P89LPC9151FDH datasheet(61/91 Pages) NXP

61 / 91 page

P89LPC9151_61_71_2

Product data sheet

Rev. 02 — 9 February 2010

61 of 91

NXP Semiconductors

P89LPC9151/9161/9171

8-bit microcontroller with 8-bit ADC

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.

8.3 Block diagram

8.4 ADC operating modes

8.4.1 Fixed channel, single conversion mode

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.

8.4.2 Fixed channel, continuous conversion mode

A single input channel can be selected for continuous conversion. The results of the

conversions will be sequentially placed in the four result register. The user may select

whether an interrupt can be generated after every four conversions. Additional conversion

results will again cycle through the four result register, overwriting the previous results.

Continuous conversions continue until terminated by the user.

8.4.3 Auto scan, single conversion mode

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

generated after all selected channels have been converted. If only a single channel is

selected this is equivalent to single channel, single conversion mode.

8.4.4 Auto scan, continuous conversion mode

Any combination of the four input channels can be selected for conversion. A 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

Fig 21. ADC block diagram

SAR

002aaa783

cclk

comp

DAC1

INPUT

MUX

P89LPC9151FDH Datasheet(PDF) 61 Page - NXP Semiconductors

P89LPC9151FDH Datasheet(HTML) 61 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91

Datasheet Download

Link URL