參數(shù)資料
型號(hào)： P89LPC933HDH
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 4 kB-8 kB-16 kB 3 V byte-erasable flash with 8-bit ADCs
中文描述： 8-BIT, FLASH, 18 MHz, MICROCONTROLLER, PDSO28
封裝： 4.40 MM, PLASTIC, MO-153, SOT-361-1, TSSOP-28
文件頁數(shù)： 21/77頁
文件大小： 537K
代理商： P89LPC933HDH
P89LPC933_934_935_936
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 8 — 12 January 2011
28 of 77
NXP Semiconductors
P89LPC933/934/935/936
8-bit microcontroller with accelerated two-clock 80C51 core
CODE
64 kB of code memory space, accessed as part of program execution and via the
MOVC instruction. The P89LPC933/934/935/936 have 4 KB/8 kB/16 kB of on-chip
Code memory.
The P89LPC935/936 also has 512 bytes of on-chip data EEPROM that is accessed via
8.11 Data RAM arrangement
The 768 bytes of on-chip RAM are organized as shown in Table 7.
8.12 Interrupts
The P89LPC933/934/935/936 uses a four priority level interrupt structure. This allows
great flexibility in controlling the handling of the many interrupt sources. The
P89LPC933/934/935/936 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/Real-Time clock, I2C-bus, keyboard, comparators 1 and 2, SPI, CCU, data
EEPROM 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.
Remark: The arbitration ranking is only used to resolve pending requests of the same
priority level.
8.12.1 External interrupt inputs
The P89LPC933/934/935/936 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.
Table 7.
On-chip data memory usages
Type
Data RAM
Size (bytes)
DATA
Memory that can be addressed directly and indirectly
128
IDATA
Memory that can be addressed indirectly
256
XDATA
Auxiliary (‘External Data’) on-chip memory that is accessed
using the MOVX instructions (P89LPC935/936)
512
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P89LPC934 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core 4 kB/8 kB/16 kB 3 V byte-erasable Flash with 8-bit ADCs
P89LPC9341FDH 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-bit microcontroller with accelerated two-clock 80C51 core, 4 kB/8 kB/16 kB 3 V byte-erasable flash with 8-bit ADCs
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