71M6543F-IGT/F Maxim Integrated Products, 71M6543F-IGT/F Datasheet - Page 94

• Manufacturer Part Number: 71M6543F-IGT/F
• Description: PMIC Solutions Precision Energy Meter IC
• Manufacturer: Maxim Integrated Products
• Type: Metering SoCr

Specifications of 71M6543F-IGT/F

• Core: 8051
• Core Architecture: 8051
• Data Bus Width: 8 bit
• Data Ram Size: 5 KB
• Device Million Instructions Per Second: 5 MIPS
• Interface Type: I2C, ICE, SPI, UART
• Maximum Clock Frequency: 5 MHz
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Programmable I/os: 51
• Number Of Timers: 2
• On-chip Adc: 22 bit
• Operating Supply Voltage: 3 V to 3.6 V
• Package / Case: LQFP-100
• Processor Series: 8051
• Program Memory Size: 64 KB
• Program Memory Type: Flash
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

71M6543F/H and 71M6543G/GH Data Sheet
behavior of each individual part across industrial temperatures (see
the 71M6543H).
4.6
I
SEGDIO3, as shown in
Pullup resistors of roughly 10 kΩ 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
the DIO pins SEGDIO2 and SEGDIO3 to I
4.7
µWire EEPROMs and other compatible devices should be connected to the DIO pins SEGDIO2 and
SEGDIO3, as described in
4.8
The UART0 RX pin should be pulled down by a 10 kΩ resistor and additionally protected by a 100 pF
ceramic capacitor, as shown in
4.9
The OPT_TX and OPT_RX pins can be used for a regular serial interface (by connecting a RS_232
transceiver for example), or they can be used to directly operate optical components (for example, an
infrared diode and phototransistor implementing a FLAG interface).
94
2
C EEPROMs or other I
Connecting I
Connecting Three-Wire EEPROMs
UART0 (TX/RX)
Optical Interface (UART1)
The resulting tracking of the reference VREF voltage is within ±10 ppm/°C.
Figure
2
2
C compatible devices should be connected to the DIO pins SEGDIO2 and
C EEPROMs
2.5.11 EEPROM Interface
© 2008–2011 Teridian Semiconductor Corporation
33.
Figure
71M6543
Figure 33: I
Figure 34: Connections for UART0
71M6543
34.
TX
2
DIO2
RX
DIO3
C pins SCL and SDATA.
2
10 k Ω
C EEPROM Connection
100 pF
on page 66.
10 k Ω
10 k Ω
EEPROM
SDCK
SDATA
V3P3D
Figure 35
4.5.3 Temperature Coefficients for
TX
RX
shows the basic connections
v1.2