P89LPC915FDH datasheet(56/75 Pages) NXP

Part #	P89LPC915FDH

Description	8-bit microcontrollers with accelerated two-clock 80C51 core 2 kB 3 V flash with 8-bit A/D converter

PDF	75 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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56 / 75 page

P89LPC915_916_917_5

Product data sheet

Rev. 05 — 15 December 2009

56 of 75

NXP Semiconductors

P89LPC915/916/917

8-bit microcontrollers with accelerated two-clock 80C51 core

9.7 DAC output to a port pin with high output impedance

The A/D converter’s DAC block can be output to a port pin. In this mode, the AD1DAT3

(written to AD1DAT3), the DAC output will appear on the channel 3 pin.

9.8 Clock divider

The A/D converter requires that its internal clock source be in the range of 500 kHz to

3.3 MHz to maintain accuracy. A programmable clock divider that divides the clock

from 1 to 8 is provided for this purpose.

9.9 Power-down and Idle mode

In Idle mode the A/C converter, if enabled, will continue to function and can cause the

device to exit Idle mode when the conversion is completed if the A/D interrupt is enabled.

In Power-down mode or Total Power-down mode, the A/D does not function. If the A/D is

enabled, it will consume power. Power can be reduced by disabling the A/D.

P89LPC915FDH Datasheet(PDF) 56 Page - NXP Semiconductors