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道唐与Cirrus Logic成功签定对CS7401技术支持
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与Cirrus Logic签定CS7401产品第三方合作协议
Cirrus Logic的CS7401产品的技术支持2009年由道唐友维（北京）科技有限公司提供
CS7401xx
Energy Measurement SoC
Description
The CS7401xx energy measurement system-on-chip (SoC) device
reduces the cost to implement advanced digital power meters
for electrical utilities as well as enabling many other energy conservation
applications. The 24-bit Delta-Sigma (ΔΣ) ADCs coupled
with the on-chip metrology code enable the highest quality power
measurement available. The 32-bit processor and targeted peripherals
have the power to implement metrology, advanced data management
standards, and communication protocols all in the same
device. The extensive software library enables quick and easy program
development.
Features
• Analog-to-Digital Converter
- Three Independent 24-bit Delta-Sigma ADCs
- Selectable Sampling Rate (1 kHz-8 kHz)
- FIFO for Buffered Data Collection
- Voltage and Current Sampled Simultaneously
- Third ADC can be used for Tamper Detection
- On-chip Temperature Sensor
• Analog Front End
- Single-ended or Differential Inputs
- Programmable Gain (1x, 3x, 6x, 12x)
- Supports 50 μΩ Shunts
- 1.8V Reference Compensated to 10 ppm/°C
• Measurement
- ANSI C12-20 / IEC 62053-22 Class 0.2% Accuracy
- Active Power Accuracy ±0.1% Over 3000:1 Range
- Fast Phase Calibration up to ±18° Range
- Wide Frequency Range: 45 Hz to 70 Hz
- Supports Total and Fundamental Measurements for
Active, Reactive, and Apparent Power
• Microcontroller Subsystem
- ARM7TDMI™ 16/32-bit RISC CPU
- Dynamic Core Frequency from 4 MHz to 32 MHz
- 32kB, 64kB, or 128kB On-chip Flash Memory
- Flash Locking Mechanism to Protect User's Program
- 8 kB On-chip RAM, 32kB On-chip ROM
- Single 32 kHz Crystal with FLL to Internal Oscillator
- Internal Oscillator: Robust Operation with EFT Events
- On-chip Crystal Capacitors for Frequency Stability
- JTAG Interface
• On-chip Peripherals
- LCD Driver with up to 120 Segments (30 x 4)
- RTC with Auto Calibration and 1Hz Output
- Two UART Communications Ports
- Configurable Sync Serial Port with SPI™ Mode
- Programmable GPIOs, Timers, and Watchdog Timer
- Dedicated Energy Pulse Output
• ROM Profile
- Factory-ready Communications using UART0
- Automated/Fast Calibration of Gain, Offset, and Phase
- Power Measurement Access for Evaluation
- Power Management for Low-power Operation
- General-purpose Device Drivers
- Program Loader for Flash Code Download
• Advanced Power Management
- On-chip Switching Buck Converter for Internal 1.8V
- 5 mA @ 4 MHz, 17 mA @ 32MHz
- Low-power Mode: 25 μA @ 16kHz
- Power Supervisor with Power On Reset (POR)
- Programmable Battery Monitoring
- Programmable Brown-out
• Other
- Single Power Supply; VH = +2.6 to +3.6 V
- 64-lead LQFP Package
- Temperature Range: -40 °C to +85 °C
- Supports ARM7™ Industry-standard Tools
- Supports Shunts & Current Transformers (CTs)
- Customer Development Board (CDB) Available
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作者:
DAOTANG |
编辑:
DAOTANG |
来源:
DAOTANG |
2009-01-10 17:38 |
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