.
V
Interrupt event
EVD
Mode
Wait
Halt
AVD event
0
No effect on SI. AVD interrupts cause the device to exit from Wait mode.
The SICSR register is frozen.
Effect of low power modes on SI
AVD interrupt control/wake-up capability
Event flag
INTERRUPT PROCESS
AVDF
V
hyst
Doc ID 17660 Rev 1
Enable control bit
1
AVDIE
Effect
Supply, reset and clock management
Exit from Wait
Yes
INTERRUPT PROCESS
0
Exit from Halt
No
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