LPC2470 NXP Semiconductors, LPC2470 Datasheet - Page 25

• Manufacturer Part Number: LPC2470
• Description: NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 4.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10] Either one of the external interrupts EINT1 to EINT3 or the LCD function is selectable, see
[11] Either one of the timer outputs MAT2[1] and MAT2[0] or the LCD function is selectable, see
[12] 5 V tolerant pad with 20 ns glitch filter providing digital I/O function with TTL levels and hysteresis.
[13] Pad provides special analog functionality.
[14] When the main oscillator is not used, connect XTAL1 and XTAL2 as follows: XTAL1 can be left floating or can be grounded (grounding
[15] If the RTC is not used, these pins can be left floating.
[16] This pin has a built-in pull-up resistor.
[17] This pin has no built-in pull-up and no built-in pull-down resistor.
LPC2470
Product data sheet
Symbol
VREF
VBAT
5 V tolerant pad providing digital I/O functions with TTL levels and hysteresis.
Either the I
5 V tolerant pad providing digital I/O functions (with TTL levels and hysteresis) and analog input. When configured as a ADC input,
digital section of the pad is disabled.
5 V tolerant pad providing digital I/O with TTL levels and hysteresis and analog output function. When configured as the DAC output,
digital section of the pad is disabled.
Open-drain 5 V tolerant digital I/O pad, compatible with I
functionality. When power is switched off, this pin connected to the I
configuration applies to all functions on this pin.
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).
Either the USB OTG function or the LCD function is selectable, see
Either the trace function or the LCD function is selectable, see
5 V tolerant pad with 5 ns glitch filter providing digital I/O functions with TTL levels and hysteresis.
is preferred to reduce susceptibility to noise). XTAL2 should be left floating.
Pin description
2
S function or the LCD function is selectable, see
Pin
24
38
[13]
[13]
…continued
Ball
K1
M3
[13]
[13]
All information provided in this document is subject to legal disclaimers.
Type
I
I
Rev. 4 — 8 September 2011
Description
ADC reference: This should be nominally the same voltage as V
but should be isolated to minimize noise and error. The level on this pin is
used as a reference for ADC and DAC.
RTC power supply: 3.3 V on this pin supplies the power to the RTC
peripheral.
2
C-bus 400 kHz specification. It requires an external pull-up to provide output
Table
Table
19,
2
Table
C-bus is floating and does not disturb the I
19,
Table
Table
19,
20, and
Table
20, and
20, and
Flashless 16-bit/32-bit microcontroller
Table
Table
Table
21.
Table
Table
21.
19,
19,
21.
Table
Table
20, and
20, and
2
LPC2470
C lines. Open-drain
© NXP B.V. 2011. All rights reserved.
Table
Table
21.
21.
DD(3V3)
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