LPC178X datasheet(94/120 Pages) NXP

94 / 120 page

LPC178X_7X

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Preliminary data sheet

Rev. 4 — 1 May 2012

94 of 120

NXP Semiconductors

LPC178x/7x

32-bit ARM Cortex-M3 microcontroller

12. ADC electrical characteristics

Fig 27. SD/MMC timing

002aag204

SD_CLK

SD_DATn (O)

SD_DATn (I)

td(QV)

th(D)

tsu(D)

Tcy(clk)

th(Q)

SD_CMD (O)

SD_CMD (I)

Table 29.

12-bit ADC characteristics

VDDA = 2.7 V to 3.6 V; Tamb = 40 C to +85 C unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIA

analog input voltage

VDDA

12-bit resolution; 400 kSamples/sec

differential linearity

error

[1][2][3] --

1LSB

EL(adj)

integral non-linearity

[1][4] --

6LSB

offset error

[1][5] --

5LSB

gain error

[1][6] --

5LSB

absolute error

[1][7] --<tbd>

LSB

fclk(ADC)

ADC clock frequency

12.4

MHz

fc(ADC)

ADC conversion

frequency

--400

kHz

Cia

analog input

capacitance

--5

Rvsi

voltage source

interface resistance

[8] --1



8-bit resolution[9]; 1.16 MSamples/sec

differential linearity

error

[1][2][3] -

1-

LSB

EL(adj)

integral non-linearity

[1][4] -

1-

LSB

offset error

[1][5] -

1-

LSB

gain error

[1][6] -

1-

LSB

absolute error

[1][7] --<tbd>

LSB

fclk(ADC)

ADC clock frequency

MHz

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