MCP3204/3208

DS21298E-page 20

© 2008 Microchip Technology Inc.

FIGURE 5-1:

Communication with the MCP3204 or MCP3208.

FIGURE 5-2:

Communication with MCP3204 or MCP3208 in LSB First Format.

CS

CLK

D1

D2

D0

HI-Z

Don’t Care

Null

Bit B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0*

HI-Z

SGL/

DIFF

Start

D2

SGL/

DIFF

Start

*

After completing the data transfer, if further clocks are applied with CS low, the A/D converter will output LSB

first data, followed by zeros indefinitely (see Figure 5-2 below).

**

t

a high impedance node, leaving the CLK running to clock out the LSB-first data or zeros.

Null

CS

CLK

HI-Z

HI-Z

(MSB)

Power Down

Start

SGL/

DIFF

D0

D1

D2

*

After completing the data transfer, if further clocks are applied with CS low, the A/D converter will output zeros

indefinitely.

**

t

high impedance node, leaving the CLK running to clock out LSB first data or zeroes.

Don’t Care

*