Microchip Technology MCP3901EV-MCU16 Data Sheet

DS22192D-page 35

MCP3901

6.6

SPI MODE 0,0 – Clock Idle Low,
Read/Write Examples

In this SPI mode, the clock Idles low. For the MCP3901,
this means that there will be a rising edge before there
is a falling edge.

FIGURE 6-4:

Device Read (SPI Mode 0,0 – Clock Idles Low).

FIGURE 6-5:

Device Write (SPI Mode 0,0 – Clock Idles Low).

SCK

SDI

SDO

R/W

A4 A3 A2 A1

D6 D5

D4 D3 D2 D1

(ADDRESS) DATA

(ADDRESS + 1) DATA

D4 D3 D2

Data Transitions on

the Falling Edge

MCU and MCP3901 Latch

Bits on the Rising Edge

D7 OF (ADDRESS + 2) DATA

HI-Z

SCK

SDI

SDO

R/W

A5 A4

A3 A2 A1