参数资料
型号: 71M6543F-IGTR/F
厂商: Maxim Integrated
文件页数: 92/154页
文件大小: 0K
描述: IC ENERGY METER 64K FLSH 100LQFP
标准包装: 1,000
系列: *
71M6543F/71M6543G Data Sheet
corresponding sensor circuit (i.e., the CT and burden resistor for current channels or the resistor divider
network for the voltage channels).
In the 71M6543F and 71M6543G, the required VREF compensation coefficients PPMC and PPMC2 are
calculated from readable on-chip non-volatile fuses (see 4.5.2Temperature Coefficients for the
71M6543F ). These coefficients are designed to achieve ±40 ppm/°C for VREF.
4.6
Connecting I 2 C EEPROMs
I C EEPROMs or other I C compatible devices should be connected to the DIO pins SEGDIO2 and
the DIO pins SEGDIO2 and SEGDIO3 to I C pins SCL and SDATA.
2 2
SEGDIO3, as shown in Figure 33 .
Pullup resistors of roughly 10 k ? to V3P3D (to ensure operation in BRN mode) should be used for both
SDCK and SDATA signals. The DIO_EEX ( I/O RAM 0x2456[7:6] ) field must be set to 01 in order to convert
2
10 k Ω
DIO2
DIO3
V3P3D
10 k Ω
EEPROM
SDCK
SDATA
Figure 33: I C EEPROM Connection
71M6543
2
4.7
Connecting Three-Wire EEPROMs
μWire EEPROMs and other compatible devices should be connected to the DIO pins SEGDIO2 and
SEGDIO3, as described in 2.5.11 EEPROM Interface on page 65 .
4.8
UART0 (TX/RX)
The UART0 RX pin should be pulled down by a 10 k ? resistor and additionally protected by a 100 pF
ceramic capacitor, as shown in Figure 34 .
71M6543
RX
TX
100 pF 10 k Ω
RX
TX
Figure 34: Connections for UART0
92
v2
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71M6543GH 制造商:未知厂家 制造商全称:未知厂家 功能描述:电表IC
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