P89LPC952FA datasheet(38/66 Pages) PHILIPS

38 / 66 page

9397 750 14716

Preliminary data sheet

Rev. 01— 16 September 2005

38 of 66

Philips Semiconductors

P89LPC952

8-bit microcontroller with 10-bit ADC

7.22 Analog comparators

Two analog comparators are provided on the P89LPC952. Input and output options allow

use of the comparators in a number of different conﬁgurations. Comparator operation is

such that the output is a logical one (which may be read in a register and/or routed to a

pin) when the positive input (one of two selectable pins) is greater than the negative input

(selectable from a pin or an internal reference voltage). Otherwise the output is a zero.

Each comparator may be conﬁgured to cause an interrupt when the output value changes.

The overall connections to both comparators are shown in Figure 14. The comparators

function to VDD = 2.4 V.

When each comparator is ﬁrst enabled, the comparator output and interrupt ﬂag are not

guaranteed to be stable for 10

µs. The corresponding comparator interrupt should not be

enabled during that time, and the comparator interrupt ﬂag must be cleared before the

interrupt is enabled in order to prevent an immediate interrupt service.

Fig 13. SPI single master multiple slaves conﬁguration

002aaa903

master

slave

8-BIT SHIFT

SPI CLOCK

GENERATOR

8-BIT SHIFT

MISO

MOSI

SPICLK

port

MISO

MOSI

SPICLK

slave

8-BIT SHIFT

MISO

MOSI

SPICLK

P89LPC952FA 数据表(PDF) 38 Page - NXP Semiconductors

P89LPC952FA 数据表(HTML) 38 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

数据表下载

链接网址

P89LPC952FA 数据表(PDF) 38 Page - NXP Semiconductors

P89LPC952FA 数据表(HTML) 38 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

数据表 下载

链接网址

数据表下载