ST72F324K4TCRE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F324K4TCRE

8-bit MCU for automotive, 3.8 to 5.5V operating range with 8 to 32 Kbyte Flash, 10-bit ADC, 4 timers, SPI, SCI

STMicroelectronics 

On-chip peripherals

ST72324xx-Auto

10.2.5 Low power modes

Table 37. Effect of low power modes on MCC/RTC

Mode

Description

Wait

No effect on MCC/RTC peripheral. MCC/RTC interrupt causes the device to exit

from Wait mode.

Active Halt

No effect on MCC/RTC counter (OIE bit is set), the registers are frozen.

MCC/RTC interrupt causes the device to exit from Active Halt mode.

Halt

MCC/RTC counter and registers are frozen. MCC/RTC operation resumes when

the MCU is woken up by an interrupt with ‘Exit from Halt’ capability.

) 10.2.6

te Product(s) - Obsolete Product(s 10.2.7

Interrupts

The MCC/RTC interrupt event generates an interrupt if the OIE bit of the MCCSR register is

set and the interrupt mask in the CC register is not active (RIM instruction).

Table 38. MCC/RTC interrupt control/wake-up capability

Interrupt event

Event flag Enable control bit Exit from WAIT Exit from HALT

Time base overflow event

OIF

OIE

Yes

No(1)

1. The MCC/RTC interrupt wakes up the MCU from Active Halt mode, not from Halt mode.

MCC registers

MCC control/status register (MCCSR)

)

MCCSR

7

MCO

R/W

6

5

CP[1:0]

R/W

4

SMS

R/W

Reset value: 0000 0000 (00h)

3

2

TB[1:0]

R/W

1

0

OIE

OIF

R/W

R/W

soleTable 39. MCCSR register description

Ob Bit Name

Function

Main Clock Out selection

7 MCO

This bit enables the MCO alternate function on the PF0 I/O port. It is set and

cleared by software.

0: MCO alternate function disabled (I/O pin free for general-purpose I/O).

1: MCO alternate function enabled (fCPU on I/O port).

Note: To reduce power consumption, the MCO function is not active in Active Halt

mode.

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Doc ID 13841 Rev 1

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