ST72F521M9TC datasheet(60/211 Pages) STMICROELECTRONICS

부품명	ST72F521M9TC

상세설명	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

PDF	211 Pages

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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MAIN CLOCK CONTROLLER WITH REAL TIME CLOCK (Cont’d)

Bit 0 = OIF

Oscillator interrupt flag

This bit is set by hardware and cleared by software

reading the MCCSR register. It indicates when set

that the main oscillator has reached the selected

elapsed time (TB1:0).

0: Timeout not reached

1: Timeout reached

CAUTION: The BRES and BSET instructions

must not be used on the MCCSR register to avoid

unintentionally clearing the OIF bit.

MCC BEEP CONTROL REGISTER (MCCBCR)

Read /Write

Reset Value: 0000 0000 (00h)

Bit 7:2 = Reserved, must be kept cleared.

Bit 1:0 = BC[1:0]

Beep control

These 2 bits select the PF1 pin beep capability.

The beep output signal is available in ACTIVE-

HALT mode but has to be disabled to reduce the

consumption.

Table 14. Main Clock Controller Register Map and Reset Values

0000

BC1

BC0

BC1

BC0

Beep mode with fOSC2=8MHz

Off

~2-KHz

Output

Beep signal

~50% duty cycle

~1-KHz

~500-Hz

Address

(Hex.)

Label

7654

3210

002Bh

SICSR

Reset Value

AVDS

AVDIE

AVDF

LVDRF

CSSIE

CSSD

WDGRF

002Ch

MCCSR

Reset Value

MCO

CP1

CP0

SMS

TB1

TB0

OIE

OIF

002Dh

MCCBCR

Reset Value

0000

BC1

BC0

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