参数资料
型号: ARD00280
厂商: Microchip Technology
文件页数: 25/50页
文件大小: 0K
描述: KIT REF DESIGN PIC18F87J72 1PH
设计资源: PIC18F87J72 BOM
PIC18F87J72 Schematics
PIC18F87J72 Gerber Files
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式: 是,MCU,8 位
已用 IC / 零件: PIC18F87J72
主要属性: 单相分流电度表
已供物品:
Calculation Engine and Register Description
3.11
RAW2_V_RMS
Name
RAW2_V_RMS
Bits
64
Cof
R
This register is the square of the raw RMS value from the voltage A/D converter in
LSBs. By definition, it will always contain a positive value. This register is overwritten
every LINE_CYC line cycle (written only once if the calibration is enabled).
3.12
RAW_V_RMS
Name
RAW_V_RMS
Bits
16
Cof
R
This is the raw RMS value from the voltage A/D converter in LSBs (square root of the
top 32-bits of RAW2_V_RMS + OFFSET_V_RMS. By definition, this register will
always contain a positive value. The register is overwritten every LINE_CYC line cycle
(written only once if the calibration is enabled).
3.13
V_RMS
Name
V_RMS
Bits
16
Cof
R
This register is the RMS value of the voltage, in X 0.01 V/LSB, as determined by the
value in the GAIN_V_RMS register. When displaying the RMS voltage, assume a cal-
ibrated meter exists and multiply the (decimal) value in these registers by X to get the
display value in Volts. This register is overwritten every LINE_CYC line cycle (written
only once if the calibration is enabled).
3.14
LINE_FREQUENCY
Name
LINE_FREQUENCY
Bits
16
Cof
R
This register holds the measured line frequency using the zero crossing technique.
? 2011 Microchip Technology Inc.
DS51931A-page 25
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