參數(shù)資料
型號(hào)： P89LPC921FDH,518
廠商： NXP Semiconductors
文件頁(yè)數(shù)： 6/46頁(yè)
文件大小： 0K
描述： IC 80C51 MCU 4KB FLASH 20TSSOP
標(biāo)準(zhǔn)包裝： 2,500
系列： LPC900
核心處理器： 8051
芯體尺寸： 8-位
速度： 18MHz
連通性： I²C，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，LED，POR，PWM，WDT
輸入/輸出數(shù)： 18
程序存儲(chǔ)器容量： 4KB（4K x 8）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 2.4 V ~ 3.6 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
包裝： 帶卷 (TR)
Philips Semiconductors
P89LPC920/921/922/9221
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 08 — 15 December 2004
14 of 46
9397 750 14469
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.
Functional description
Remark: Please refer to the
P89LPC920/921/922/9221 User’s Manual for a more
detailed functional description.
8.1 Enhanced CPU
The P89LPC920/921/922/9221 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 denitions
The P89LPC920/921/922/9221 device has several internal clocks as dened below:
OSCCLK — Input to the DIVM clock divider. OSCCLK is selected from one of four
clock sources (see Figure 5) and can also be optionally divided to a slower frequency
Note: fosc is dened 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 (OSCCLK)
The P89LPC920/921/922/9221 provides several user-selectable oscillator options in
generating the CPU clock. This allows optimization for a range of needs from high
precision to lowest possible cost. These options are congured when the FLASH is
programmed and include an on-chip watchdog oscillator, an on-chip RC oscillator, an
oscillator using an external crystal, or an external clock source. The crystal oscillator
can be optimized for low, medium, or high frequency crystals covering a range from
20 kHz to 12 MHz.
8.2.3
Low speed oscillator option
This option supports an external crystal in the range of 20 kHz to 100 kHz. Ceramic
resonators are also supported in this conguration.
8.2.4
Medium speed oscillator option
This option supports an external crystal in the range of 100 kHz to 4 MHz. Ceramic
resonators are also supported in this conguration.
8.2.5
High speed oscillator option
This option supports an external crystal in the range of 4 MHz to 18 MHz. Ceramic
resonators are also supported in this conguration. When using an oscillator
frequency above 12 MHz, the reset input function of P1.5 must be enabled. An
external circuit is required to hold the device in reset at power-up until VDD has
reached its specied level. When system power is removed VDD will fall below
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC921FN,112 功能描述:8位微控制器 -MCU 80C51 4K FL 256B 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
P89LPC922 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontrollers with two-clock 80C51 core 2 kB/4 kB/8 kB 3 V low-power Flash with 256-byte data RAM
P89LPC9221FDH,512 功能描述:8位微控制器 -MCU 80C51 8K FL 256B 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
P89LPC9221FDH,518 功能描述:8位微控制器 -MCU 8B MCU 80C51 2/4/8KB 3V FL 256B 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
P89LPC9221FN 功能描述:8位微控制器 -MCU 80C51 8K FL 256B 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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