參數資料
型號： P89LPC936
廠商： NXP Semiconductors N.V.
元件分類： 8位微控制器
英文描述： 8-BIT SINGLE CHIP MICROCONTROLLERS
中文描述： 8位單晶片微控制器
文件頁數： 46/75頁
文件大?。?/td> 372K
代理商： P89LPC936
9397 750 15113
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 06 — 20 June 2005
46 of 75
Philips Semiconductors
P89LPC933/934/935/936
8-bit microcontroller with accelerated two-clock 80C51 core
8.23 Analog comparators
Two analog comparators are provided on the P89LPC933/934/935/936. Input and output
options allow use of the comparators in a number of different configurations. Comparator
operation is such that the output is a logic 1 (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 21
. The comparators
function to V
DD
= 2.4 V.
When each comparator is first enabled, the comparator output and interrupt flag are not
guaranteed to be stable for 10 microseconds. 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.
When a comparator is disabled the comparator’s output, COn, goes HIGH. If the
comparator output was LOW and then is disabled, the resulting transition of the
comparator output from a LOW to HIGH state will set the comparator flag, CMFn. This will
cause an interrupt if the comparator interrupt is enabled. The user should therefore
disable the comparator interrupt prior to disabling the comparator. Additionally, the user
should clear the comparator flag, CMFn, after disabling the comparator.
8.23.1
Internal reference voltage
An internal reference voltage generator may supply a default reference when a single
comparator input pin is used. The value of the internal reference voltage, referred to as
V
REF
, is 1.23 V
±
10 %.
Fig 21. Comparator input and output connections
comparator 1
CP1
CN1
(P0.4) CIN1A
(P0.3) CIN1B
(P0.5) CMPREF
V
REF
OE1
change detect
CO1
CMF1
interrupt
002aaa904
CMP1 (P0.6)
EC
change detect
CMF2
comparator 2
OE2
CO2
CMP2 (P0.0)
CP2
CN2
(P0.2) CIN2A
(P0.1) CIN2B
相關PDF資料
PDF描述
P89LPC938 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable Flash with 10-bit A/D converter
P89LPC938FA 8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable Flash with 10-bit A/D converter
P89LV51RB2BBC 8-bit 80C51 3 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
P89LV51RB2 8-bit 80C51 3 V low power 16/32/64 kB Flash microcontroller with 1 kB RAM
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相關代理商/技術參數
參數描述
P89LPC9361FDH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 4 kB/8 kB/16 kB 3 V byte-erasable flash with 8-bit ADCs
P89LPC9361FDH,518 功能描述:8位微控制器 -MCU MCU 8-Bit 80C51 8KB Flash 2.5V/3.3V RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
P89LPC936FA 制造商:NXP Semiconductors 功能描述: 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 16K FLASH PLCC28
P89LPC936FA,529 功能描述:8位微控制器 -MCU 80C51 16K FL 768B RM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
P89LPC936FA529 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 18MHZ LCC-28
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