MCP3909RD-3PH3 Microchip Technology, MCP3909RD-3PH3 Datasheet - Page 30

• Manufacturer Part Number: MCP3909RD-3PH3
• Description: REF DESIGN FOR MCP3909 W/18F2520
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-3PH3

• Main Purpose: Power Management, Energy/Power Meter
• Utilized Ic / Part: MCP3909, PIC18F2520, PIC18F4550
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP3909
5.7
With microcontroller SPI ports, it is required to send
groups of eight bits. It is also required that the
microcontroller SPI port be configured to clock out data
on the falling edge of clock and latch data in on the
rising edge, or vice versa depending on the mode.
TABLE 5-4:
DS22025B-page 30
Standard SPI
Terminology
Mode
0,0
0,1
1,0
1,1
Using the MCP3909 with
Microcontroller (MCU) SPI Ports
SPI MODE COMPATIBILITY
PIC Control Bits
CKP
0
0
1
1
State
CKE
1
0
1
0
Compatibility
MCP3909
—
—
—
√
Idle state for clock is low level, transmit (from PIC)
occurs from active to idle clock state
Idle state for clock is low level, transmit (from PIC)
occurs from idle to active clock state
Idle state for clock is high level, transmit (from PIC)
occurs from active to idle clock state
Idle state for clock is high level, transmit (from PIC)
occurs from idle to active clock state
5.7.1
The following table represents the standard SPI mode
terminology, the respective PIC bit settings, and a
description of compatibility for the MCP3909 device.
The MCP3909 works in SPI mode 0,1 mode, that is the
data is clocked out of the part on the rising edge and
clocked in on the falling edge of SCK.
SPI MODE DEFINITIONS
Description
© 2009 Microchip Technology Inc.