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LPC2921 mcu inroduction
LPC2921 combines an ARM968E-S CPU core with two integrated TCM blocks operating at
frequencies of up to 125 MHz, two 10-bit ADCs,CAN and LIN, up to 40 kB SRAM,
Full-speed USB 2.0 device controller,up to 512 kB flash memory, and multiple
serial and parallel interfaces in a single chip targeted at consumer, industrial,
and communication markets.
ARM968E-S processor running at frequencies of up to 125 MHz maximum.
Multilayer AHB system bus at 125 MHz with four separate layers.
8 kB ETB SRAM, also usable for code execution and data.
Up to 512 kB high-speed flash-program memory.
16 kB true EEPROM, byte-erasable/programmable.
Two 550 UARTs with 16-byte Tx and Rx FIFO depths, DMA support, and RS-485/EIA-485 (9-bit)
Up to 60 general-purpose I/O pins with programmable pull-up, pull-down, or bus keeper.
Up to 16 level-sensitive external interrupt pins, including USB, CAN and LIN wake-up
Second, dedICated CGU with its own PLL generates the USB clock and a configurable clock
Dual power supply:
CPU operating voltage: 1.8 V ± 5 %.
I/O operating voltage: 2.7 V to 3.6 V; inputs tolerant up to 5.5 V.
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