ST7MC2 datasheet(214/308 Pages) STMICROELECTRONICS

Part #	ST7MC2

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

PDF	308 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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214 / 308 page

ST7MC1/ST7MC2

214/308

MOTOR CONTROLLER (Cont’d)

MOTOR

CURRENT

FEEDBACK

(MCFR)

Read/Write

Reset Value: 0000 0000 (00h)

Bit 7= RPGS: Register Page Selection:

0: Access to registers mapped in page 0

1: Access to registers mapped in page 1

Bit 6= RST: Reset MTC registers.

Software can set this bit to reset all MTC registers

without resetting the ST7.

0: No MTC register reset

1: Reset all MTC registers

Bits 5:3 = CFF[2:0]: Current Feedback Filter bits

These bits select the number of consecutive valid

samples (when the current is above the limit)

needed to generate the active event. Sampling is

done at fPERIPH/4.

Table 67. Current Feedback Filter Setting

Bits 2:0 = CFW[2:0]: Current Window Filter bits:

These bits select the length of the blanking win-

dow activated each time PWM is turned ON. The

filter blanks the output of the current comparator.

Table 68. Current Feedback Window Setting

Note: Times are indicated for 4 MHz fPERIPH

RPGS

RST

CFF2

CFF1

CFF0

CFW2 CFW1 CFW0

CFF2

CFF1

CFF0

Current Feedback Samples

000

001

010

011

100

101

110

111

CFW2

CFW1

CFW0

Blanking Window

Blanking window off

0.5µs

1µs

1.5µs

2µs

2.5µs

3µs

3.5µs

ST7MC2 Datasheet(PDF) 214 Page - STMicroelectronics

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