P89LPC915_916_917 NXP Semiconductors, P89LPC915_916_917 Datasheet - Page 54
P89LPC915_916_917
Manufacturer Part Number
P89LPC915_916_917
Description
The P89LPC915/916/917 are single-chip microcontrollers, available in low-cost packages,based on a high performance processor architecture that executes instructions in two tofour clocks, six times the rate of standard 80C51 devices
Manufacturer
NXP Semiconductors
Datasheet
1.P89LPC915_916_917.pdf
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P89LPC915_916_917_5
Product data sheet
9.4.1 Fixed channel, single conversion mode
9.4.2 Fixed channel, continuous conversion mode
9.4.3 Auto scan, single conversion mode
9.3 Block diagram
9.4 A/D operating modes
A single input channel can be selected for conversion. A single conversion will be
performed and the result placed in the result register which corresponds to the selected
input channel. An interrupt, if enabled, will be generated after the conversion completes.
A single input channel can be selected for continuous conversion. The results of the
conversions will be sequentially placed in the four result registers. An interrupt, if enabled,
will be generated after every four conversions. Additional conversion results will again
cycle through the four result registers, overwriting the previous results. Continuous
conversions continue until terminated by the user.
Any combination of the four input channels can be selected for conversion. A single
conversion of each selected input will be performed and the result placed in the result
register which corresponds to the selected input channel. An interrupt, if enabled, will be
generated after all selected channels have been converted. If only a single channel is
selected this is equivalent to single channel, single conversion mode.
Fig 22. ADC block diagram
INPUT
INPUT
MUX
MUX
Rev. 05 — 15 December 2009
8-bit microcontrollers with accelerated two-clock 80C51 core
comp
comp
+
–
+
–
P89LPC915/916/917
DAC1
DAC0
CCLK
SAR
SAR
8
8
© NXP B.V. 2009. All rights reserved.
CONTROL
LOGIC
002aab080
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