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參數資料
| 型號： | 71M6521FE-IMR/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QCC68 |
| 封裝： | LEAD FREE, LQFN-68 |
| 文件頁數： | 48/103頁 |
| 文件大小： | 1691K |
| 代理商： | 71M6521FE-IMR/F |
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71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 49 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
System Timing Summary
Figure 16 summarizes the timing relationships between the input MUX states, the CE_BUSY signal, and the two serial output
streams.
In this example, MUX_DIV=4 and FIR_LEN=1 (384). The duration of each MUX frame is 1 + MUX_DIV * 2 if
FIR_LEN=288, and 1 + MUX_DIV * 3 if FIR_LEN=384. An ADC conversion will always consume an integer number of CK32
clocks. Followed by the conversions is a single CK32 cycle where the bandgap voltage is allowed to recover from the change
in CROSS.
Each CE program pass begins when ADC0 (channel IA) conversion begins. Depending on the length of the CE program, it
may continue running until the end of the ADC3 (VB) conversion. CE opcodes are constructed to ensure that all CE code
passes consume exactly the same number of cycles. The result of each ADC conversion is inserted into the CE DRAM when
the conversion is complete. The CE code is written to tolerate sudden changes in ADC data. The exact CK count when each
ADC value is loaded into DRAM is shown in Figure 16.
Figure 16 also shows that the serial RTM data stream begins transmitting at the beginning of state ‘S.’ RTM, consisting of 140
CK cycles, will always finish before the next code pass starts.
CK32
MUX STATE
0
MUX_DIV Conversions, MUX_DIV=1 (4 conversions) is shown
Settle
ADC MUX Frame
ADC EXECUTION
S
MUX_SYNC
S
CE_EXECUTION
RTM
140
MAX CK COUNT
0
450
150
900
1350
1800
ADC0
ADC1
ADC2
ADC3
CK COUNT = CE_CYCLES + floor((CE_CYCLES + 2) / 5)
NOTES:
1. ALL DIMENSIONS ARE 5MHZ CK COUNTS.
2. THE PRECISE FREQUENCY OF CK IS 150*CRYSTAL FREQUENCY = 4.9152MHz.
3. XFER_BUSY OCCURS ONCE EVERY (PRESAMPS * SUM_CYCLES) CODE PASSES.
CE_BUSY
XFER_BUSY
INITIATED BY A CE OPCODE AT END OF SUM INTERVAL
ADC TIMING
CE TIMING
RTM TIMING
1
2
3
Figure 16: Timing Relationship between ADC MUX, Compute Engine, and Serial Transfers.
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| 71M6521FE-IM/F | SPECIALTY ANALOG CIRCUIT, QCC68 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 71M6521-TGP1-68M | 制造商:Maxim Integrated Products 功能描述:Programmer Accessories Gang Programmer Base w/6521 Socket Brd |
| 71M6523-DB | 功能描述:開發板和工具包 - 8051 71M6521D Demo Brd RoHS:否 制造商:Silicon Labs 產品:Development Kits 工具用于評估:C8051F960, Si7005 核心: 接口類型:USB 工作電源電壓: |
| 71M6523-IM | 功能描述:計量片上系統 - SoC Residential 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 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6523-IM/F | 功能描述:計量片上系統 - SoC Residential 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 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6523-IMR | 功能描述:計量片上系統 - SoC Residential 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 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
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