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P89LPC9211FDH Datasheet(PDF) 47 Page - NXP Semiconductors |
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P89LPC9211FDH Datasheet(HTML) 47 Page - NXP Semiconductors |
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47 / 75 page  P89LPC92X1 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved. Product data sheet Rev. 2 — 1 December 2010 47 of 75 NXP Semiconductors P89LPC9201/9211/922A1/9241/ 8-bit microcontroller with 8-bit ADC temperature. The temperature sensor is measured through Anin03. Anin00, Anin01 and Anin02 are unused. A block diagram of the ADC is shown in Figure 15 “ADC block diagram”. The ADC consists of an 4-input multiplexer which feeds a sample-and-hold circuit providing an input signal to comparator inputs. The control logic in combination with the SAR drives a digital-to-analog converter which provides the other input to the comparator. The output of the comparator is fed to the SAR. 8.2 Features and benefits 8-bit, 4-channel multiplexed input, successive approximation ADC. On-chip wide range temperature sensor. Four result registers for each A/D. Six operating modes: Fixed channel, single conversion mode. Fixed channel, continuous conversion mode. Auto scan, single conversion mode. Auto scan, continuous conversion mode. Dual channel, continuous conversion mode. Single step mode. Three conversion start modes: Timer triggered start. Start immediately. Edge triggered. 8-bit conversion time of ≥1.61 μs at an A/D clock of 8.0 MHz. Interrupt or polled operation. Boundary limits interrupt. DAC output to a port pin with high output impedance. Clock divider. Power-down mode. |
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