Microchip Technology ARD00342 Data Sheet
MCP3901
DS22192D-page 34
© 2011 Microchip Technology Inc.
:
FIGURE 6-2:
Device Read (SPI Mode 1,1 – Clock Idles High).
FIGURE 6-3:
Device Write (SPI Mode 1,1 – Clock Idles High).
SCK
SDI
SDO
CS
A6
A5 A4 A3
A2
A1 A0
D6
D5 D4
D3 D2
D1
D0
(ADDRESS) DATA
(ADDRESS + 1) DATA
D6 D5 D4 D3
D2 D1
Data Transitions on
the Falling Edge
MCU and MCP3901 Latch
Bits on the Rising Edge
D0
HI-Z
HI-Z
D7
D7
R/W
HI-Z
SCK
SDI
SDO
CS
R/W
A6 A5
A4 A3 A2
A1
A0
D7
D6 D5
D4 D3
D2 D1
(ADDRESS) DATA
(ADDRESS + 1) DATA
D6 D5
D4 D3
D2
D1
D0
Data Transitions on
the Falling Edge
MCU and MCP3901 Latch
Bits on the Rising Edge
D0
HI-Z
HI-Z
D7
HI-Z