ST7MC1K2 datasheet(212/371 Pages) STMICROELECTRONICS

212 / 371 page

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

212/371

Note on using the three MCIx pins as standard I/Os: When none of the MCIx pins are needed in the

application (for instance when driving an induction motor in open loop), they can be used as standard I/O

ports, by configuring the motor controller as follows: PCN = 1, TES

≠ 0 and IS = 11. This disables the

MCIx alternate functions and switches off the phase comparator. The state of the MCIx pins is

summarized in Table 94 on page 212.

Table 94.

MCIx pin configuration summary(1)

When PCN = 0, TES = 0 SR = 0, inputs in OFF-state are put in HiZ or grounded depending on the value of the DISS bit in

the MSCR register.

PCN

TES

SR IS[1:0]

MCIA

MCIB

MCIC

Input detection

block mode

Comments

Analog

input(2)

Analog input: based on analog comparator and analog voltage reference. The corresponding digital I/O is disabled and

data in the DR register is not representative of data on the input.

Hi-Z or

GND

Hi-Z or

GND

Sensorless

All MCIx pins are reserved for

the MTC peripheral.

Hi-Z or

GND

Analog

input(2)

Hi-Z or

GND

Hi-Z or

GND

Hi-Z or

GND

Analog

input(2)

Analog

input(2)

Standard

I/O

Standard

I/O

Position sensor

From 1 to 3 MCIx pins reserved

depending on sensor

Standard

I/O

Analog

input(2)

Standard

I/O

Standard

I/O

Standard

I/O

Analog

input(2)

Standard

I/O

Standard

I/O

Standard

I/O

All MCIx pins are standard I/Os.

Phase comparator is OFF

≠ 0

Analog

input(2)

Standard

I/O

Standard

I/O

Phase comparator is ON. The

IS[1:0] bits must not be modified

to avoid spurious event detection

in motor controller

Standard

I/O

Analog

input(2)

Standard

I/O

Standard

I/O

Standard

I/O

Analog

input(2)

Standard

I/O

Standard

I/O

Standard

I/O

All MCIx pins are standard I/Os.

Recommended configuration:

phase comparator OFF

≠ 00

Digital

input(3)

Digital input: use of standard VIL, VIH I/O level. This input can also be read via the associated I/O port.

Standard

I/O

Standard

I/O

Speed sensor

tachogenerator

Phase comparator is OFF

Standard

I/O

Digital

input(3)

Standard

I/O

Standard

I/O

Standard

I/O

Digital

input(3)

Digital

input(3)

Digital

input(3)

Standard

I/O

Speed sensor

encoder

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