参数资料
型号: 71M6521FE-IMR/F
厂商: Maxim Integrated
文件页数: 69/107页
文件大小: 0K
描述: IC ENERGY METER 32K FLASH 68-QFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
系列: Single Converter Technology®
测量误差: 0.4%
电源电压: 3 V ~ 3.6 V
测量仪表类型: 单相,双相
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘
供应商设备封装: 64-QFN(7.5x7.5)
包装: 带卷 (TR)
71M6521DE/DH/FE Data Sheet
Connecting Three-Wire EEPROMs
μWire EEPROMs and other compatible devices should be connected to the DIO pins DIO4 and DIO5, as shown in
Figure 36. DIO5 connects to both the DI and DO pins of the three-wire device. The CS pin must be connected to a
vacant DIO pin of the 71M6521DE/DH/FE. A pull-up resistor of roughly 10k ? to V3P3D (to ensure operation in
BROWNOUT mode) should be used for the DI/DO signals, and the CS pin should be pulled down with a resistor to
prevent that the three-wire device is selected on power-up, before the 71M6521DE/DH/FE can establish a stable
signal for CS. The DIO_EEX register in I/O RAM must be set to 10 in order to convert the DIO pins DIO4 and DIO5 to
MICROWIRE pins. The pull-up resistor for DIO5 may not be necessary.
71M6521
10k Ω
10k Ω
V3P3D
EEPROM
DIO4
DIO5
DIOn
SCLK
DI
DO
CS
Figure 36: Three-Wire EEPROM Connection
UART0 (TX/RX)
The RX pin should be pulled down by a 10k ? resistor and additionally protected by a 100pF ceramic capacitor, as
shown in Figure 37.
71M6521E
RX
TX
100pF
10k Ω
RX
TX
Figure 37: Connections for the RX Pin
Rev 3
Page: 69 of 107
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