33991 datasheet(32/36 Pages) FREESCALE

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Analog Integrated Circuit Device Data

Freescale Semiconductor

33991

TIMING DESCRIPTIONS AND DIAGRAMS

SAMPLE CODE

/* Step 8 */

Command_Gauge(0x80,0x03);

/* Send RTZ to Gauge 1 */

/* Step 9 */

Command_Gauge(0x10,0x00);

/* Null Read to get status */

/* Read Status until RTZ is done */

While ((status & 0x08) != 0)

{Command_Gauge(0x10,0x00);}

/* Step 10 */

Command_Gauge(0x23,0xFF);

/* Send velocity */

/* Step 11 */

Command_Gauge(0x4F,0xFF);

/* Send position to gauge0 */

/*Check SO bits for Out of Range Vpwr and Overtemperature */

If((status & 0x40) != 0)

/* If bit ST6 is logic 1 then RTZ after valid Vpwr */

If((status & 0x01) != 0)

/* If bit ST0 is logic 1 then enable driver again.

/* If ST0 continues to indicate over temperature, then shut down Gauge 0. */

/* If ST2 returns to normal, then reestablish the zero reference by RTZ command. */

/* Step 12 */

Command_Gauge(0x6F,0xFF);

/* Send position to gauge1 */

/*Check SO bits for Out of Range Vpwr and Over-Temperature */

If((status & 0x40) != 0)

/* If bit ST6 is logic 1 then RTZ after valid Vpwr */

If((status & 0x01) != 0)

/* If bit ST0 is logic 1 then enable driver again.

/* If ST0 continues to indicate Over-Temperature, then shut down Gauge 1. */

/* If ST2 returns to normal, then reestablish the zero reference by RTZ command. */

/* Step 13 */

Command_Gauge(0x40,0x00);

/* Send position to Gauge 0 */

/* Return the pointers close to zero position */

Command_Gauge(0x40,0x18);

/* Send position to Gauge 0 */

/* Move the pointer at least 24 microsteps CW to the nearest full step */

/* Step 14 */

Command_Gauge(0x60,0x00);

/* Send position to Gauge 1 */

/* Return the pointers close to zero position */

Command_Gauge(0x60,0x18);

/* Send position to Gauge 1 */

/* Move the pointer at least 24 microsteps CW to the nearest full step */

/* Check SO bit ST4 to see if Gauge 0 has moved */

If((status & 0x10) != 0)

/* If ST4 is logic 1 then Gauge 0 has moved to the first microstep */

33991 Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

33991 Datasheet(HTML) 32 Page - Freescale Semiconductor, Inc

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