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MCP3909 Fiches technique(PDF) 6 Page - Microchip Technology

No de pièce MCP3909
Description  Energy Metering IC with SPI Interface and Active Power Pulse Output
Download  40 Pages
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Fabricant  MICROCHIP [Microchip Technology]
Site Internet  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3909 Fiches technique(HTML) 6 Page - Microchip Technology

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MCP3909
DS22025A-page 6
© 2006 Microchip Technology Inc.
FIGURE 1-1:
Output Timings for Active Power Pulse Outputs and Negative Power Pin.
FIGURE 1-2:
Serial Interface Timings showing Output, Rise, Hold, and CS Times.
SDO Rise Time
tR
—2
ns
SDO Fall Time
tF
—2
ns
TIMING CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all parameters apply at AVDD = DVDD = 4.5V to 5.5V,
AGND, DGND = 0V, MCLK = 3.58 MHz; TA = -40°C to +85°C.
Parameter
Sym
Min
Typ
Max
Units
Comment
Note 1: If output pulse period (tFP) falls below 984376*2 MCLK periods, then tFW = 1/2 tFP.
2: If output pulse period (tHP) falls below 322160*2 MCLK periods, then tHW = 1/2 tHP. When F2, F1, F0
equals 0,1,1, the HFOUT pulse time is fixed at 64 x MCLK periods or 18 µs for MCLK = 3.58 MHz
3: Specified by characterization, not production tested.
4: Serial timings specified and production tested with 180 pF load.
FOUT0
tFP
FOUT1
HFOUT
tFW
tHP
tHW
tFS
tFS2
NEG
CS
CLK
SDI
tSU
tHD
tSUCS
tHI tLO
SDO
tDO
tR
tF
tDIS
tCLK
Hi-z


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