07XSC200 datasheet(27/51 Pages) FREESCALE

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Analog Integrated Circuit Device Data



Freescale Semiconductor

07XSC200

Figure 12. Operating Modes

5.2.1

Sleep Mode

The 07XSC200 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, CLOCK_ON and IN_ON[0:1] 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].

In the event of an external VPWR supply disconnect, an unexpected current consumption may sink on the VDD supply pin (In

Sleep state). This current leakage is about 70 mA instead of 5.0 µA and it may impact the device reliability. The device recovers

its normal operational mode once VPWR is reconnected.

Table 5. 07XSC200 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 time-out 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 auto-retry

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 (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=1)

and (fault=1)

(fail=0)

and

(wake-up=1)

and (fault=0)

(fail=1)

and

(wake-up=1)

and (fault=0)

07XSC200 Datasheet(PDF) 27 Page - Freescale Semiconductor, Inc

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