ad7477srt-r2 Analog Devices, Inc., ad7477srt-r2 Datasheet - Page 20

• Manufacturer Part Number: ad7477srt-r2
• Description: 1 Msps, 12-/10-/8-bit Adcs In 6-lead Sot-23
• Manufacturer: Analog Devices, Inc.

AD7476/AD7477/AD7478
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.
AD7478
AD7476/
AD7477/
1
ADDITIONAL PINS OMITTED FOR CLARITY
Figure 28. Interfacing to the DSP56xxx
SDATA
SCLK
CS
1
SCK
SRD
SC2
DSP56xxx
1
Rev. E | Page 20 of 24
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 21.
AD7478
AD7476/
AD7477/
1
ADDITIONAL PINS OMITTED FOR CLARITY
Figure 29. Interfacing to the MC68HC16
SDATA
SCLK
CS
1
SCLK/PMC2
MISO/PMC0
SS/PMC9
MC68HC16
1