MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 28

• 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
3.5.7
3.5.8
3.5.9
3.5.10
3.5.11
3.5.12
DS51884A-page 28
ENERGY_W_GLSB (NOT IMPLEMENTED)
ENERGY_VAR_GLSB (NOT IMPLEMENTED)
CREEP_THRESH (NOT IMPLEMENTED)
CF_PULSE_WIDTH
CFDEN
CFNUM
REGISTER 3-18:
NOT IMPLEMENTED IN THIS FIRMWARE/SOFTWARE RELEASE.
REGISTER 3-19:
NOT IMPLEMENTED IN THIS FIRMWARE/SOFTWARE RELEASE.
REGISTER 3-20:
NOT IMPLEMENTED IN THIS FIRMWARE/SOFTWARE RELEASE.
REGISTER 3-21:
Defines CF pulse width from 0 to 255. Length of width is value * 8 * (1/LINEFREQ) /
128) ms. A maximum of 0.266 seconds for 60 Hz and 0.319 seconds for 50 Hz.
If the value is 0, no CF pulse is produced.
REGISTER 3-22:
8-bit signed value. Represents the number of shifts for active power energy register
ENERGY_W_L before CFNUM is applied.
REGISTER 3-23:
Active power gain to produce a specified pulses per watt-hour. The value is always less
than one (for example, 32,767 = 0.9999695).
ENERGY_W_GLSB
CREEP_THRESH
ENERGY_VAR_GLSB
CF_PULSE
CF_NUM
CF_DEN
Name
Name
Name
Name
Name
Name
ENERGY_W_GLSB REGISTER
ENERGY_VAR_GLSB REGISTER
CREEP_THRESH REGISTER
CF_PULSE_WIDTH REGISTER
CFDEN REGISTER
CFNUM REGISTER
Bits
Bits
Bits
Bits
32
16
16
8
Bits
16
Bits
16
Address
Address
Address
Address
0x1AA
0x1AC
0x1AE
0x1A6
Address
0x1A0
Address
0x1A4
R/W
R/W
R/W
R/W
Cof
Cof
Cof
Cof
R/W
Cof
R/W
Cof
© 2009 Microchip Technology Inc.