10XSC425 datasheet(32/56 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

10XSC425

Figure 12. Operating Modes

6.2.1

Sleep Mode

The 10XSC425 is in Sleep mode when:

•VPWR and VDD are within the normal voltage range,

• wake-up = 0,

• fail = X,

•fault = X.

This is the Default mode of the device after first applying battery voltage (VPWR) prior to any I/O transitions. This is also the state

of the device when the WAKE and RSTB and IN_ON[0:3] are logic [0]. In the Sleep mode, the output and all unused internal

circuitry, such as the internal regulator, are off to minimize draw current. In addition, all SPI-configurable features of the device

are as if set to logic [0].

Table 6. 10XSC425 Operating Modes

Mode

Wake-up Fail

Fault

Comments

Sleep

Device is in Sleep mode. All outputs are OFF.

Normal

Device is currently in Normal mode. Watchdog is active if enabled.

Fail-safe

Device is currently in Fail-safe mode due to Watchdog timeout or

VDD Failure conditions. The output states are defined with the RFS

resistor connected to FSI.

Fault

Device is currently in fault mode. The faulted output(s) is (are)

OFF. The safe autoretry circuitry is active to turn-on again the

output(s).

x = Don’t care.

Sleep

(fail = 0) and (wake-up = 1) and (fault = 0)

(wake-up = 0)

Fail-safe

Normal

(wake-up = 0)

(fail = 1) and (wake-up = 1) and (fault = 0)

(fail = 0) and (wake-up = 1) and (fault = 0)

(wake-up = 1) and

(fail = 1) and

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(fault = 0)

Fault

(wake-up = 0)

(wake-up = 1)

and (fault = 1)

(fail = 0) and

(wake-up = 1)

and (fault = 1)

(fail = 1) and



(wake-up 0 = 1)

and (fault = 1)

(fail = 0) and

(wake-up = 1)

and (fault = 0)

(fail = 1) and

(wake-up = 1)

and (fault = 0)

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