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| 型号： | P89LPC9381FDH |
| 厂商： | NXP Semiconductors N.V. |
| 元件分类： | 8位微控制器 |
| 英文描述： | 8-bit microcontroller with accelerated two-clock 80C51 core 4 kB 3 V byte-erasable flash with 10-bit ADC |
| 封装： | P89LPC9381FDH<SOT361-1 (TSSOP28)|<<http://www.nxp.com/packages/SOT361-1.html<1<Always Pb-free,; |
| 文件页数： | 13/59页 |
| 文件大小： | 286K |
| 代理商： | P89LPC9381FDH |
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P89LPC9381_1
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 8 September 2006
20 of 60
Philips Semiconductors
P89LPC9381
8-bit microcontroller with 10-bit ADC
CODE
64 kB of Code memory space, accessed as part of program execution and via the
MOVC instruction. The P89LPC9381 has 4 kB of on-chip Code memory.
7.11 Data RAM arrangement
The 256 B of on-chip RAM are organized as shown in Table 6.
7.12 Interrupts
The P89LPC9381 uses a four priority level interrupt structure. This allows great exibility
in controlling the handling of the many interrupt sources. The P89LPC9381 supports
15 interrupt sources: external interrupts 0 and 1, timers 0 and 1, serial port TX, serial port
RX, combined serial port RX/TX, brownout detect, watchdog/RTC, I2C, keyboard,
comparators 1 and 2, SPI, write/ADC completion.
Each interrupt source can be individually enabled or disabled by setting or clearing a bit in
the interrupt enable registers IEN0 or IEN1. The IEN0 register also contains a global
disable bit, EA, which disables all interrupts.
Each interrupt source can be individually programmed to one of four priority levels by
setting or clearing bits in the interrupt priority registers IP0, IP0H, IP1, and IP1H. An
interrupt service routine in progress can be interrupted by a higher priority interrupt, but
not by another interrupt of the same or lower priority. The highest priority interrupt service
cannot be interrupted by any other interrupt source. If two requests of different priority
levels are pending at the start of an instruction, the request of higher priority level is
serviced.
If requests of the same priority level are pending at the start of an instruction, an internal
polling sequence determines which request is serviced. This is called the arbitration
ranking. Note that the arbitration ranking is only used to resolve pending requests of the
same priority level.
7.12.1 External interrupt inputs
The P89LPC9381 has two external interrupt inputs as well as the Keypad Interrupt
function. The two interrupt inputs are identical to those present on the standard 80C51
microcontrollers.
These external interrupts can be programmed to be level-triggered or edge-triggered by
setting or clearing bit IT1 or IT0 in Register TCON.
In edge-triggered mode, if successive samples of the INTn pin show a HIGH in one cycle
and a LOW in the next cycle, the interrupt request ag IEn in TCON is set, causing an
interrupt request.
If an external interrupt is enabled when the P89LPC9381 is put into Power-down or Idle
mode, the interrupt will cause the processor to wake-up and resume operation. Refer to
Section 7.15 “Power reduction modes” for details.
Table 6.
On-chip data memory usages
Type
Data RAM
Size
DATA
Memory that can be addressed directly and indirectly
128 B
IDATA
Memory that can be addressed indirectly
256 B
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| P89LPC9381FDH,512 | 功能描述:8位微控制器 -MCU 4K FL/256B RAM/ 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 |
| P89LPC938FA | 制造商:NXP Semiconductors 功能描述:IC MCU 8BIT 80C51 8K FLASH PLCC28 |
| P89LPC938FA,129 | 功能描述:8位微控制器 -MCU 80C51 8K FL 768B RAM 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 |
| P89LPC938FA129 | 制造商:NXP Semiconductors 功能描述:P89LPC938FA/PLCC28/TUBESM// |
| P89LPC938FDH | 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 8K FLASH TSSOP28 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 8K FLASH, TSSOP28 制造商:NXP Semiconductors 功能描述:MCU 8BIT 80C51 8K FLASH, TSSOP28, Controller Family/Series:(8051) 8052, Core Siz |
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