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| 型号： | MAX71020AEUI+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 27/35页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METER 1PH 28TSSOP |
| 标准包装： | 50 |
| 输入阻抗： | 50 千欧 ~ 100 千欧 |
| 测量误差： | 0.5% |
| 电压 - 高输入/输出： | 2V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 4.3mA |
| 电源电压： | 2.8 V ~ 3.6 V |
| 测量仪表类型： | 单相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
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MAX71020
Single-Chip Electricity Meter AFE
Table 8. Hardware Control Register Map (continued)
NAME
BYTE
ADDRESS
R/W
DEFAULT
VALUE*
DESCRIPTION
AFE Supply Voltage Status. Bits 1:0 reflect system power status:
VSTAT
RESET
0x312
0x322
R
WO
—
—
00: System power-OK: V V3P3A > 3.0V
01: System power-low: 2.8V < V V3P3A < 3.0V
11: System power-fail: V V3P3A < 2.8V
Write 0x8100 0000 to this register to reset the AFE.
Configures aspects of the temperature measurement subsystem. Loaded by
the LE.
BIT
1:0
NAME
Reserved
—
DESCRIPTION
TEMP_CNF
0x323
R/W
0x0000
0000
3:2
TEMP_PER
Sets the period between temperature measurements.
01: Measure every accumulation cycle
10: Continuous measurement
Other values disable automatic updates.
4
31:5
TEMP_SYS
Reserved
When set, V V3P3SYS is measured at every temperature
measurement cycle
—
TEMP_START
0x324
R/W
0x0000
0000
Write 0x8000 0000 to start a temperature conversion cycle. When conversion is
complete, the AFE clears bit 31 and returns the register to zero.
Write 0x8000 0000 to this word to lock the SPI port. When the SPI port is
SPI_SAFE
0x325
R/W
0x0000
0000
locked, no read or write operations are possible except to the SPI_SAFE
register. Clearing this register to zero disables the SPI lock and restores normal
operation.
Enables aspects of the AFE.
BIT
NAME
DESCRIPTION
METER_EN
0x326
R/W
0x0000
0000
0
ADC_E
Enable ADC and VREF buffer. Must be set by host
following initialization.
1
31:2
CE_E
Reserved
Enable CE. Must be set by host following initialization.
—
* Default values given for standard CE code (2520 sample frequency, gain = 9).
CE Interface Description
The CE reads the ADC and stores its results in the 1KB
block at 0x000. Since all CE operations are 32 bits wide,
the CE data memory occupies the first 256 32-bit loca-
tions, from 0x000 to 0x0FF.
Note: The CE interface described in the data sheet is a
description of the released CE code. Contact your rep-
resentative or Maxim Integrated technical support for the
latest information on alternate CE codes.
Maxim Integrated
CE Data Format
All CE words are 4 bytes. Unless specified otherwise, they
are in 32-bit two’s complement format (-1 = 0xFFFFFFFF).
Calibration parameters are copied to CE data memory by
the host controller before enabling the CE. Internal vari-
ables are used in internal CE calculations. Input variables
allow the MPU to control the behavior of the CE code.
27
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX71020AEUI+ | 功能描述:电信线路管理 IC Single-Chip AFE Electricity Meter RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| MAX71020AEUI+R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Single-Chip Electricity Meter AFE |
| MAX710C/D | 功能描述:直流/直流开关转换器 3.3V/5V or Adjustable Step-Up Step-Down DC-DC Converters RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX710C/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX710ESE | 功能描述:直流/直流开关转换器 3.3/5V or Adjustable Step-Up Step-Down RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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