- 您現在的位置：買賣IC網 > PDF目錄382369 > P89LPC920 (NXP Semiconductors N.V.) 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM PDF資料下載
參數資料
| 型號： | P89LPC920 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM |
| 中文描述： | 8位微控制器兩個小時80C51的核心2鍵盤/ 4 KB的/ 8 KB的3伏的低功耗Flash 256 - RAM的字節數據 |
| 文件頁數： | 28/45頁 |
| 文件大?。?/td> | 877K |
| 代理商： | P89LPC920 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁
Philips Semiconductors
P89LPC920/921/922
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 06 — 21 November 2003
28 of 45
9397 750 12285
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
8.20 Analog comparators
Two analog comparators are provided on the P89LPC920/921/922. 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 10
. 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, COx, 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, CMFx.
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, CMFx, after disabling the
comparator.
8.20.1
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 10. Comparator input and output connections.
Comparator 1
CP1
CN1
(P0.4) CIN1A
(P0.3) CIN1B
(P0.5) CMPREF
VREF
OE1
Change Detect
CO1
CMF1
Interrupt
002aaa422
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 |
|---|---|
| P89LPC931 | 8-bit microcontrollers with two-clock 80C51 core 4 kB/8 kB 3 V Flash with 256-byte data RAM |
| P8C15416Y-12 | IC-8-BIT CMOS CPU |
| P903 | |
| P90C101ABA | 16-Bit Microcontroller |
| P90C101ABB | 16-Bit Microcontroller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| P89LPC9201 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 2 kB/4 kB/8 kB 3 V byte-erasable flash with 8-bit ADC |
| P89LPC9201FDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 2 kB/4 kB/8 kB 3 V byte-erasable flash with 8-bit ADC |
| P89LPC9201FDH,112 | 功能描述:8位微控制器 -MCU MCU 8-Bit CISC 2KB Flash2.5V/3.3V 20Pin 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 |
| P89LPC920FDH | 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 2K FLASH TSSOP20 |
| P89LPC920FDH,529 | 功能描述:8位微控制器 -MCU 80C51 2K FL 256B RAM 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 |
發布緊急采購，3分鐘左右您將得到回復。