LPC1313 datasheet(15/62 Pages) NXP

15 / 62 page

LPC1311_13_42_43

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Product data sheet

Rev. 3 — 10 August 2010

15 of 62

NXP Semiconductors

LPC1311/13/42/43

32-bit ARM Cortex-M3 microcontroller

[1]

Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled; IA = inactive, no pull-up/down enabled.

F = floating; floating pins, if not used, should be tied to ground or power to minimize power consumption.

[2]

See Figure 31 for pad characteristics. RESET functionality is not available in Deep power-down mode. Use the WAKEUP pin to reset

the chip and wake up from Deep power-down mode.

[3]

5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 30).

[4]

I2C-bus pads compliant with the I2C-bus specification for I2C standard mode and I2C Fast-mode Plus.

[5]

5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors, configurable hysteresis, and analog input.

When configured as a ADC input, digital section of the pad is disabled, and the pin is not 5 V tolerant (see Figure 30).

[6]

Pad provides USB functions. It is designed in accordance with the USB specification, revision 2.0 (Full-speed and Low-speed mode

only).

[7]

When the system oscillator is not used, connect XTALIN and XTALOUT as follows: XTALIN can be left floating or can be grounded

(grounding is preferred to reduce susceptibility to noise). XTALOUT should be left floating.

VDD

3.3 V supply voltage to the internal regulator, the external rail, and the

ADC. Also used as the ADC reference voltage.

XTALIN

4[7]

Input to the oscillator circuit and internal clock generator circuits. Input

voltage must not exceed 1.8 V.

XTALOUT

5[7]

Output from the oscillator amplifier.

VSS

Thermal pad. Connect to ground.

Table 4.

LPC1311/13/42/43 HVQFN33 pin description table …continued

Symbol

Start

logic

input

Type Reset

state

[1]

Description

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