33991 datasheet(30/36 Pages) FREESCALE

Part #	33991

Description	Gauge Driver Integrated Circuit

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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30 / 36 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33991

TIMING DESCRIPTIONS AND DIAGRAMS

APPLICATION INFORMATION

RTZ

Return the other Gauge to the zero stop. If the second gauge is driving a different

pointer than the first, a new RTZCR command may be required to change the Full

Step time.

Tables 7-8

PECR

Check the Status of the RTZ by sending the null

command to monitor SO bit ST3.

- Bit PE12 is the null command.

Table 3

Is ST3 logic 0? If not then gauge 1 still returning and null command should be resent.

Table 12

PECR

Disable both Gauges and go to standby bit PE0: PE1 are used to disable the gauges.

Table 3

Put the device to sleep.

- RST pin is pulled to logic 0.

Table 18. 33991 Setup, Configuration, & Usage Example (continued)

Step #

Command

Description

Reference

Figure #

33991 Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc