Datasheet

LPC2478 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3.1 — 16 October 2013 27 of 93
NXP Semiconductors
LPC2478
Single-chip 16-bit/32-bit microcontroller
[5] Pad provides digital I/O and USB functions. It is designed in accordance with the USB specification, revision 2.0 (Full-speed and
Low-speed mode only).
[6] 5 V tolerant pad with 10 ns glitch filter providing digital I/O functions with TTL levels and hysteresis.
[7] 5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.
[8] Pad provides special analog functionality.
[9] When the main oscillator is not used, connect XTAL1 and XTAL2 as follows: XTAL1 can be left floating or can be grounded (grounding
is preferred to reduce susceptibility to noise). XTAL2 should be left floating.
[10] If the RTC is not used, these pins can be left floating.
[11] Pad provides special analog functionality.
[12] Pad provides special analog functionality.
[13] Pad provides special analog functionality.
[14] Pad provides special analog functionality.
[15] Pad provides special analog functionality.
[16] Pad provides special analog functionality.
[17] Either the I
2
S function or the LCD function is selectable, see Table 20, Table 21, and Table 22.
[18] Either the USB OTG function or the LCD function is selectable, see Table 20
, Table 21, and Table 22.
[19] Either the trace function or the LCD function is selectable, see Table 20
, Table 21, and Table 22.
[20] Either one of the external interrupts EINT1
to EINT3 or the LCD function is selectable, see Table 20, Tab le 21, and Table 22.
[21] Either one of the timer outputs MAT2[1] and MAT2[0] or the LCD function is selectable, see Table 20
, Table 21 , and Table 22.
[22] This pin has a built-in pull-up resistor.
[23] This pin has no built-in pull-up and no built-in pull-down resistor.