MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 20

• Manufacturer Part Number: MCP3909RD-1PH1
• Description: BOARD DES MCP3909 ENERGY METER
• Manufacturer: Microchip Technology

Specifications of MCP3909RD-1PH1

• Main Purpose: Power Management, Energy/Power Meter
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP3909, PIC18F85J90
• Primary Attributes: Single Phase Shunt Energy Meter
• Secondary Attributes: 16 Bit ADC
• Ic Function: Single Phase Energy Measurement IC
• Supply Voltage Range: 4.5V To 5.5V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 24
• Interface Type: SPI
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

MCP3909/PIC18F85J90 Single Phase Energy Meter Reference Design
3.4
3.4.1
DS51884A-page 20
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 13-15
bit 11-12
bit 8-10
bit 6-7
bit 3-5
bit 2
bit 1
bit 0
R/W-0
APP2
PGA1
R/W
CONFIGURATION AND OUTPUT REGISTERS
MODE1 Register
APP: Apparent Power Calculation Mode Bits (not implemented)
ACT: Active Power Calculation Mode Bits (not implemented)
Unimplemented: Read as ‘0’
PGA: PGA Bits (not implemented)
CF Phase y: Active Energy CF Phase Enable Bits
1 = Enabled to be accumulated into the total energy registers or CF pulse output
0 = Disabled and is not acculated into the total energy registers or CF pulse output
Absolute: Positive Only Energy Accumulation Mode
1 = Positive Energy Only
0 = Both negative and positive energy accumulated (negative energy is subtracted)
Phase: The Phase Bit
1 = Single Point Phase Correction
0 = Multi-Point Phase Correction (future)
CREEP: No-Load Threshold Bit
1 = Enabled
0 = Disabled
APP1
PGA0
R/W
R/W
REGISTER 3-1:
The mode register controls the operation of the energy meter. The bit functions are
defined below.
MODE1
Name
W = Writable bit
‘1’ = Bit is set
APP0
CF_C
R/W
R/W
Bits
16
MODE1 REGISTER
ACT1
CF_B
R/W
R/W
Address
0x000
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
ACT0
CF_A
R/W
R/W
R/W
Cof
ABSOLUTE
R/W
U-0
—
© 2009 Microchip Technology Inc.
x = Bit is unknown
PHASE
R/W
U-0
—
CREEP
R/W
U-0
—
bit 8
bit 0