參數(shù)資料
型號(hào)： P89LPC9402FBD,557
廠商： NXP Semiconductors
文件頁數(shù)： 10/60頁
文件大?。?/td> 0K
描述： IC 80C51 MCU FLASH 8K 64-LQFP
標(biāo)準(zhǔn)包裝： 450
系列： LPC900
核心處理器： 8051
芯體尺寸： 8-位
速度： 18MHz
連通性： I²C，SPI，UART/USART
外圍設(shè)備： 欠壓檢測/復(fù)位，LCD，LED，POR，PWM，WDT
輸入/輸出數(shù)： 23
程序存儲(chǔ)器容量： 8KB（8K 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： 64-LQFP
包裝： 托盤
其它名稱： 935288631557
P89LPC9402_1
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 01 — 22 April 2009
18 of 60
NXP Semiconductors
P89LPC9402
8-bit microcontroller with accelerated two-clock 80C51 core
7.3.4 Clock output
The P89LPC9402 supports a user-selectable clock output function on the
XTAL2/CLKOUT pin when crystal oscillator is not being used. This condition occurs if
another clock source has been selected (on-chip RC oscillator, watchdog oscillator,
external clock input on XTAL1) and if the RTC and WDT are not using the crystal oscillator
as their clock source. This allows external devices to synchronize to the P89LPC9402.
This output is enabled by the ENCLK bit in the TRIM register.
The frequency of this clock output is 1
2 that of the CCLK. If the clock output is not needed
in Idle mode, it may be turned off prior to entering Idle, saving additional power.
7.4 On-chip RC oscillator option
The P89LPC9402 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 preprogrammed 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. When the clock doubler option is enabled (UCFG2.7 = 1), the output
frequency is 14.746 MHz. 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. When clock doubler option is enabled, BOE1 bit (UCFG1.5) and BOE0
bit (UCFG1.3) are required to hold the device in reset at power-up until VDD has reached
its specied level.
7.5 Watchdog oscillator option
The watchdog has a separate oscillator which has a frequency of 400 kHz, calibrated to
± 5 % at room temperature. This oscillator can be used to save power when a high clock
frequency is not needed.
7.6 External clock input option
In this conguration, the processor clock is derived from an external source driving the
P3.1/XTAL1 pin. The rate may be from 0 Hz up to 18 MHz. The P3.0/XTAL2 pin may be
used as a standard port pin or a clock output. When using an oscillator frequency above
12 MHz, BOE1 bit (UCFG1.5) and BOE0 bit (UCFG1.3) are required to hold the device in
reset at power-up until VDD has reached its specied level.
7.7 Clock sources switch on the y
P89LPC9402 can implement clock source switch in any sources of watchdog oscillator,
7 MHz/14 MHz IRC oscillator, external clock source (external crystal or external clock
input) during code is running. CLKOK bit in CLKCON register is used to indicate the clock
switch status. CLKOK is cleared when starting clock source switch and set when
completed. Notice that when CLKOK is ‘0’, writing to CLKCON register is not allowed.
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P89LPC9408 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with two-clock 80C51 core 8 kB 3 V byte-erasable flash, 32 segment x 4 LCD driver, 10-bit ADC
P89LPC9408FBD 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD DRIVER 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
P89LPC9408FBD,557 功能描述:8位微控制器 -MCU 8K FL/10B ADC LCD 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
P89LPC9408FBD557 制造商:NXP Semiconductors 功能描述:P89LPC9408FBD/LQFP64/TRAYDPM//
P89LPC952 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 8 kB 3 V byte-erasable flash with 10-bit ADC
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