參數(shù)資料
型號(hào): P89LPC938FA,129
廠商: NXP Semiconductors
文件頁數(shù): 13/68頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 8K 28-PLCC
產(chǎn)品培訓(xùn)模塊: Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標(biāo)準(zhǔn)包裝: 37
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,LED,POR,PWM,WDT
輸入/輸出數(shù): 26
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 512 x 8
RAM 容量: 768 x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-LCC(J 形引線)
包裝: 管件
配用: 622-1014-ND - BOARD FOR LPC9XX TSSOP
622-1011-ND - BOARD FOR LPC938 TSSOP
622-1008-ND - BOARD FOR LPC9103 10-HVSON
622-1006-ND - SOCKET ADAPTER BOARD
568-4000-ND - DEMO BOARD SPI/I2C TO DUAL UART
568-3510-ND - DEMO BOARD SPI/I2C TO UART
568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X
568-1758-ND - BOARD EVAL FOR LPC93X MCU FAMILY
其它名稱: 568-2252-5
935278545129
P89LPC938FA-S
9397 750 14051
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 25 February 2005
20 of 68
Philips Semiconductors
P89LPC938
8-bit microcontroller with 10-bit A/D converter
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 P89LPC938 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.
7.5 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.
7.6 External clock input option
In this conguration, the processor clock is derived from an external source driving the
XTAL1/P3.1 pin. The rate may be from 0 Hz up to 18 MHz. The XTAL2/P3.0 pin may be
used as a standard port pin or a clock output. 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 the minimum
specied operating voltage. When using an oscillator frequency above 12 MHz, in
some applications, an external brownout detect circuit may be required to hold the
device in reset when VDD falls below the minimum specied operating voltage.
Fig 6.
Block diagram of oscillator control.
÷2
002aab102
RTC
ADC0
CPU
WDT
DIVM
CCLK
UART
OSCCLK
I2C-BUS
PCLK
TIMER 0 AND
TIMER 1
HIGH FREQUENCY
MEDIUM FREQUENCY
LOW FREQUENCY
XTAL1
XTAL2
RC
OSCILLATOR
WATCHDOG
OSCILLATOR
(7.3728 MHz
±1 %)
PCLK
RCCLK
SPI
CCU
32
× PLL
(400 kHz
+30 % 20 %)
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