參數(shù)資料
型號: P89LPC902FN,129
廠商: NXP Semiconductors
文件頁數(shù): 28/53頁
文件大?。?/td> 0K
描述: IC 80C51 MCU FLASH 1K 8-DIP
產(chǎn)品培訓模塊: Migrating from 8/16-Bit MCUs to 32-Bit ARMs
標準包裝: 250
系列: LPC900
核心處理器: 8051
芯體尺寸: 8-位
速度: 7.3728MHz
外圍設備: 欠壓檢測/復位,LED,POR,WDT
輸入/輸出數(shù): 6
程序存儲器容量: 1KB(1K x 8)
程序存儲器類型: 閃存
RAM 容量: 128 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: 8-DIP(0.300",7.62mm)
包裝: 管件
配用: 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
其它名稱: 568-2246-5
935273899129
P89LPC902FN-S
Philips Semiconductors
P89LPC901/902/903
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 05 — 17 December 2004
34 of 53
9397 750 14465
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 congured via UCFG1. This option
must be used for an oscillator frequency above 12 MHz.)
Power-on detect
Brownout detect
Watchdog Timer
Software reset
UART break character detect reset (P80LPC903).
For every reset source, there is a ag in the Reset Register, RSTSRC. The user can
read this register to determine the most recent reset source. These ag bits can be
cleared in software by writing a ‘0’ to the corresponding bit. More than one ag bit
may be set:
During a power-on reset, both POF and BOF are set but the other ag bits are
cleared.
For any other reset, previously set ag bits that have not been cleared will remain
set.
8.16 Timers/counters 0 and 1
The P89LPC901/902/903 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.
8.16.1
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 congured
as a 13-bit register. Mode 0 operation is the same for Timer 0 and Timer 1.
8.16.2
Mode 1
Mode 1 is the same as Mode 0, except that all 16 bits of the timer register are used.
8.16.3
Mode 2
Mode 2 congures the Timer register as an 8-bit Counter with automatic reload.
Mode 2 operation is the same for Timer 0 and Timer 1.
8.16.4
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.
8.16.5
Mode 6 (P89LPC901)
In this mode, the corresponding timer can be changed to a PWM with a full period of
256 timer clocks.
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