L9965TS datasheet(12/62 Pages) STMICROELECTRONICS

Il numero della parte	L9965TS

Spiegazioni elettronici	Automotive SPI to isolated SPI transceiver

PDF	62 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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Functional description

5.1

Device functional states

The following figure shows all possible L9965T and L9965TS states.

Figure 5. L9965T/TS functional state mode (FSM)

Table 7. Device functional states

State

Purpose

Reached

from

Condition

Active

resources

OFF

Device OFF

Any state

When VB voltage falls below the POR threshold

None

DEEPSLEEP

Ultra-low power

state for

managing long

inactivity

periods

NORMAL

•

GO2SLP command received AND no

CYCLIC_WAKEUP timer enabled

(GEN_CFG5.WAKEUP_CYCLIC_ENB=0)

•

OSC STUCK detected

•

V5V_OT detected

Wake up Via VIF

Wake up via SPI

Target

CYCLIC_

WAKEUP

•

OSC STUCK detected

•

V5V_OT detected

OFF

VB > POR threshold + hysteresis

CYCLIC_COUNT

Performs count

in order to

cyclically wake-

up the system

CYCLIC_

WAKEUP

CYCLIC_WAKEUP routine finished without internal fault

detected

Wake up Via VIF

Wake up via SPI

Target

Cyclic wakeup

timer as

configured

during NORMAL

mode

NORMAL

GO2SLP command validated AND CYCLIC_WAKEUP

timer enabled

(GEN_CFG5.WAKEUP_CYCLIC_ENB=1)

L9965T/L9965TS

Functional description

DS14987 - Rev 1

page 12/62

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