ST72321BR9-AUTO View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72321BR9-AUTO

8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface

STMicroelectronics 

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Supply, reset and clock management

ST72321Bxxx-Auto

Figure 16. Using the voltage detector to monitor the EVD pin (AVDS bit = 1)

VEVD

VIT+(EVD)

VIT-(EVD)

Vhyst

AVDF

0

AVD INTERRUPT

REQUEST

IF AVDIE = 1

1

INTERRUPT PROCESS

0

INTERRUPT PROCESS

6.6.3

6.6.4

Low power modes

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.

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 11. AVD interrupt control/wake-up capability

Interrupt event

Event flag Enable control bit Exit from Wait

AVD event

AVDF

AVDIE

Yes

Exit from Halt

No

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