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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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P89LPC933FDH датащи(PDF) 38 Page - NXP Semiconductors |
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P89LPC933FDH датащи(HTML) 38 Page - NXP Semiconductors |
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38 / 75 page  9397 750 15113 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 06 — 20 June 2005 38 of 75 Philips Semiconductors P89LPC933/934/935/936 8-bit microcontroller with accelerated two-clock 80C51 core 8.19.9 CCU interrupts There are seven interrupt sources on the CCU which share a common interrupt vector. 8.20 UART The P89LPC933/934/935/936 has an enhanced UART that is compatible with the conventional 80C51 UART except that Timer 2 overflow cannot be used as a baud rate source. The P89LPC933/934/935/936 does include an independent baud rate generator. The baud rate can be selected from the oscillator (divided by a constant), Timer 1 overflow, or the independent baud rate generator. In addition to the baud rate generation, enhancements over the standard 80C51 UART include Framing Error detection, automatic address recognition, selectable double buffering and several interrupt options. The UART can be operated in four modes: shift register, 8-bit UART, 9-bit UART, and CPU clock ⁄ 32 or CPU clock ⁄ 16. 8.20.1 Mode 0 Serial data enters and exits through RXD. TXD outputs the shift clock. 8 bits are transmitted or received, LSB first. The baud rate is fixed at 1 ⁄ 16 of the CPU clock frequency. Fig 13. Capture/compare unit interrupts 002aaa896 interrupt to CPU TOIE2 (TICR2.7) TOIF2 (TIFR2.7) TICIE2A (TICR2.0) TICF2A (TIFR2.0) TICIE2B (TICR2.1) TICF2B (TIFR2.1) TOCIE2A (TICR2.3) TOCF2A (TIFR2.3) TOCIE2B (TICR2.4) TOCF2B (TIFR2.4) TOCIE2C (TICR2.5) TOCF2C (TIFR2.5) TOCIE2D (TICR2.6) TOCF2D (TIFR2.6) EA (IEN0.7) ECCU (IEN1.4) PRIORITY ENCODER other interrupt sources ENCINT.0 ENCINT.1 ENCINT.2 |
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