ST7FOXK2 datasheet(88/226 Pages) STMICROELECTRONICS

88 / 226 page

On-chip peripherals

ST7FOXF1, ST7FOXK1, ST7FOXK2

88/226

When a break function is activated (BA bit =1 and BREN1/BREN2 =1):

●

The break pattern (PWM[3:0] bits in the BREAKCR) is forced directly on the PWMx

output pins if respective OEx is set. (after the inverter).

●

The 12-bit PWM counter CNTR1 is put to its reset value, i.e. 00h (if BREN1 = 1).

●

The 12-bit PWM counter CNTR2 is put to its reset value,i.e. 00h (if BREN2 = 1).

●

ATR1, ATR2, Preload and Active DCRx are put to their reset values.

●

Counters stop counting.

When the break function is deactivated after applying the break (BA bit goes from 1 to 0 by

software), Timer takes the control of PWM ports.

Note:

The break function of the ST7FOXK2 is different from the break function of the

ST7FOXF1/ST7FOXK1. Refer to Figure 41: ST7FOXF1/ST7FOXK1 Block diagram of break

function on page 88 and Figure 42: ST7FOXK2 Block diagram of break function on page 89

Figure 41.

ST7FOXF1/ST7FOXK1 Block diagram of break function

PWM0

PWM1

PWM2

PWM3

PWM0

PWM1

PWM2

PWM3

BREAKCR register

BREAK pin

(Inverters)

PWM0

PWM1

PWM2

PWM3

BPEN

Level

Selection

BRSEL

BREDGE BREAKCR register

ENCNTR2 bit

BREN1

BREN2

BREAKEN register

PWM0/1 Break Enable

PWM2/3 Break Enable

OEx

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