MCP3909RD-1PH1 Microchip Technology, MCP3909RD-1PH1 Datasheet - Page 21

• 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

3.4.2
© 2009 Microchip Technology Inc.
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-3
bit 2
bit 1-0
U-0
U-0
—
—
STATUS1 Register
Unimplemented: Read as ‘0’
PHA_S: Phase A Sign Bit.
(if enabled, see MODE1 bits).
1
0
Unimplemented: Read as ‘0’
=
= Operation Normal
U-0
U-0
—
—
Negative active power, this may indicate the CT is wired in backwards
REGISTER 3-2:
The STATUS1 register contains the operational status of the energy meter. The bit
functions are defined below.
STATUS1
Name
W = Writable bit
‘1’ = Bit is set
U-0
U-0
—
—
Calculation and Register Description
Bits
16
This is the sign bit of raw active power before absolute value taken
STATUS1 REGISTER
U-0
U-0
—
—
Address
0x004
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
U-0
U-0
—
—
Cof
R
PHA_S
U-0
—
R
x = Bit is unknown
U-0
U-0
—
—
DS51884A-page 21
U-0
U-0
—
—
bit 8
bit 0