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| 型号： | P89LPC9107FDH,129 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 33/39页 |
| 文件大小： | 0K |
| 描述： | IC 80C51 MCU FLASH 1K 14-TSSOP |
| 产品培训模块： | Migrating from 8/16-Bit MCUs to 32-Bit ARMs |
| 标准包装： | 960 |
| 系列： | LPC900 |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 18MHz |
| 连通性： | UART/USART |
| 外围设备： | 欠压检测/复位，LED，POR，PWM，WDT |
| 输入/输出数： | 12 |
| 程序存储器容量： | 1KB（1K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 2.4 V ~ 3.6 V |
| 数据转换器： | A/D 4x10b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 14-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 管件 |
| 产品目录页面： | 706 (CN2011-ZH PDF) |
| 配用： | DB-TSSOP-LPC9107-ND - BOARD FOR LPC9107 TSSOP 622-1006-ND - SOCKET ADAPTER BOARD 568-4000-ND - DEMO BOARD SPI/I2C TO DUAL UART 568-3510-ND - DEMO BOARD SPI/I2C TO UART 622-1003-ND - KIT FOR LCD DEMO 622-1002-ND - USB IN-CIRCUIT PROG LPC9XX 568-1759-ND - EMULATOR DEBUGGER/PROGRMMR LPC9X |
| 其它名称： | 568-2002-5 935278497129 P89LPC9107FDH-S |
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P89LPC9102_9103_9107_3
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 03 — 10 July 2007
39 of 61
NXP Semiconductors
P89LPC9102/9103/9107
8-bit microcontrollers with two-clock accelerated 80C51 core
8.21 Comparator interrupt
The comparator has an interrupt ag contained in its conguration register. This ag is set
whenever the comparator output changes state. The ag may be polled by software or
may be used to generate an interrupt.
8.22 Comparator and power reduction modes
The comparator may remain enabled when Power-down mode or Idle mode is activated,
but the comparator is disabled automatically in Total Power-down mode.
If the 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 congured 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.
The comparator consumes power in Power-down mode and Idle mode, 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
comparator via PCONA.5 or put the device in Total Power-down mode.
8.23 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 congure the port
via SFRs for different tasks.
The Keypad Interrupt Mask Register (KBMASK) is used to dene which input pins
connected to Port 0 can trigger the interrupt. The Keypad Pattern Register (KBPATN) is
used to dene 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
dene equal or not-equal for the comparison.
In order to use the Keypad Interrupt as an original KBI function like in 87LPC76x series,
the user needs to set KBPATN = 0FFH and PATN_SEL = 1 (not equal), then any key
connected to Port 0 which is enabled by the KBMASK register will cause the hardware to
set KBIF and generate an interrupt if it has been enabled. The interrupt may be used to
wake-up the CPU from Idle mode or Power-down mode. This feature is particularly useful
in handheld, battery powered systems that need to carefully manage power consumption
yet also need to be convenient to use.
In order to set the ag and cause an interrupt, the pattern on Port 0 must be held longer
than six CCLKs.
8.24 Watchdog timer
The watchdog timer causes a system reset when it underows as a result of a failure to
feed the timer prior to the timer reaching its terminal count. It consists of a programmable
12-bit prescaler, and an 8-bit down counter. The down counter is decremented by a tap
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| P89LPC9107FN | 功能描述:8位微控制器 -MCU 1KFL/128B RAM/8B ADC/PWM/UART 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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| P89LPC912 | 制造商:PHILIPS 制造商全称: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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