参数资料
型号: 71M6511-DB
厂商: Maxim Integrated Products
文件页数: 62/115页
文件大小: 0K
描述: BOARD DEMO 71M6511 ENERGY METER
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电源管理,电度表/功率表
嵌入式:
已用 IC / 零件: 71M6511
已供物品: 2 个板,线缆,CD,电源
71M6511/71M6511H Demo Board User’s Manual
J12 on the 2-Layer Demo Boards has all the provisions for connecting the IR LED and photo-transistor (see
Figure 2-15). Depending on the required LED current, R79 may have to be scaled. Similarly, R84 may be
scaled or removed, depending on the current generated by the photo-transistor.
V3P3
J12
OPT_TX
OPT_RX
R79
100
OPT_TX_OUT
GND
1
2
3
4
5
HDR5x1
R84
47K
GND
OPTICAL I/F
Figure 2-15: Optical Port Circuitry on the 2-Layer Demo Board
2.4.7 CONNECTING THE RX PIN
Due to unique circuitry on the RX input, its behavior is slightly different from the other digital inputs of the
651X family of metering ICs.
The Rx pin (serial port receive pin) of the 71M6511/6511H is internally clamped to the V3P3 supply as
shown in Figure 2-16. This means, the voltage of signals applied to this pin will be clamped to V3P3D +
0.6V, i.e. nominally 3.9V. Note that this clamp voltage exceeds the 3.6V Absolute Maximum Rating of the
RX input.
Inputs above 1.6V (V IL ) are guaranteed to be recognized as logic 1. Inputs below 0.8V (V IL ) are guaranteed
to be recognized as logic 0. Input voltages between 0.8V and 1.6V must be avoided.
71M6511
RX
To serial receiver
V3P3
Figure 2-16: Internal Diode Clamp on the RX Pin
If inputs higher than 3.6V are expected at the RX pin, e.g. when interfacing to 5V-based driving circuitry such as RS-
232 transceivers/receivers, TTL or CMOS logic, a resistor attenuator should be used in order to restrict the RX input
voltage.
Page: 62 of 115
? 2005-2007 TERIDIAN Semiconductor Corporation
Revision 5.4
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71M6511H 制造商:TERIDIAN 制造商全称:TERIDIAN 功能描述:Single-Phase Energy Meter IC
71M6511H-DB 功能描述:开发板和工具包 - 8051 71M6511H 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:
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71M6511H-IGTR 制造商:Maxim Integrated Products 功能描述:RESID. HI PRECISION METR (1P, .1%) - Tape and Reel