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參數資料
| 型號： | 71M6521FE-IGTR/F |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, QFP64 |
| 封裝： | LEAD FREE, LQFP-64 |
| 文件頁數： | 70/103頁 |
| 文件大小： | 1691K |
| 代理商： | 71M6521FE-IGTR/F |
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71M6521DE/71M6521FE
Energy Meter IC
DATA SHEET
OCTOBER 2010
v1.1
2005-2010 Teridian Semiconductor Corporation
Page: 69 of 103
A Maxim Integrated Products Brand
19-5370; 10/10
R
1
RESET
71M6521
DGND
100
Ω
R
1
RESET
71M6521
DGND
100
Ω
V3P3
R
2
V1
R
1
R
3
5k
Ω
C
1
100pF
GND
V3P3
R
2
V1
R
1
R
3
5k
Ω
C
1
100pF
GND
Figure 37: Voltage Divider for V1
Even though a functional meter will not necessarily need a reset switch, it is useful to have a reset pushbutton for prototyping,
as shown in Figure 38, left side. The RESET signal may be sourced from V3P3SYS (functional in MISSION mode only),
V3P3D (MISSION and BROWNOUT modes), VBAT (all modes, if battery is present), or from a combination of these sources,
depending on the application. For a production meter, the RESET pin should be protected by the external components shown
in Figure 38, right side. R1 should be in the range of 100 and mounted as closely as possible to the IC.
Since the 71M6521DE/FE generates its own power-on reset, a reset button or circuitry, as shown in Figure 38, left
side, is only required for test units and prototypes.
R
1
RESET
71M6521
DGND
V3P3D
R
2
VBAT/
V3P3D
Reset
Switch
1k
Ω
1nF
10k
Ω
R
1
RESET
71M6521
DGND
V3P3D
R
2
VBAT/
V3P3D
Reset
Switch
1k
Ω
1nF
10k
Ω
Figure 38: External Components for RESET: Development Circuit (Left), Production Circuit (Right)
Connecting the Emulator Port Pins
Capacitors to ground must be used for protection from EMI. Production boards should have the ICE_E pin connected to
ground.
If the ICE pins are used to drive LCD segments, the pull-up resistors should be omitted, as shown in Figure 39, and 22pF
capacitors to GNDD should be used for protection from EMI.
It is important to bring out the ICE_E pin to the programming interface in order to create a way for reprogramming
parts that have the flash SECURE bit (SFR 0xB2[6]) set. Providing access to ICE_E ensures that the part can be reset
between erase and program cycles, which will enable programming devices to reprogram the part. The reset required is im-
plemented with a watchdog timer reset (i.e. the hardware WDT must be enabled).
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| 71M6531D-IMR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, QCC68 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 71M6521FE-IM | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IM/F | 功能描述:計量片上系統 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6521FEIM-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6521FE Demo Brd |
| 71M6521FE-IMR | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Energy Meter IC |
| 71M6521FE-IMR/F | 功能描述:計量片上系統 - SoC Residential Energy Meter IC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時鐘頻率:70 Hz 程序存儲器大小:64 KB 數據 RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數量:12 片上 ADC: 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
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