LPC1111 datasheet(17/59 Pages) NXP

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LPC1111_12_13_14_1

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Product data sheet

Rev. 01 — 16 April 2010

17 of 59

NXP Semiconductors

LPC1111/12/13/14

32-bit ARM Cortex-M0 microcontroller

[1]

See Figure 27 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.

[2]

5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 26).

[3]

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

[4]

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 26).

[5]

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_0

I/O

Port 2 — Port 2 is a 12-bit I/O port with individual direction and function

controls for each bit. The operation of port 2 pins depends on the function

selected through the IOCONFIG register block. Pins PIO2_1 to PIO2_11

are not available.

PIO2_0/DTR

1[2]

I/O

PIO2_0 — General purpose digital input/output pin.

DTR — Data Terminal Ready output for UART.

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 register block. Pins PIO3_0, PIO3_1,

PIO3_3 and PIO3_6 to PIO3_11 are not available.

PIO3_2

28[2]

I/O

PIO3_2 — General purpose digital input/output pin.

PIO3_4

13[2]

I/O

PIO3_4 — General purpose digital input/output pin.

PIO3_5

14[2]

I/O

PIO3_5 — General purpose digital input/output pin.

VDD

6; 29

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

Also used as the ADC reference voltage.

XTALIN

4[5]

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

voltage must not exceed 1.8 V.

XTALOUT

5[5]

Output from the oscillator amplifier.

VSS

Thermal pad. Connect to ground.

Table 5.

LPC1111/12/13/14 pin description table (HVQFN33 package) …continued

Symbol

Type

Description

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