參數(shù)資料
型號(hào)： P89LPC912
廠商： NXP Semiconductors N.V.
英文描述： 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
中文描述： 8位微控制器兩個(gè)小時(shí)80C51的核心具有1KB 3伏閃光的128字節(jié)RAM
文件頁(yè)數(shù)： 36/63頁(yè)
文件大小： 314K
代理商： P89LPC912
Philips Semiconductors
P89LPC912/913/914
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 03 — 17 December 2004
36 of 63
9397 750 14468
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 configured 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 (P80LPC913, P89LPC914).
For every reset source, there is a flag in the Reset Register, RSTSRC. The user can
read this register to determine the most recent reset source. These flag bits can be
cleared in software by writing a ‘0’ to the corresponding bit. More than one flag bit
may be set:
During a power-on reset, both POF and BOF are set but the other flag bits are
cleared.
For any other reset, previously set flag bits that have not been cleared will remain
set.
9.15 Timers/counters 0 and 1
The P89LPC912/913/914 devices have two general purpose counter/timers which
are upward compatible with the standard 80C51 Timer 0 and Timer 1. An option to
automatically toggle the T0 pin upon timer overflow has been added (P89LPC912,
P89LPC914). In the ‘Timer’ function, the register is incremented every machine cycle.
In the ‘Counter’ function, the register of Timer 0 is incremented in response to a
1-to-0 transition at its external input pin, T0. This external input is sampled once very
machine cycle.
Timer 0 has four operating modes (modes 0, 1, 2, and 3) on the P89LPC913).
Timer 0 has five operating modes (modes 0, 1, 2, 3, and 6 on the P89LPC912 and
P89LPC914.
Timer 1 has four operating modes (modes 0, 1, 2, and 3) on all devices. Modes 0, 1,
and 2 are the same for both Timers/Counters. Mode 3 is different.
9.15.1
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 configured
as a 13-bit register. Mode 0 operation is the same for Timer 0 and Timer 1.
9.15.2
Mode 1
Mode 1 is the same as Mode 0, except that all 16 bits of the timer register are used.
9.15.3
Mode 2
Mode 2 configures the Timer register as an 8-bit Counter with automatic reload.
Mode 2 operation is the same for Timer 0 and Timer 1.
相關(guān)PDF資料
PDF描述
P89LPC913 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
P89LPC914 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
P89LPC914FDH 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
P89LPC924 8-bit microcontrollers with accelerated two-clock 80C51 core 4 kB/8 kB 3 V low-power Flash with 8-bit A/D converter
P89LPC925 8-bit microcontrollers with accelerated two-clock 80C51 core 4 kB/8 kB 3 V low-power Flash with 8-bit A/D converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
P89LPC912FDH 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 1K FLASH TSSOP14 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 1K FLASH, TSSOP14
P89LPC912FDH,129 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(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
P89LPC912FDH129 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 18MHZ TSSOP-14
P89LPC912HDH 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
P89LPC913 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
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