LPC1766 datasheet(56/70 Pages) ETC2

56 / 70 page

LPC1766_0.02

Objective data sheet

Rev. 00.02 — 12 August 2008

56 of 70

NXP Semiconductors

LPC1766

Fast communication chip

11.10 UART

Fig 25.

Ethernet RMII timing

002aad991

ENET_REF_CLK

ENET_TX_EN

td(x)

toh(x)

tih(x)

tsu(x)

ENET_TXD[1:0]

ENET_RXD[1:0]

ENET_RX_ER

ENET_CRS

Table 18.

Dynamic characteristics: UART pins

Tamb = −40 °C to +85 °C for industrial applications

Symbol

Parameter

Min

Typ

Max

Unit

tUART

serial port clock cycle time

<tbd>

td(UART)

output data setup to clock rising edge time

<tbd>

th(UART)

output data hold after clock rising edge time

<tbd>

tsu(D)

data input set-up time

<tbd>

th(D)

data input hold time

<tbd>

Fig 26. UART timing

002aad636

reference

clock

output signal (O)

input signal (I)

td(XXX)

th(XXX)

th(D)

tsu(D)

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