POWERSTEP01 datasheet(67/92 Pages) STMICROELECTRONICS

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powerSTEP01

Programming manual

The SW_MODE bit sets the external switch to act as HardStop interrupt or not:

The OC_SD bit sets if an overcurrent event causes or not the bridges to turn-off; the OCD

flag in status register is forced low anyway:

The VCCVAL bit set the internal VCC regulator output voltage:

111

External crystal or resonator:

32 MHz

Crystal/resonator

driving

Crystal/resonator

driving

100

Ext clock source: 8 MHz

(crystal/resonator driver

disabled)

Clock source

Supplies inverted

OSCIN signal

101

External clock source: 16

MHz (crystal/resonator driver

disabled)

Clock source

Supplies inverted

OSCIN signal

110

External clock source: 24

MHz (crystal/resonator driver

disabled)

Clock source

Supplies inverted

OSCIN signal

111

External clock source: 32

MHz (crystal/resonator driver

disabled)

Clock source

Supplies inverted

OSCIN signal

Table 41. Oscillator management (continued)

EXT_CLK

OSC_SEL [2 … 0]

Clock source

OSCIN

OSCOUT

Table 42. External switch hard stop interrupt mode

SW_MODE

Switch mode

HardStop interrupt

User disposal

Table 43. Overcurrent event

OC_SD

Overcurrent event

Bridges shut down

Bridges do not shut down

Table 44. Programmable VCC voltage regulator output

VCCVAL

VCC voltage

7.5 V

115 V

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