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參數(shù)資料
| 型號： | P89LPC931FDH |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit microcontrollers with two-clock 80C51 core 4 kB-8 kB 3 V Flash with 256-byte data RAM |
| 封裝： | P89LPC930FDH<SOT361-1 (TSSOP28)|<<http://www.nxp.com/packages/SOT361-1.html<1<week 47, 2004,;P89LPC931FDH<SOT361-1 (TSSOP28)|<<http://www.nxp.com/packages/SOT361-1.html&l |
| 文件頁數(shù)： | 18/55頁 |
| 文件大?。?/td> | 267K |
| 代理商： | P89LPC931FDH |
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Philips Semiconductors
P89LPC930/931
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 05 — 15 December 2004
25 of 55
9397 750 14472
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
8.13.1
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.
8.13.2
Power-down mode
The Power-down mode stops the oscillator in order to minimize power consumption.
The P89LPC930/931 exits Power-down mode via any reset, or certain interrupts. In
Power-down mode, the power supply voltage may be reduced to the RAM keep-alive
voltage VRAM. 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 VRAM,
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.
Some chip functions continue to operate and draw power during Power-down mode,
increasing the total power used during Power-down. These include: Brownout detect,
Watchdog Timer, Comparators (note that Comparators can be powered-down
separately), and Real-Time Clock (RTC)/System Timer. The internal RC oscillator is
disabled unless both the RC oscillator has been selected as the system clock and the
RTC is enabled.
8.13.3
Total Power-down mode
This is the same as Power-down mode except that the brownout detection circuitry
and the voltage comparators are also disabled to conserve additional power. The
internal RC oscillator is disabled unless both the RC oscillator has been selected as
the system clock and the RTC is enabled. If the internal RC oscillator is used to clock
the RTC during Power-down, there will be high power consumption. Please use an
external low frequency clock to achieve low power with the Real-Time Clock running
during Power-down.
8.14 Reset
The P1.5/RST pin can function as either an active-LOW reset input or as a digital
input, P1.5. The RPE (Reset Pin Enable) bit in UCFG1, when set to ‘1’, enables the
external reset input function on P1.5. When cleared, P1.5 may be used as an input
pin.
Remark: During a power-up sequence, the RPE selection is overridden and this pin
will always function as a reset input. An external circuit connected to this pin
should not hold this pin LOW during a power-on sequence as this will keep the
device in reset. After power-up this input will function either as an external reset
input or as a digital input as dened by the RPE bit. Only a power-up reset will
temporarily override the selection dened by RPE bit. Other sources of reset will not
override the RPE bit.
characteristics” on page 42) before power is reapplied, in order to ensure a power-on
reset.
Reset can be triggered from the following sources:
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| P89LPC931FDH,112 | 功能描述:8位微控制器 -MCU 80C51 8K FL 256B 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| P89LPC931FDH,129 | 功能描述:8位微控制器 -MCU 8K FL/256B RAM/I2C/SPI/TSSOP28 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| P89LPC931FDH.129 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 8K FLASH SMD 89LC931 |
| P89LPC931FDH.129 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 8K FLASH SMD 89LC931 |
| P89LPC932 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:80C51 8-bit microcontroller with two-clock core 8 KB 3 V low-power Flash with 512-byte data EEPROM |
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