参数资料
| 型号： | P89LPC972FDH,129 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 20/66页 |
| 文件大小： | 0K |
| 描述： | MCU 80C51 8KB FLASH 20TSSOP |
| 标准包装： | 75 |
| 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： | 18 |
| 程序存储器容量： | 8KB（8K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.4 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
| 其它名称： | 568-8748-5 P89LPC972FDH,129-ND |
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P89LPC97X
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 3 — 8 June 2010
27 of 66
NXP Semiconductors
P89LPC970/971/972
8-bit microcontroller with accelerated two-clock 80C51 core
7.17 Power management
The P89LPC970/971/972 support a variety of power management features.
Power-on detect and brownout detect are designed to prevent incorrect operation during
initial power-up and power loss or reduction during operation.
The P89LPC970/971/972 support three different power reduction modes: Idle mode,
Power-down mode, and total Power-down mode. In addition, individual on-chip
peripherals can be disabled to eliminate unnecessary dynamic power use in any
peripherals that are not required for the application.
Integrated PMU automatically adjusts internal regulators to minimize power consumption
during Idle mode, Power-down mode and total Power-down mode. In addition, the power
consumption can be further reduced in Normal or Idle mode through configuring
regulators mode according to the applications.
7.17.1 Brownout detection
The brownout detect function determines if the power supply voltage drops below a
certain level. Enhanced brownout detection has 3 independent functions: BOD reset,
BOD interrupt and BOD flash.
These three functions are disabled in Power-down mode and Total Power-down mode. In
Normal or Idle mode, BOD reset and BOD flash are always on and can not be disabled in
software. BOD interrupt may be enabled or disabled in software.
BOD reset and BOD interrupt, each has 6 levels. BOE0 to BOE2 (UCFG1[3:5]) are used
as trip point configuration bits of BOD reset. BOICFG0 to BOICFG2 in register BODCFG
are used as trip point configuration bits of BOD interrupt.
BOD reset voltage should be lower than BOD interrupt trip point. BOD flash is used for
flash programming/erase protection and has only 1 trip point at 2.4 V. Please refer to
P89LPC970/971/972 User manual for detail configurations.
If brownout detection works, the brownout condition occurs when VDD falls below the
brownout falling trip voltage and is negated when VDD rises above the brownout rising trip
voltage.
For correct activation of brownout detect, the VDD rise and fall times must be observed.
Please see Table 11 “Static characteristics” for specifications.
Table 8.
SPI/I2C/UART pin remap
Peripherals
Function
Primary pin out
Alternative pin out
SPI
SPICLK
-
P0.0
MOSI
-
P1.7
MISO
-
P1.6
SS
-P1.4
I2C
SDA
P1.3
-
SCL
P1.2
-
UART
TXD
P1.0
-
RXD
P1.1
-
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相关代理商/技术参数 |
参数描述 |
|---|---|
| P89LPC972FN | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 2 kB/4 kB/8 kB wide-voltage byte-erasable flash |
| P89LPC972FN,129 | 功能描述:8位微控制器 -MCU MCU 80C51 8KB FLASH 20DIP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| P89LPC980 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 4 kB/8 kB wide-voltage byte-erasable flash with 10-bit ADC |
| P89LPC980FDH | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 4 kB/8 kB wide-voltage byte-erasable flash with 10-bit ADC |
| P89LPC980FDH,529 | 功能描述:8位微控制器 -MCU 8b MICROCNTR ACCLRTD TWO CLK 80C51 CORE RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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