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參數(shù)資料
| 型號： | 71M6511-IGTR |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 封裝： | LQFP-64 |
| 文件頁數(shù)： | 79/98頁 |
| 文件大小： | 1278K |
| 代理商： | 71M6511-IGTR |
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71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
NOVEMBER 2010
Page: 80 of 98
2005–2010 Teridian Semiconductor Corporation
V2.7
A Maxim Integrated Products Brand
Crystal Oscillator
The oscillator 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 VBAT.
Board layouts with minimum capacitance from XIN to XOUT will require less battery current. Good layouts will have XIN and
XOUT shielded from each other.
For best rejection of electromagnetic interference, connect the crystal body and the ground terminals of the two
crystal capacitors to GNDD through a ferrite bead. No external resistor should be connected across the crystal,
since the oscillator is self-biasing.
Connecting LCDs
The 71M6511 has a LCD controller on-chip capable of controlling static or multiplexed LCDs. Figure 31 shows the basic
connection for a LCD.
segments
71M6511
LCD
commons
segments
71M6511
LCD
commons
Figure 31: Connecting LCDs
Figure 32 shows how 5V LCDs can be operated even when a 5V supply is not available. Setting the I/O RAM register
LCD_BSTEN to 1 starts the on-chip boost circuitry that will output an AC frequency on the VDRV pin. Using a small coupling
capacitor, two general-purpose diodes and a reservoir capacitor, a 5VDC voltage is generated which can be fed back into the
VLCD pin of the 71M6511. The LCD drivers are enabled with the I/O register LCD_ON; I/O register LCD_FS is used to adjust
contrast, and LCD_MODE selects the operation mode (LCD type).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 71M6511H-IGTR/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 71M6511H-IGT/F | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 71M6511H-IGT | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 71M6511H-IGTR | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQFP64 |
| 71M6521DE-IGTR/F | SPECIALTY ANALOG CIRCUIT, QFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 71M6511-IGTR/F | 功能描述:計量片上系統(tǒng) - SoC Highly Integrated SoC w/MCU Core 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(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6511-IGTR/F1 | 功能描述:計量片上系統(tǒng) - SoC 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(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 71M6512-DB | 制造商:Maxim Integrated Products 功能描述:Development Boards & Kits - 8051 71M6512 Demo Brd |
| 71M6512-IM/F | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Meter Extended Io |
| 71M6512-IMR/F | 制造商:Maxim Integrated Products 功能描述:Metering Systems on a Chip - SoC Residential Meter Extended Io |
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