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| 型号： | 71M6513-IGTR/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： | 27/104页 |
| 文件大小： | 1390K |
| 代理商： | 71M6513-IGTR/F |
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71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
2005-2011 Teridian Semiconductor Corporation
Page: 29 of 104
A Maxim Integrated Products Brand
Refreshing the WD Timer: The watchdog timer must be refreshed regularly to prevent the reset request signal from
becoming active. This requirement imposes an obligation on the programmer to issue two instructions. The first instruction
sets WDT and the second instruction sets SWDT. The maximum delay allowed between setting WDT and SWDT is 12 clock
cycles. If this period has expired and SWDT has not been set, WDT is automatically reset, otherwise the watchdog timer is
reloaded with the content of the WDTREL register and WDT is automatically reset. Since the WDT requires exact timing,
firmware needs to be designed with special care in order to avoid unwanted WDT resets. Teridian strongly discourages the
use of the software WDT.
Special Function Registers for the WD Timer
Interrupt Enable 0 Register (IEN0):
MSB
LSB
EAL
WDT
ET2
ES0
ET1
EX1
ET0
EX0
Table 25: The IEN0 Register (see also Table 32)
Bit
Symbol
Function
IEN0.6
WDT
Watchdog timer refresh flag.
Set to initiate a refresh of the watchdog timer. Must be set directly before SWDT is
set to prevent an unintentional refresh of the watchdog timer. WDT is reset by
hardware 12 clock cycles after it has been set.
Table 26: The IEN0 Bit Functions (see also Table 32)
Note: The remaining bits in the IEN0 register are not used for watchdog control
Interrupt Enable 1 Register (IEN1):
MSB
LSB
EXEN2
SWDT
EX6
EX5
EX4
EX3
EX2
Table 27: The IEN1 Register (see also Tables 30/31)
Bit
Symbol
Function
IEN1.6
SWDT
Watchdog timer start/refresh flag.
Set to activate/refresh the watchdog timer. When directly set after setting WDT, a
watchdog timer refresh is performed. Bit SWDT is reset by the hardware 12 clock
cycles after it has been set.
Table 28: The IEN1 Bit Functions (see also Tables 30/31)
Note: The remaining bits in the IEN1 register are not used for watchdog control
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 71M6515H | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Energy Meter IC |
| 71M6515H_11 | 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Up to 10ppmC precision ultra-stable voltage reference Digital temperature compensation |
| 71M6515H-DB | 功能描述:开发板和工具包 - 8051 71M6515H Demo Brd 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: |
| 71M6515H-IGT | 制造商:Maxim Integrated Products 功能描述:METERING FRONT END - Rail/Tube |
| 71M6515H-IGT/F | 功能描述:计量片上系统 - SoC Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 处理器系列:71M6511 类型:Metering SoC 最大时钟频率:70 Hz 程序存储器大小:64 KB 数据 RAM 大小:7 KB 接口类型:UART 可编程输入/输出端数量:12 片上 ADC: 安装风格:SMD/SMT 封装 / 箱体:LQFP-64 封装:Reel |
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