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LPC29xx Microcontrollers Slide 53
This training module will now review the peripheral subsystem and cover IO ports, SPIs, timers, and UARTs. The microcontrollers are equipped with up to 108 IO pins with programmable pull up, pull down, and bus keeper configurations. As shown here, there could be around 6 GPIO ports, each capable of accessing up to 32 pins. The pins must be routed in the SCU to be used as GPIO. A special note for LPC2930, the External Memory Interface (EMI) pins are shared with GPIO pins, which limits the number of GPIO pins available.
PTM Published on: 2011-11-02