MCP3909-I/SS Microchip Technology, MCP3909-I/SS Datasheet - Page 28

• Manufacturer Part Number: MCP3909-I/SS
• Description: IC POWER METERING-1 PHASE 24SSOP
• Manufacturer: Microchip Technology

Specifications of MCP3909-I/SS

• Package / Case: 24-SSOP (0.200", 5.30mm Width)
• Input Impedance: 390 KOhm
• Measurement Error: 0.1%
• Voltage - I/o High: 2.4V
• Voltage - I/o Low: 0.85V
• Current - Supply: 2.3mA
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Meter Type: Single Phase
• Operating Temperature Range: - 40 C to + 85 C
• Mounting Style: SMD/SMT
• Supply Voltage Range: 4.5V To 5.5V
• Digital Ic Case Style: SSOP
• No. Of Pins: 24
• Interface Type: Serial, SPI
• Supply Voltage Max: 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP3909EV-MCU16 - EVALUATION BOARD FOR MCP3909MCP3909RD-3PH1 - REF DESIGN MCP3909 3PH ENGY MTR
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

MCP3909
FIGURE 5-7:
idles low).
DS22025A-page 28
Data is clocked out
on rising edges of SCK
NEG / SDO
NEG / SDO
Device on falling edges of SCK
MCU latches data from
F2 / SCK
F2 / SCK
F1 / SDI
F1 / SDI
F0 / CS
MCU Transmit Buffer
F0 / CS
MCU Receive Buffer
MCU Transmit Buffer
MCU Receive Buffer
Multiplier Output Mode 1 SPI Communication using 8-bit segments (Mode 0,1: SCK
D19 D18 D17 D16
17
X
D3
D3
Data stored into MCU receive register
after transmission of first 8 bits
X
1
D19
Data stored into MCU receive register
after transmission of third 8 bits
18
X
D2
D2
X
D18 D17 D16
2
Don’t Care
X
19
D1 D0
D1 D0
X
3
20
X
X
4
D15 D14 D13 D12
X
21
X
0
5
D15 D14 D13
22
X
X
6
0
23
X
Don’t Care
X
0
7
24
X
X
0
8
D12
D11 D10 D9
X
Data stored into MCU receive register
after transmission of second 8 bits
D11 D10 D9
9
X
10
X
11
N = Null Bits
X = Don’t Care Bits
D8
X
12
D8
X
D7
13
D7
D6
X
14
© 2006 Microchip Technology Inc.
D6
D5
X
15
D5
X
D4
16
D4