ST7PMC2N6B6(2004) 查看數據表（PDF） - STMicroelectronics

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ST7PMC2N6B6
(Rev.:2004)

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

STMicroelectronics 

ST7MC1/ST7MC2

MOTOR CONTROLLER (Cont’d)

CONFIGURATION REGISTER (MCONF)

Read/Write

Reset Value: 0000 0010 (02h)

7

6

5

4

3

2

1

0

DS3 DS2 DS1 DS0 SOI SOM XT16 XT8

Bits 7:4 = DS[3:0]: Delay for sampling at Ton

These bits are used to define the delay inserted

before sampling in order to sample during PWM

ON time.

Table 78. Sampling Delay

DS3 DS2 DS1 DS0 Delay added to sample at Ton

0 0 0 0 No delay added. Sample during Toff

0001

2.5 µs

0010

5 µs

0011

7.5 µs

0100

10 µs

0101

12.5 µs

0110

15 µs

0111

17.5 µs

1000

20 µs

1001

22.5 µs

1010

25 µs

1011

27.5 µs

1100

30 µs

1101

32.5 µs

1110

1111

35 µs

37.5 µs

Note: Times are indicated for 4 MHz fPERIPH

Bit 3 = SOI Sampling Out Interrupt flag.

This interrupt indicates that the sampling that

should have been done during Ton has occured

during the next Toff. In this case, the sample is dis-

carded.

0: No Sampling Out Interrupt Pending

1: Sampling Out Interrupt Pending

Bit 2 = SOM: Sampling Out Mask bit.

This interrupt is available only for Z event sampling

as D event sampling is always done at fSCF high

frequency.

0: Sampling Out interrupt disabled

1: Sampling Out interrupt enabled

This interrupt is available only when a delay has

been set in the DS[3:0] bits in the MCONF register.

Note: It is recommended to disable the sampling

out interrupt when software Z event is enabled (SZ

bit in MCRC register is set) and if the value in the

DS[3:0] bits is modified to change the sampling

method during the application.

Bits [1:0] = XT16:XT8 BLDC drive Motor Control

Peripheral input frequency selection:

Table 79. Peripheral frequency

XT16 XT8 Peripheral frequency

0

0

fPERIPH=fMTC

0

1

fPERIPH=fMTC/2

1

0

fPERIPH=fMTC/4

1

1

fPERIPH=fMTC/4

(same as XT16=1,XT8=0)

Caution: It is recommended to set the peripheral

frequency to 4MHz. Setting fPERIPH=fMTC is used

mainly when fOSC2 = 4MHz (for low power con-

sumption).

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