EVAL-AD7476CBZ Ver la hoja de datos (PDF) - Analog Devices

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EVAL-AD7476CBZ

1 MSPS, 12-/10-/8-Bit ADCs in 6-Lead SOT-23

Analog Devices 

AD7476/AD7477/AD7478

AD7476/

AD7477/

AD74781

SCLK

SDATA

CS

DSP56xxx1

SCK

SRD

SC2

1ADDITIONAL PINS OMITTED FOR CLARITY

Figure 28. Interfacing to the DSP56xxx

AD7476/AD7477/AD7478 to MC68HC16 Interface

The serial peripheral interface (SPI) on the MC68HC16 is

configured for master mode (MSTR = 1), the clock polarity bit

(CPOL) = 1, and the clock phase bit (CPHA) = 0. The SPI is

configured by writing to the SPI Control Register (SPCR). For

more information on the MC68HC16, check with Motorola for

the related documentation.

AD7476/

AD7477/

AD74781

SCLK

SDATA

CS

MC68HC161

SCLK/PMC2

MISO/PMC0

SS/PMC9

1ADDITIONAL PINS OMITTED FOR CLARITY

Figure 29. Interfacing to the MC68HC16

The serial transfer takes place as a 16-bit operation when the

SIZE bit in the SPCR register is set to SIZE = 1. To implement

the power-down mode with an 8-bit transfer, set SIZE = 0.

A connection diagram is shown in Figure 29.

Rev. F | Page 20 of 24

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