HC05V7GRSSLASHD datasheet(82/170 Pages) NXP

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SECTION 10: A/D CONVERTER

Page 68

MC68HC05V7 Specification Rev. 1.0

10.6

A/D DURING WAIT MODE

The A/D converter continues normal operation during WAIT mode. To decrease power

consumption during WAIT, it is recommended that both the ADON and ADRC bits in the A/

D Status and Control Registers be cleared if the A/D converter is not being used. If the A/

D converter is in use and the system clock rate is above 1.0 MHz, it is recommended that

the ADRC bit be cleared.

NOTE:

As the A/D converter continues to function normally in WAIT mode, the

COCO bit is not cleared.

10.7

A/D DURING STOP MODE

In STOP mode the comparator and charge pump are turned off and the A/D ceases to

function. Any pending conversion is aborted. When the clocks begin oscillation upon

leaving the STOP mode, a finite amount of time passes before the A/D circuits stabilize

enough to provide conversions to the specified accuracy. Normally, the delays built into the

device when coming out of STOP mode are sufficient for this purpose, therefore no explicit

delays need to be built into the software.

NOTE:

Although the comparator and charge pump are disabled in STOP mode,

the A/D Data and Status/Control registers are not modified. Disabling the

A/D prior to entering STOP mode will not effect the STOP mode current

consumption.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

HC05V7GRS/D Datasheet(PDF) 82 Page - NXP Semiconductors