- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄369944 > P89LPC904 (NXP Semiconductors N.V.) 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter PDF資料下載
參數(shù)資料
| 型號： | 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位微控制器兩個小時加速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 |
| 文件頁數(shù)： | 13/41頁 |
| 文件大?。?/td> | 190K |
| 代理商： | P89LPC904 |
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頁當前第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
Philips Semiconductors
P89LPC904
8-bit microcontrollers with two-clock accelerated 80C51 core
Preliminary data
Rev. 02 — 25 June 2004
13 of 41
9397 750 13521
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.
Functional description
Remark:
Please refer to the P89LPC904 User’s Manualfor a more detailed
functional description.
8.1 Enhanced CPU
The P89LPC904 uses an enhanced 80C51 CPU which runs at 6 times the speed of
standard 80C51 devices. A machine cycle consists of two CPU clock cycles, and
most instructions execute in one or two machine cycles.
8.2 Clocks
8.2.1
Clock definitions
The P89LPC904 device has internal clocks as defined below:
OSCCLK —
Input to the DIVM clock divider. OSCCLK is selected from one of the
clock sources (see
Figure 4
) and can also be optionally divided to a slower frequency
(see
Section 8.7 “CPU CLOCK (CCLK) modification: DIVM register”
).
Note:
f
ext
is defined as the OSCCLK frequency.
CCLK —
CPU clock; output of the clock divider. There are two CCLK cycles per
machine cycle, and most instructions are executed in one to two machine cycles (two
or four CCLK cycles).
RCCLK —
The internal 7.373 MHz RC oscillator output.
PCLK —
Clock for the various peripheral devices and is CCLK/2
8.2.2
CPU clock (CCLK)
The P89LPC904 provides several user-selectable options in generating the CPU
clock. This allows optimization for a range of needs from high precision to lowest
possible cost. These options are configured when the FLASH is programmed and
include an on-chip Watchdog oscillator and an on-chip RC oscillator.
8.3 On-chip RC oscillator option
The P89LPC904 has a 6-bit TRIM register that can be used to tune the frequency of
the RC oscillator. During reset, the TRIM value is initialized to a factory
pre-programmed value to adjust the oscillator frequency to 7.373 MHz,
±
1 % at room
temperature. End-user applications can write to the Trim register to adjust the on-chip
RC oscillator to other frequencies. If CCLK is 8 MHz or slower, the CLKLP SFR bit
(AUXR1.7) can be set to logic 1 to reduce power consumption. On reset, CLKLP is
logic 0 allowing highest performance access. This bit can then be set in software if
CCLK is running at 8 MHz or slower.
8.4 Watchdog oscillator option
The Watchdog has a separate oscillator which has a frequency of 400 kHz. This
oscillator can be used to save power when a high clock frequency is not needed.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P89LPC904FD | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
| P89LPC9102 | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
| P89LPC9107 | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
| P89LPC9107FDH | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
| P89LPC9102FTK | 8-bit microcontrollers with two-clock accelerated 80C51 core 1 kB 3 V byte-erasable Flash with 8-bit A/D converter |
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 最大時鐘頻率:50 MHz 程序存儲器大小: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 最大時鐘頻率:50 MHz 程序存儲器大小: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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
發(fā)布緊急采購，3分鐘左右您將得到回復。