LPC1111 datasheet(11/64 Pages) NXP

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LPC1111_12_13_14

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Product data sheet

Rev. 5 — 22 June 2011

11 of 64

NXP Semiconductors

LPC1111/12/13/14

32-bit ARM Cortex-M0 microcontroller

[1]

Pin state at reset for default function: I = Input; O = Output; PU = internal pull-up enabled (pins pulled up to 2.6 V for

LPC111x/101/201/301, pins pulled up to full VDD level on LPC111x/102/202/302 (VDD = 3.3 V)); IA = inactive, no pull-up/down enabled.

[2]

See Figure 32 for the reset pad configuration. 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. An external pull-up resistor is required on this pin for the 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 31).

[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 31).

[6]

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.

PIO2_10

25[3]

I/O

I; PU

PIO2_10 — General purpose digital input/output pin.

PIO2_11/SCK0

31[3]

I/O

I; PU

PIO2_11 — General purpose digital input/output pin.

I/O

SCK0 — Serial clock for SPI0.

PIO3_0 to PIO3_5

I/O

Port 3 — Port 3 is a 12-bit I/O port with individual direction and

function controls for each bit. The operation of port 3 pins

depends on the function selected through the IOCONFIG

PIO3_0/DTR

36[3]

I/O

I; PU

PIO3_0 — General purpose digital input/output pin.

O-

DTR — Data Terminal Ready output for UART.

PIO3_1/DSR

37[3]

I/O

I; PU

PIO3_1 — General purpose digital input/output pin.

I-

DSR — Data Set Ready input for UART.

PIO3_2/DCD

43[3]

I/O

I; PU

PIO3_2 — General purpose digital input/output pin.

I-

DCD — Data Carrier Detect input for UART.

PIO3_3/RI

48[3]

I/O

I; PU

PIO3_3 — General purpose digital input/output pin.

I-

RI — Ring Indicator input for UART.

PIO3_4

18[3]

I/O

I; PU

PIO3_4 — General purpose digital input/output pin.

PIO3_5

21[3]

I/O

I; PU

PIO3_5 — General purpose digital input/output pin.

VDD

8; 44

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

and the ADC. Also used as the ADC reference voltage.

XTALIN

6[6]

Input to the oscillator circuit and internal clock generator circuits.

Input voltage must not exceed 1.8 V.

XTALOUT

7[6]

Output from the oscillator amplifier.

VSS

5; 41

Ground.

Table 3.

LPC1113/14 pin description table (LQFP48 package) …continued

Symbol

Start

logic

input

Type

Reset

state

[1]

Description

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