ST7MC1K2-Auto datasheet(261/371 Pages) STMICROELECTRONICS

261 / 371 page

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ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto

On-chip peripherals

261/371

Capture Zn register (MZREG)

Compare Cn+1 register (MCOMP)

Demagnetization register (MDREG)

MZREG

Reset value: 0000 0000 (00h)

654

ZC[7:0]

R/W

Table 119.

MZREG register description

Bit

Name

Function

7:0 ZC[7:0]

Current Z value or speed capture MSB.

These bits contain the current captured BEMF value (ZN) in switched and

autoswitched mode or the MSB of the captured value of the [MTIM:MTIML] registers

in speed sensor mode. A read access to MZREG in this case disable the speed

captures up to MZPRV reading (refer to Speed measurement mode on page 227).

MCOMP

Reset value: 0000 0000 (00h)

654

DC[7:0]

R/W

Table 120.

MCOMP register description

Bit

Name

Function

7:0 DC[7:0]

Next compare value

These bits contain the compare value for the next commutation (CN+1).

MDREG

Reset value: 0000 0000 (00h)

654

DN[7:0]

R/W

Table 121.

MDREG register description

Bit

Name

Function

7:0 DN[7:0]

D value

These bits contain the compare value for simulated demagnetization (DN) and the

captured value for hardware demagnetization (DH) in switched and autoswitched

mode. In speed sensor mode, the register contains the value used for comparison

with MTIM registers to generate a speed error event.

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