Datasheet

User Manual Rev. 1.01 — 6 December 2017 8 of 13

NXP Semiconductors

LPCXpresso802

User Manual

The CMSIS, DISK and COMM LEDs are connected to the LPC11U35 device. The

behavior of the LEDs will vary depending on firmware used, typically the CMSIS LED will

blink when debug communication is occurring, and the COMM LED will blink when data is

being transferred over the VCOMM port.

4.1 Using an external debug probe

An external debug probe that supports ARM’s SWD interface, such as a SEGGER J-Link

or PE Micro probe, can be used with the LPCXpresso802 board. The external probe must

be connected CN2. When an external debug probe is used, the on-board probe must be

held in reset by placing a jumper on JP4. It is recommended that JP4 is fitted before

powering the board.

5. Expansion connectors/headers

The LPCXpresso802 board provides an Arduino UNO R3 shield site and a Grove I2C

connector to add additional peripherals, sensors or other circuitry, including off-the-shelf

expansion boards; this section describes these options. All LPC802 signals are also

available on breakout headers CN4 and

. For further details please refer to the board schematics.

5.1 Arduino UNO Rev 3 expansion connectors

The Arduino UNO Rev 3 compatible connectors provided on the LPCXpresso802 board

provide I2C, SPI, UART, PWM and analog function connections to shield boards that are

available from various 3rd part suppliers, or for customer use. The pin mappings are

shown in the tables below. Some connections are shared with other board features, as

shown (in addition to being available on breakout headers CN4 and CN5.)

Table 2. Arduino expansion connector pin mappings (CN3)

CN3 pin Arduino signal LPC802 pin Shared with

9 A0 PIO0_15 Potentiometer

15 I2C SCL PIO0_16 Temperature sensor

Grove connector (CN7)

16 I2C SDA PIO0_10 Temperature sensor

Grove connector (CN7)

17 AREF n/a (3.3V)

18 GND n/a (GND)

19 SPI SCK PIO0_14 SPI flash

20 SPI MISO PIO0_1 SPI flash

21 SPI MOSI PIO1_13 SPI flash

22 SPI SSEL PIO1_11 SPI flash

23 PWM PIO1_17

24 GPIO PIO0_12 User LED3

25 PIO0_8 User LED1

26 PWM PIO0_12 User LED3

27 PWM PIO0_7