ST7MC1 datasheet(202/308 Pages) STMICROELECTRONICS

部件名	ST7MC1

功能描述	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, BRUSHLESS MOTOR CONTROL, FIVE TIMERS, SPI, LINSCI

PDF	308 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

202 / 308 page

ST7MC1/ST7MC2

202/308

MOTOR CONTROLLER (Cont’d)

■ Edge-aligned Mode (CMS bit = 0)

In this operating mode, the PWM Counter counts

up to the value loaded in the 12-bit Compare Reg-

ister. Then the PWM Counter is cleared and it re-

starts counting up.

The PWM signals are set to ‘0’ when the PWM

Counter reaches, in up-counting, the correspond-

ing 13-bit Compare register value and they are set

to ‘1’ when the PWM Counter is cleared.

If the 13-bit Compare register value is greater than

the extended Compare 0 register (the 13th bit is

set to ‘0’), the corresponding PWM output signal is

held at ‘1’.

If the 13-bit Compare register value = 0, the corre-

sponding PWM output signal is held at ‘0’.

Figure 120 shows some edge-aligned PWM wave-

forms in an example where the Compare 0 register

value = 8.

Figure 120. Edge-aligned PWM Waveforms (Compare 0 Register = 8)

012345678

3‘1’

4‘0’

1 Compare Register value = 4

2 Compare Register value = 8

3 Compare Register value > 8

4 Compare Register value = 0

ST7MC1 数据表(PDF) 202 Page - STMicroelectronics