ST72F324J2TCRE View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72F324J2TCRE

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 

ST72324xx-Auto

On-chip peripherals

10.2.2

Caution:

Clock-out capability

The clock-out capability is an alternate function of an I/O port pin that outputs the fCPU clock

to drive external devices. It is controlled by the MCO bit in the MCCSR register.

When selected, the clock out pin suspends the clock during Active Halt mode.

10.2.3 Real-time clock (RTC) timer

The counter of the real-time clock timer allows an interrupt to be generated based on an

accurate real-time clock. Four different time bases depending directly on fOSC2 are available.

The whole functionality is controlled by four bits of the MCCSR register: TB[1:0], OIE and

OIF.

lete Product(s) 10.2.4

When the RTC interrupt is enabled (OIE bit set), the ST7 enters Active Halt mode when the

HALT instruction is executed. See Section 8.4: Active Halt and Halt modes on page 55 for

more details.

Beeper

The beep function is controlled by the MCCBCR register. It can output three selectable

frequencies on the Beep pin (I/O port alternate function).

Figure 33. Main clock controller (MCC/RTC) block diagram

t(s) - Obso MCCBCR

BC1 BC0

Beep signal

selection

Beep

MCO

Obsolete Produc fOSC2

Div 64

12-bit MCC RTC

counter

To

Watchdog

timer

MCO CP1 CP0 SMS TB1 TB0 OIE OIF

MCCSR

Div 2, 4, 8, 16 1

0

MCC/RTC interrupt

fCPU

CPU clock

to CPU and

peripherals

Doc ID 13841 Rev 1

71/193

Share Link: