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參數資料
| 型號： | 71M6521DE-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： | 59/103頁 |
| 文件大小： | 1691K |
| 代理商： | 71M6521DE-IMR/F |
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71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 59 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
Data Flow
The data flow between CE and MPU is shown in Figure 26. In a typical application, the 32-bit compute engine (CE) sequen-
tially processes the samples from the voltage inputs on pins IA, VA, IB, and VB, performing calculations to measure active
power (Wh), reactive power (VARh), A
2h, and V2h for four-quadrant metering. These measurements are then accessed by the
MPU, processed further and output using the peripheral devices available to the MPU.
CE
MPU
Pre-
Processor
Post-
Processor
IRQ
Processed
Metering
Data
Pulses
I/O RAM (Configuration RAM)
Samples
Data
Figure 26: MPU/CE Data Flow
CE/MPU Communication
Figure 27 shows the functional relationship between CE and MPU. The CE is controlled by the MPU via shared registers in the
I/O RAM and by registers in the CE DRAM. The CE outputs two interrupt signals to the MPU: CE_BUSY and XFER_BUSY,
which are connected to the MPU interrupt service inputs as external interrupts. CE_BUSY indicates that the CE is actively
processing data. This signal will occur once every multiplexer cycle. XFER_BUSY indicates that the CE is updating data to the
output region of the CE DRAM. This will occur whenever the CE has finished generating a sum by completing an accumulation
interval determined by SUM_CYCLES * PRE_SAMPS samples. Interrupts to the MPU occur on the falling edges of the
XFER_BUSY and CE_BUSY signals.
MPU
CE
PULSES
INTERRUPTS
DISPLAY (me-
mory-mapped
LCD segments)
DIO
EEPROM
(I2C)
SERIAL
(UART0/1)
SAMPLES
VAR (DIO7)
W (DIO6)
VAR
SU
M
W
S
UM
ADC
EXT_PULSE
CE_BUSY
XFER_BUSY
Mux Ctrl.
DATA
APULSEW
APULSER
SAG CONTROL
I/O RAM (CONFIGURATION RAM)
Figure 27: MPU/CE Communication
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 71M6521DH | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521DH-IGT/F | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521DH-IGTR/F | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Energy Meter ICs |
| 71M6521FE | 制造商:TERIDIAN 制造商全稱:TERIDIAN 功能描述:Energy Meter IC |
| 71M6521FE-DB | 功能描述:開發板和工具包 - 8051 71M6521FE 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: |
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