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參數(shù)資料
| 型號(hào)： | P89LPC9241FDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-bit microcontroller with accelerated two-clock 80C51 core 2 kB-4 kB-8 kB 3 V byte-erasable flash with 8-bit ADC |
| 中文描述： | MICROCONTROLLER, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT360-1, TSSOP-20 |
| 文件頁(yè)數(shù)： | 28/75頁(yè) |
| 文件大?。?/td> | 1612K |
| 代理商： | P89LPC9241FDH |
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P89LPC92X1
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 1 December 2010
34 of 75
NXP Semiconductors
P89LPC9201/9211/922A1/9241/
8-bit microcontroller with 8-bit ADC
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.
BOD reset is always on except in total Power-down mode. It could not be disabled in
software. BOD interrupt may be enabled or disabled in software. BOD FLASH is always
on, except in Power-down modes and could not be disabled in software.
BOD reset and BOD interrupt, each has four trip voltage levels. BOE1 bit (UCFG1.5) and
BOE0 bit (UCFG1.3) are used as trip point configuration bits of BOD reset. BOICFG1 bit
and BOICFG0 bit 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 voltage of 2.4 V. Please
refer to P89LPC9201/9211/922A1/9241/9251 User manual for detail configurations.
If brownout detection is enabled the brownout condition occurs when VDD falls below the
brownout trip voltage and is negated when VDD rises above the brownout trip voltage.
For correct activation of brownout detect, the VDD rise and fall times must be observed.
Please see Table 12 “Static characteristics” for specifications.
7.17.2 Power-on detection
The Power-on detect has a function similar to the brownout detect, but is designed to work
as power comes up initially, before the power supply voltage reaches a level where
brownout detect can work. The POF flag in the RSTSRC register is set to indicate an
initial power-up condition. The POF flag will remain set until cleared by software.
7.18 Power reduction modes
The P89LPC9201/9211/922A1/9241/9251 supports three different power reduction
modes. These modes are Idle mode, Power-down mode, and total Power-down mode.
7.18.1 Idle mode
Idle mode leaves peripherals running in order to allow them to activate the processor
when an interrupt is generated. Any enabled interrupt source or reset may terminate Idle
mode.
7.18.2 Power-down mode
The Power-down mode stops the oscillator in order to minimize power consumption. The
P89LPC9201/9211/922A1/9241/9251 exits Power-down mode via any reset, or certain
interrupts. In Power-down mode, the power supply voltage may be reduced to the data
retention supply voltage VDDR. This retains the RAM contents at the point where
Power-down mode was entered. SFR contents are not guaranteed after VDD has been
lowered to VDDR, therefore it is highly recommended to wake-up the processor via reset in
this case. VDD must be raised to within the operating range before the Power-down mode
is exited.
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| P89LPC9241FDH,112 | 功能描述:8位微控制器 -MCU MCU 8-Bit CISC 4KB Flash2.5V/3.3V 20Pin 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 |
| P89LPC924FDH | 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 4K FLASH TSSOP20 |
| P89LPC924FDH,518 | 功能描述:8位微控制器 -MCU 4K FL/256B 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 |
| P89LPC924FDH,529 | 功能描述:8位微控制器 -MCU ORDER P89LPC924FDH-T T/R 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 |
| P89LPC924FDH518 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 18MHZ TSSOP-20 |
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