參數(shù)資料
型號(hào)： P89LPC904
廠商： NXP Semiconductors N.V.
元件分類： 8位微控制器
英文描述： 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter
中文描述： 8位微控制器兩個(gè)小時(shí)加速80C51的核心具有1KB 3伏字節(jié)可擦除閃存的8位A / D轉(zhuǎn)換器
文件頁(yè)數(shù)： 25/41頁(yè)
文件大?。?/td> 190K
代理商： P89LPC904
Philips Semiconductors
P89LPC904
8-bit microcontrollers with two-clock accelerated 80C51 core
Preliminary data
Rev. 02 — 25 June 2004
25 of 41
9397 750 13521
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Reset can be triggered from the following sources:
External reset pin (during power-up or if user configured via UCFG1)
Power-on detect
Brownout detect
Watchdog Timer
Software reset
UART break character detect reset.
For every reset source, there is a flag in the Reset Register, RSTSRC. The user can
read this register to determine the most recent reset source. These flag bits can be
cleared in software by writing a logic 0 to the corresponding bit. More than one flag bit
may be set:
During a power-on reset, both POF and BOF are set but the other flag bits are
cleared.
For any other reset, previously set flag bits that have not been cleared will remain
set.
8.17 Timers/counters 0 and 1
The P89LPC904 has two general purpose timers which are similar to the standard
80C51 Timer 0 and Timer 1. These timers have four operating modes (modes 0, 1, 2,
and 3). Modes 0, 1, and 2 are the same for both Timers. Mode 3 is different.
8.17.1
Mode 0
Putting either Timer into Mode 0 makes it look like an 8048 Timer, which is an 8-bit
Counter with a divide-by-32 prescaler. In this mode, the Timer register is configured
as a 13-bit register. Mode 0 operation is the same for Timer 0 and Timer 1.
8.17.2
Mode 1
Mode 1 is the same as Mode 0, except that all 16 bits of the timer register are used.
8.17.3
Mode 2
Mode 2 configures the Timer register as an 8-bit Counter with automatic reload.
Mode 2 operation is the same for Timer 0 and Timer 1.
8.17.4
Mode 3
When Timer 1 is in Mode 3 it is stopped. Timer 0 in Mode 3 forms two separate 8-bit
counters and is provided for applications that require an extra 8-bit timer. When
Timer 1 is in Mode 3 it can still be used by the serial port as a baud rate generator.
8.18 Real-Time clock/system timer
The P89LPC904 has a simple Real-Time clock that allows a user to continue running
an accurate timer while the rest of the device is powered-down. The Real-Time clock
can be a wake-up or an interrupt source. The Real-Time clock is a 23-bit down
counter comprised of a 7-bit prescaler and a 16-bit loadable down counter. When it
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC904FD 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter
P89LPC904FD,529 功能描述:8位微控制器 -MCU 1K FL/128B RAM/ADC/STD P/OUT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
P89LPC904FN,129 功能描述:8位微控制器 -MCU 1K FL/128B RAM/ADC/STD P/OUT RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
P89LPC906 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
P89LPC906FD 功能描述:8位微控制器 -MCU 80C51 1K FL 128B RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) 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(fēng)格:SMD/SMT
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