L9788 datasheet(199/264 Pages) STMICROELECTRONICS

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DS12308 Rev 4

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L9788

Micro second channel (MSC) interface

263

18.5.8

CONFIG-REG 8

[7] HYS_FB_SEL:

0: VRS hyst. Feedback connected before adaptive filter (default)

1: VRS hyst. Feedback connected after adaptive filter

[6] EN_FALLING_FILT:

0: Falling edge filter disabled (default)

1: Falling edge filter enabled

[5:3] VRS_HYST[2:0]

000: Hys current = 17 µA (Hys VRS = 347 mV with 10 kΩ ext resistors) (default)

001: Hys current = 5 µA (Hys VRS=100mV with 10 kΩ ext resistors)

010: Hys current = 10 µA (Hys VRS=200mV with 10 kΩ ext resistors)

011: Hys current = 17 µA (Hys VRS=347mV with 10 kΩ ext resistors)

100: Hys current = 32 µA (Hys VRS=644mV with 10 kΩ ext resistors)

101: Hys current = 51 µA (Hys VRS=967mV with 10 kΩ ext resistors)

110: Hys current = 17 µA (Hys VRS=347mV with 10 kΩ ext resistors)

111: Hys current = 0 µA (used only for test purpose)

[2:1] VRS_MODE[1:0]

Internal auto-adaptive hysteresis OFF allows to configure hysteresis by MSC. Internal auto-

adaptive hysteresis ON selects higher hysteresis between the one configured by MSC and

the one internally computed by peak voltage.

Internal auto-adaptive filter time ON works properly only in full adaptive mode, in limited

adaptive mode filter time ON is fixed to 4 us. Internal auto-adaptive filter time OFF allows to

bypass the filter in both modalities.

00: Internal auto-adaptive hysteresis OFF, internal auto-adaptive filter time OFF

01: Internal auto-adaptive hysteresis ON, internal auto-adaptive filter time OFF

10: Internal auto-adaptive hysteresis OFF, internal auto-adaptive filter time ON (default)

CONFIG-

REG 8

0 1 1 0 1 1

VRS

_DIA

VRS

_MODE[0:1]

VRS

_HYS2[0:2]

EN_FALLING_FILT

HYS_FB_SEL

DEFAULT

RESET SOURCE

D0:D7

v3v3a_ov, v3v3a_uv, v3v3d_ov, v3v3d_uv, vdd5_uv, vddio_uv, sw_reset,

after_run_reset, RSTN_IN

ACTIVATION

D0:D7 bits active as level

CONTROL ACCESS

not locked bits

L9788 Datasheet(PDF) 199 Page - STMicroelectronics

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