LPC1850 datasheet(9/84 Pages) NXP

9 / 84 page

LPC1850_30_20_10

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Objective data sheet

Rev. 1 — 3 January 2011

9 of 84

NXP Semiconductors

LPC1850/30/20/10

32-bit ARM Cortex-M3 microcontroller

P1_18[2]

N12

I; PU

I/O

GPIO0[13] — General purpose digital input/output pin.

I/O

U2_DIR — RS-485/EIA-485 output enable/direction control for UART2.

-n.c.

ENET_TXD0 — Ethernet transmit data 0 (RMII/MII interface).

P1_19[2]

M11

<tbd>

ENET_TX_CLK (ENET_REF_CLK) — Ethernet Transmit Clock (MII

interface) or Ethernet Reference Clock (RMII interface).

I/O

SSP1_SCK — Serial clock for SSP1.

-n.c.

P1_20[2]

M10

I; PU

I/O

GPIO0[15] — General purpose digital input/output pin.

I/O

SSP1_SSEL — Slave Select for SSP1.

-n.c.

ENET_TXD1 — Ethernet transmit data 1 (RMII/MII interface).

P2_0[2]

T16

<tbd>

n.c.

U0_TXD — Transmitter output for USART0.

I/O

EXTBUS_A13 — External memory address line 13.

USB0_PWR_EN — VBUS drive signal (towards external charge pump or

power management unit); indicates that Vbus must be driven (active high).

P2_1[2]

N15

<tbd>

n.c.

U0_RXD — Receiver input for USART0.

I/O

EXTBUS_A12 — External memory address line 12.

USB0_PWR_FAULT — Port power fault signal indicating overcurrent

condition; this signal monitors over-current on the USB bus (external circuitry

required to detect over-current condition).

P2_2[2]

M15

<tbd>

n.c.

I/O

U0_UCLK — Serial clock input/output for USART0 in synchronous mode.

I/O

EXTBUS_A11 — External memory address line 11.

USB0_IND1 — USB0 port indicator LED control output 1.

P2_3[2]

J12

<tbd>

n.c.

I/O

I2C1_SDA — I2C1 data input/output (this pin does not use a specialized I2C

pad).

U3_TXD — Transmitter output for USART3.

CTIN_1 — SCT input 1. Capture input 1 of timer 0. Capture input 1 of timer 2.

P2_4[2]

K11

<tbd>

n.c.

I/O

I2C1_SCL — I2C1 clock input/output (this pin does not use a specialized I2C

pad).

U3_RXD — Receiver input for USART3.

CTIN_0 — SCT input 0. Capture input 0 of timer 0, 1, 2, 3.

Table 3.

Pin description …continued

Symbol

Reset

state

[1]

Type Description

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