L9966 datasheet(15/122 Pages) STMICROELECTRONICS

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Figure 7. Example of power down sequence

GADG0401181619PS

For the state evolutions which involve a timeout expiration, two separate timers are taken into account:

•

PB: blanking timeout, 160 µs by default;

•

PT: polling timeout, 16 ms by default.

Both of them have a default value that can be modified, once the SPI is able to operate, setting the appropriate

values in PB[1:0] and PT[1:0] fields inside WAK_CONFIG register.

Every time the system exits from POR or RST_ACTIVE, the two timeouts reset to their default values.

Current consumption in each device status is summarized in next Table 8.

Table 8. Current consumption

Symbol

Parameter

Condition

Min

Typ

Max

Unit

UBSW = 7.5 V:36 V, VDD5V = 4.85 V:5.15 V, Tj-max = 150 °C unless otherwise specified.

V3V3

Internal 3V3

Design info – analog and digital supply voltage

range

3.55

IRST_ACTIVE

Current consumption

during RST

RST pin low, UBSW = 12 V

210

300

µA

UBSW

RST pin low, UBSW = 12 V

CTRL_CFG connected to GND or VDD5 (not

floating) and CS kept H

µA

UBSW

ISLEEP

SLEEP current

consumption

SLEEP mode (no current sources activated and no

WAKE SOURCE defined) and UBSW = 12 V.

CTRL_CFG connected to GND or VDD5 (not

floating) and CS kept H

130

µA

UBSW

ISLEEP-POLLING

Average SLEEP -

POLLING current

consumption

POLLING mode (only one WAKE SOURCE defined

and configured as PULL DOWN), 32 ms PT TIME,

16 µs PB TIME and UBSW = 12 V.

CTRL_CFG connected to GND or VDD5 (not

floating) and CS kept H

130

µA

UBSW

INORMAL

NORMAL current

consumption

NORMAL mode, no active current sources

UBSW

IVDD5

VDD5

NORMAL mode, without SPI and SENTx_GTMx

activity

VDD5

L9966

Operating modes

DS12459 - Rev 10

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