LPC18S50 datasheet(55/151 Pages) NXP

55 / 151 page

LPC18S50_S30_S10

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Product data sheet

Rev. 1 — 23 February 2015

55 of 151

NXP Semiconductors

LPC18S50/S30/S10

32-bit ARM Cortex-M3 microcontroller

Clock pins

CLK0

[4]

O; PU O

EMC_CLK0 — SDRAM clock 0.

CLKOUT — Clock output pin.

R — Function reserved.

I/O

SD_CLK — SD/MMC card clock.

EMC_CLK01 — SDRAM clock 0 and clock 1 combined.

I/O

SSP1_SCK — Serial clock for SSP1.

ENET_TX_CLK (ENET_REF_CLK) — Ethernet Transmit

Clock (MII interface) or Ethernet Reference Clock (RMII

interface).

CLK1

T10

[4]

O; PU O

EMC_CLK1 — SDRAM clock 1.

CLKOUT — Clock output pin.

R — Function reserved.

CGU_OUT0 — CGU spare clock output 0.

R — Function reserved.

I2S1_TX_MCLK — I2S1 transmit master clock.

CLK2

D14

P10

[4]

O; PU O

EMC_CLK3 — SDRAM clock 3.

CLKOUT — Clock output pin.

R — Function reserved.

I/O

SD_CLK — SD/MMC card clock.

EMC_CLK23 — SDRAM clock 2 and clock 3 combined.

I2S0_TX_MCLK — I2S transmit master clock.

I/O

I2S1_RX_SCK — Receive Clock. It is driven by the master

and received by the slave. Corresponds to the signal SCK in

the I2S-bus specification.

CLK3

P12

[4]

O; PU O

EMC_CLK2 — SDRAM clock 2.

CLKOUT — Clock output pin.

R — Function reserved.

CGU_OUT1 — CGU spare clock output 1.

R — Function reserved.

I/O

I2S1_RX_SCK — Receive Clock. It is driven by the master

and received by the slave. Corresponds to the signal SCK in

the I2S-bus specification.

Table 3.

Pin description …continued

LCD, Ethernet, USB0, and USB1 functions are not available on all parts. See Table 2.

Symbol

Description

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