LPC1102

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© NXP B.V. 2011. All rights reserved.

Product data sheet

Rev. 4 — 24 June 2011

5 of 39

NXP Semiconductors

LPC1102

32-bit ARM Cortex-M0 microcontroller

[1]

[2]

5 V tolerant pad. See Figure 21 for the reset pad configuration.

[3]

5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis (see Figure 20).

[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 20).

[5]

When the external clock is not used, connect XTALIN as follows: XTALIN can be left floating or can be grounded (grounding is preferred

to reduce susceptibility to noise).

R/PIO1_0/

AD1/CT32B1_CAP0

B3[4]

yes

-

I; PU

R — Reserved.

I/O

-

PIO1_0 — General purpose digital input/output pin.

I-

AD1 — A/D converter, input 1.

I-

CT32B1_CAP0 — Capture input 0 for 32-bit timer 1.

R/PIO1_1/

AD2/CT32B1_MAT0

C4[4]

no

-

I; PU

R — Reserved.

I/O

-

PIO1_1 — General purpose digital input/output pin.

I-

AD2 — A/D converter, input 2.

O-

CT32B1_MAT0 — Match output 0 for 32-bit timer 1.

R/PIO1_2/

AD3/CT32B1_MAT1

C3[4]

no

-

I; PU

R — Reserved.

I/O

-

PIO1_2 — General purpose digital input/output pin.

I-

AD3 — A/D converter, input 3.

O-

CT32B1_MAT1 — Match output 1 for 32-bit timer 1.

SWDIO/PIO1_3/AD4/

CT32B1_MAT2

D4[4]

no

I/O

I; PU

SWDIO — Serial wire debug input/output.

I/O

-

PIO1_3 — General purpose digital input/output pin.

I-

AD4 — A/D converter, input 4.

O-

CT32B1_MAT2 — Match output 2 for 32-bit timer 1.

PIO1_6/RXD/

CT32B0_MAT0

C2[3]

no

I/O

I; PU

PIO1_6 — General purpose digital input/output pin.

I-

RXD — Receiver input for UART.

O-

CT32B0_MAT0 — Match output 0 for 32-bit timer 0.

PIO1_7/TXD/

CT32B0_MAT1

D1[3]

no

I/O

I; PU

PIO1_7 — General purpose digital input/output pin.

O-

TXD — Transmitter output for UART.

O-

CT32B0_MAT1 — Match output 1 for 32-bit timer 0.

D2; A1 -

I

-

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

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

XTALIN

B2[5]

-

I

-

External clock input and input to internal clock generator circuits.

Input voltage must not exceed 1.8 V.

D3; B1 -

I

-

Ground.

Table 3.

Symbol

Pin

Start

logic

input

Type

Reset

Description