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LPC804 датащи(PDF) 28 Page - NXP Semiconductors

номер детали LPC804
подробное описание детали  32-bit Arm® Cortex®-M0 microcontroller; up to 32 KB flash and 4 KB SRAM; 12-bit ADC; Comparator; 10-bit DAC; Capacitive Touch Interface; Programmable Logic Unit
PDF  89 Pages
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производитель  NXP [NXP Semiconductors]
домашняя страница  http://www.nxp.com
Logo NXP - NXP Semiconductors

LPC804 датащи(HTML) 28 Page - NXP Semiconductors

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LPC804
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2023. All rights reserved.
Product data sheet
Rev. 2.1 — 25 July 2023
28 of 87
NXP Semiconductors
LPC804
32-bit Arm Cortex-M0+ microcontroller
9.24 CRC engine
The Cyclic Redundancy Check (CRC) generator with programmable polynomial settings
supports several CRC standards commonly used. To save system power and bus
bandwidth, the CRC engine supports DMA transfers.
9.24.1 Features
• Supports three common polynomials CRC-CCITT, CRC-16, and CRC-32.
– CRC-CCITT: x16 + x12 + x5 + 1
– CRC-16: x16 + x15 + x2 + 1
– CRC-32: x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1
• Bit order reverse and 1’s complement programmable setting for input data and CRC
sum.
• Programmable seed number setting.
• Supports CPU PIO or DMA back-to-back transfer.
• Accept any size of data width per write: 8, 16 or 32-bit.
– 8-bit write: 1-cycle operation.
– 16-bit write: 2-cycle operation (8-bit x 2-cycle).
– 32-bit write: 4-cycle operation (8-bit x 4-cycle).



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