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参数资料
| 型号： | 71M6542G-IGT/F |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 封装： | LEAD FREE, LQFP-100 |
| 文件页数： | 7/165页 |
| 文件大小： | 2208K |
| 代理商： | 71M6542G-IGT/F |
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104
2008–2011 Teridian Semiconductor Corporation
v1.1
4.14
Flash Programming
4.14.1 Flash Programming via the ICE Port
Operational or test code can be programmed into the flash memory using either an in-circuit emulator or
the Flash Programmer Module (TFP-2) available from Teridian. The flash programming procedure uses
the E_RST, E_RXTX, and E_TCLK pins.
4.14.2 Flash Programming via the SPI Port
It is possible to erase, read and program the flash memory of the via the SPI port. See 2.5.10 SPI Slave
Port for a detailed description.
4.15
MPU Firmware Library
All application-specific MPU functions mentioned in 4 Application Information are featured in the
demonstration C source code supplied by Teridian. The code is available as part of the Demonstration Kit
for the 71M6541D/F and 71M6542F. The Demonstration Kits come with the preprogrammed with demo
firmware and mounted on a functional sample meter Demo Board. The Demo Boards allow for quick and
efficient evaluation of the IC without having to write firmware or having to supply an in-circuit emulator
(ICE).
4.16
Crystal Oscillator
The oscillator of the 71M6541D/F and 71M6542F drives a standard 32.768 kHz watch crystal. The oscillator
has been designed specifically to handle these crystals and is compatible with their high impedance and
limited power handling capability. The oscillator power dissipation is very low to maximize the lifetime of
any battery backup device attached to the VBAT_RTC pin.
Board layouts with minimum capacitance from XIN to XOUT require less battery current. Good layouts
have XIN and XOUT shielded from each other and from LCD and digital signals.
Since the oscillator is self-biasing, an external resistor must not be connected across the crystal.
4.17
Meter Calibration
Once the Teridian 71M654x energy meter device has been installed in a meter system, it must be
calibrated. A complete calibration includes the following:
Establishment of the reference temperature (e.g., typically 22
C)
Calibration of the metrology section, i.e., calibration for tolerances of the current sensors, voltage
dividers and signal conditioning components as well as of the internal reference voltage (VREF) at
the reference temperature (e.g., typically 22
C).
Calibration of the oscillator frequency using the RTCA_ADJ[7:0] I/O RAM register (I/O RAM 0x2504).
The metrology section can be calibrated using the gain and phase adjustment factors accessible to the
CE. The gain adjustment is used to compensate for tolerances of components used for signal conditioning,
especially the resistive components. Phase adjustment is provided to compensate for phase shifts
introduced by the current sensors or by the effects of reactive power supplies.
Due to the flexibility of the MPU firmware, any calibration method, such as calibration based on energy, or
current and voltage can be implemented. It is also possible to implement segment-wise calibration
(depending on current range).
The 71M6541D/F and 71M6542F support common industry standard calibration techniques, such as
single-point (energy-only), multi-point (energy, Vrms, Irms), and auto-calibration.
Teridian provides a calibration spreadsheet file to facilitate the calibration process. Contact your Teridian
representative to obtain a copy of the latest calibration spreadsheet file for the 71M654x.
相关PDF资料 |
PDF描述 |
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| 71M6541G-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6541F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP64 |
| 71M6543F-IGT/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6543H-IGTR/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
| 71M6543F-IGTR/F | SPECIALTY ANALOG CIRCUIT, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6542G-IGTR/F | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| 71M6542GT-IGT/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE, 128KB, PRES TEMP SENSOR - Bulk |
| 71M6542GT-IGTR/F | 制造商:Maxim Integrated Products 功能描述:1-PHASE, 128KB, PRES TEMP SENSOR - Tape and Reel |
| 71M6543F | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation |
| 71M6543F-DB | 功能描述:开发板和工具包 - 8051 71M6543 Eval Kit RoHS:否 制造商:Silicon Labs 产品:Development Kits 工具用于评估:C8051F960, Si7005 核心: 接口类型:USB 工作电源电压: |
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