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參數(shù)資料
| 型號： | P89LPC913 |
| 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位微控制器兩個小時80C51的核心具有1KB 3伏閃光的128字節(jié)RAM |
| 文件頁數(shù)： | 44/63頁 |
| 文件大?。?/td> | 314K |
| 代理商： | P89LPC913 |
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Philips Semiconductors
P89LPC912/913/914
8-bit microcontrollers with two-clock 80C51 core
Product data
Rev. 03 — 17 December 2004
44 of 63
9397 750 14468
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
9.22 Comparator and power reduction modes
Either or both comparators may remain enabled when Power-down or Idle mode is
activated, but both comparators are disabled automatically in Total Power-down
mode.
If a comparator interrupt is enabled (except in Total Power-down mode), a change of
the comparator output state will generate an interrupt and wake up the processor. If
the comparator output to a pin is enabled, the pin should be configured in the
push-pull mode in order to obtain fast switching times while in Power-down mode.
The reason is that with the
oscillator
stopped, the temporary strong pull-up that
normally occurs during switching on a quasi-bidirectional port pin does not take
place.
Comparators consume power in Power-down and Idle modes, as well as in the
normal operating mode. This fact should be taken into account when system power
consumption is an issue. To minimize power consumption, the user can disable the
comparators via PCONA.5, or put the device in Total Power-down mode.
9.23 Keypad interrupt (KBI)
The Keypad Interrupt function is intended primarily to allow a single interrupt to be
generated when Port 0 is equal to or not equal to a certain pattern. This function can
be used for bus address recognition or keypad recognition. The user can configure
the port via SFRs for different tasks.
The Keypad Interrupt Mask Register (KBMASK) is used to define which input pins
connected to Port 0 can trigger the interrupt. The Keypad Pattern Register (KBPATN)
is used to define a pattern that is compared to the value of Port 0. The Keypad
Interrupt Flag (KBIF) in the Keypad Interrupt Control Register (KBCON) is set when
the condition is matched while the Keypad Interrupt function is active. An interrupt will
be generated if enabled. The PATN_SEL bit in the Keypad Interrupt Control Register
(KBCON) is used to define equal or not-equal for the comparison.
a.
CN1, OE1 = 0 0
b.
CN1, OE1 = 0 1
c.
CN1, OE1 = 1 0
d.
CN1, OE1 = 1 1
e.
CN2 = 0
f.
CN2 = 1
Fig 22. Comparator configurations.
CIN1A
CMPREF
002aaa490
CO1
CIN1A
CMPREF
002aaa491
CO1
CMP1
CIN1A
VREF (1.23 V)
002aaa492
CO1
CIN1A
VREF (1.23 V)
002aaa493
CO1
CMP1
CIN2A
CMPREF
002aaa494
CO2
CIN2A
VREF (1.23 V)
002aaa495
CO2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P89LPC913FDH | 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 1K FLASH TSSOP14 |
| P89LPC913FDH,129 | 功能描述:8位微控制器 -MCU 1K FL/128B RAM/SPI 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(fēng)格:SMD/SMT |
| P89LPC913FDH129 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| P89LPC913FDH-S | 功能描述:8位微控制器 -MCU 1K FL/128B RAM/SPI 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(fēng)格:SMD/SMT |
| P89LPC914 | 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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