参数资料
型号: P89LPC954FBD44,151
厂商: NXP Semiconductors
文件页数: 35/69页
文件大小: 0K
描述: IC 80C51 MCU FLASH 16K 44LQFP
标准包装: 160
系列: LPC900
核心处理器: 8051
芯体尺寸: 8-位
速度: 18MHz
连通性: I²C,SPI,UART/USART
外围设备: 欠压检测/复位,POR,PWM,WDT
输入/输出数: 40
程序存储器容量: 16KB(16K x 8)
程序存储器类型: 闪存
RAM 容量: 512 x 8
电压 - 电源 (Vcc/Vdd): 2.4 V ~ 3.6 V
数据转换器: A/D 8x10b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LQFP
包装: 托盘
配用: 568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X
其它名称: 568-7917
568-7917-ND
568-8269
935284303151
P89LPC954FBD44,151-ND
P89LPC954FBD44-S
P89LPC954FBD44-S-ND
P89LPC952_954_4
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 04 — 24 July 2008
40 of 69
NXP Semiconductors
P89LPC952/954
8-bit microcontroller with 10-bit ADC
7.22 Analog comparators
Two analog comparators are provided on the P89LPC952/954. Input and output options
allow use of the comparators in a number of different congurations. Comparator
operation is such that the output is a logical one (which may be read in a register and/or
routed to a pin) when the positive input (one of two selectable pins) is greater than the
negative input (selectable from a pin or an internal reference voltage). Otherwise the
output is a zero. Each comparator may be congured to cause an interrupt when the
output value changes.
The overall connections to both comparators are shown in Figure 15. The comparators
function to VDD = 2.4 V.
When each comparator is rst enabled, the comparator output and interrupt ag are not
guaranteed to be stable for 10
s. The corresponding comparator interrupt should not be
enabled during that time, and the comparator interrupt ag must be cleared before the
interrupt is enabled in order to prevent an immediate interrupt service.
Fig 14. SPI single master multiple slaves conguration
002aaa903
master
slave
8-BIT SHIFT
REGISTER
SPI CLOCK
GENERATOR
8-BIT SHIFT
REGISTER
MISO
MOSI
SPICLK
port
MISO
MOSI
SPICLK
SS
slave
8-BIT SHIFT
REGISTER
MISO
MOSI
SPICLK
SS
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