ST72361 datasheet(105/224 Pages) STMICROELECTRONICS

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ST72361

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8-BIT TIMER (Cont’d)

CONTROL/STATUS REGISTER (CSR)

Read Only (except bit 2 R/W)

Reset Value: 0000 0000 (00h)

Bit 7 = ICF1 Input Capture Flag 1.

0: No input capture (reset value).

1: An input capture has occurred on the ICAP1 pin

or the counter has reached the OC2R value in

PWM mode. To clear this bit, first read the SR

Bit 6 = OCF1 Output Compare Flag 1.

0: No match (reset value).

1: The content of the free running counter has

matched the content of the OC1R register. To

clear this bit, first read the SR register, then read

or write the OC1R register.

Bit 5 = TOF Timer Overflow Flag.

0: No timer overflow (reset value).

1: The free running counter rolled over from FFh to

00h. To clear this bit, first read the SR register,

then read or write the CTR register.

Note: Reading or writing the ACTR register does

not clear TOF.

Bit 4 = ICF2 Input Capture Flag 2.

0: No input capture (reset value).

1: An input capture has occurred on the ICAP2

pin. To clear this bit, first read the SR register,

then read or write the IC2R register.

Bit 3 = OCF2 Output Compare Flag 2.

0: No match (reset value).

1: The content of the free running counter has

matched the content of the OC2R register. To

clear this bit, first read the SR register, then read

or write the OC2R register.

Bit 2 = TIMD Timer disable.

This bit is set and cleared by software. When set, it

freezes the timer prescaler and counter and disa-

bled the output functions (OCMP1 and OCMP2

pins) to reduce power consumption. Access to the

timer registers is still available, allowing the timer

configuration to be changed, or the counter reset,

while it is disabled.

0: Timer enabled

1: Timer prescaler, counter and outputs disabled

Bits 1:0 = Reserved, must be kept cleared.

ICF1

OCF1

TOF

ICF2

OCF2 TIMD

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