ST7MC2N6 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST7MC2N6

8-bit MCU with nested interrupts, Flash, 10-bit ADC, brushless motor control, five timers, SPI, LINSCI™

STMicroelectronics 

ST7MC1xx/ST7MC2xx

MOTOR CONTROLLER (Cont’d)

MOTOR D EVENT FILTER REGISTER (MDFR)

Read/Write

Reset Value: 0000 1111 (0Fh)

7

6

5

4

3

2

1

0

DEF3 DEF2 DEF1 DEF0 DWF3 DWF2 DWF1 DWF0

Bits 7:4 = DEF[3:0]: D Event Filter bits

These bits select the number of valid consecutive

D events (when the D event is detected) needed to

generate the active event. Sampling is done at the

selected fSCF frequency, see Table 82.

Table 69. D Event filter Setting

DEF3 DEF2 DEF1 DEF0

D event

Samples

SR=1

0

0

0

0

1

0

0

0

1

2

0

0

1

0

3

0

0

1

1

4

0

1

0

0

5

0

1

0

1

6

0

1

1

0

7

0

1

1

1

8

1

0

0

0

9

1

0

0

1

10

1

0

1

0

11

1

0

1

1

12

1

1

0

0

13

1

1

0

1

14

1

1

1

0

15

1

1

1

1

16

Bit 3:0 = DWF[3:0]: D Window Filter bits

These bits select the length of the blanking win-

dow activated at each C event. The filter blanks

the D event detection.

Table 70. D Window Filter setting

DWF3

DWF2

DWF1

DWF0

C to D

Window

Filter in

Sensorless

mode (SR=0)

SR=1

0

0

0

0

5µs

0

0

0

1

10µs

0

0

1

0

15µs

0

0

1

1

20µs

0

1

0

0

25µs

0

1

0

1

30µs

0

1

1

0

35µs

0

1

1

1

40µs

1

0

0

0

60µs

1

0

0

1

80µs

1

0

1

0

100µs

1

0

1

1

120µs

1

1

0

0

140µs

1

1

0

1

160µs

1

1

1

0

180µs

1

1

1

1

200µs

Note: Times are indicated for 4 MHz fPERIPH

216/309

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