ST7MC1K2-Auto datasheet(280/371 Pages) STMICROELECTRONICS

280 / 371 page

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

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Warning:

Access to preload registers: Special care has to be taken

with preload registers, especially when using the ST7 BSET

and BRES instructions on MTC registers.

For instance, while writing to the MPHST register, the value in

the preload register is written. However, while reading at the

same address, the current value in the register and not the

value of the preload register is obtained.

Excepted for three-phase PWM generator’s registers, all

preload registers are loaded in the active registers at the

same time. In normal mode this is done automatically when a

C event occurs, however in direct access mode (DAC bit = 1)

the preload registers are loaded as soon as a value is written

in the MPHST register.

Caution:

Access to write-once bits: Special care has to be taken with write-once bits in MPOL and

MDTG registers; these bits have to be first accessed during the set-up. Any access to the

other bits (not write-once) through a BRES or a BSET instruction locks the content of write-

once bits (no possibility for the core to distinguish individual bit access: Read/write internal

signal acts on a whole register only). This protection is then only unlocked after a processor

hardware reset.

Deadtime generator register (MDTG)

MDTG

Reset value: 1111 1111 (FFh)

654

PCN

DTE

DTG[5:0]

R/W

(1)

Write once-only bit if PCN bit is set, read/write if PCN bit is reset.

Write once only

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