參數(shù)資料
型號： 71M6533H-IGT/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號調理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP100
封裝： LEAD FREE, LQFP-100
文件頁數(shù)： 34/124頁
文件大小： 2008K
代理商： 71M6533H-IGT/F
FDS_6533_6534_004
71M6533/71M6534 Data Sheet
v1.1
2007-2009 TERIDIAN Semiconductor Corporation
17
1.2.14 CE Functional Overview
The ADC processes one sample per channel per multiplexer cycle. Figure 5 shows the timing of the
samples taken during one multiplexer cycle (phases A, B, and C being processed). During an ALT mul-
tiplexer sequence, missing samples are filled in by the CE.
The number of samples processed during one accumulation cycle is controlled by the I/O RAM registers
PRE_SAMPS (0x2001[7:6]) and SUM_CYCLES (0x2001[5:0]). The integration time for each energy output is:
PRE_SAMPS * SUM_CYCLES / 2520.6, where 2520.6 is the sample rate in Hz
For example, PRE_SAMPS = 42 and SUM_CYCLES = 50 will establish 2100 samples per accumulation
cycle. PRE_SAMPS = 100 and SUM_CYCLES = 21 will result in the exact same accumulation cycle of 2100
samples or 833 ms. After an accumulation cycle is completed, the XFER_BUSY interrupt signals to the
MPU that accumulated data are available.
Figure 5: Samples from Multiplexer Cycle
The end of each multiplexer cycle is signaled to the MPU by the CE_BUSY interrupt. At the end of each
multiplexer cycle, status information, such as sag data and the digitized input signal, is available to the MPU.
Figure 6: Accumulation Interval
Figure 6 shows the accumulation interval resulting from PRE_SAMPS = 42 and SUM_CYCLES = 50, con-
sisting of 2100 samples of 397s each, followed by the XFER_BUSY interrupt. The sampling in this ex-
ample is applied to a 50 Hz signal.
VA
VB
IB
VC
IC
IA
1/2520.6Hz = 397s
2/32768Hz =
61.04s
13/32768Hz = 397s
per mux cycle
A
C
B
VA
VB
IB
VC
IC
IA
1/2520.6Hz = 397s
2/32768Hz =
61.04s
13/32768Hz = 397s
per mux cycle
A
C
B
XFER_BUSY
Interrupt to MPU
20ms
833ms
相關PDF資料
PDF描述
71M6533-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6534H-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP120
71M6533-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP100
71M6534-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP120
71M6533-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP100
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71M6533H-IGTR/F1 功能描述:計量片上系統(tǒng) - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
71M6533H-IGTR/F2 功能描述:計量片上系統(tǒng) - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
71M6533-IGT/F 功能描述:計量片上系統(tǒng) - SoC Precision Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
71M6533-IGT/F1 功能描述:計量片上系統(tǒng) - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel
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