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| 型号： | 71M6543F-DB-CT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 88/91页 |
| 文件大小： | 0K |
| 描述： | DEMO BOARD 71M6543F-DB-CT |
| 标准包装： | 1 |
| 系列： | * |
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71M6543 Demo Board User’s Manual
4.11 71M6543 PIN-OUT INFORMATION
Power/Ground/NC Pins:
Table 4-6: 71M6543 Pin Description Table 1/3
Name
GNDA
GNDD
V3P3A
V3P3SYS
V3P3D
VDD
VLCD
VBAT
VBAT_RTC
Type
P
P
P
P
O
O
O
P
P
Description
Analog ground: This pin should be connected directly to the ground plane.
Digital ground: This pin should be connected directly to the ground plane.
Analog power supply: A 3.3 V power supply should be connected to this pin.
V3P3A must be the same voltage as V3P3SYS.
System 3.3 V supply. This pin should be connected to a 3.3 V power supply.
Auxiliary voltage output of the chip. In mission mode, this pin is connected
to V3P3SYS by the internal selection switch. In BRN mode, it is internally
connected to VBAT. V3P3D is floating in LCD and sleep mode. A bypass
capacitor to ground should not exceed 0.1 μF.
The output of the 2.5V regulator. This pin is powered in MSN and BRN
modes. A 0.1 μF bypass capacitor to ground should be connected to this
pin.
The output of the LCD DAC. A 0.1 μF bypass capacitor to ground should be
connected to this pin.
Battery backup pin to support the battery modes (BRN, LCD). A battery or
super-capacitor is to be connected between VBAT and GNDD. If no battery
is used, connect VBAT to V3P3SYS.
RTC and oscillator power supply. A battery or super-capacitor is to be con-
nected between VBAT and GNDD. If no battery is used, connect
VBAT_RTC to V3P3SYS.
Analog Pins:
Table 4-7: 71M6543 Pin Description Table 2/3
Name
IAP/IAN,
IBP/IBN,
ICP/ICN
IDP/IDN
VA, VB,
VC
VREF
XIN
XOUT
Type
I
I
O
I
O
Description
Differential or single-ended Line Current Sense Inputs: These pins are voltage
inputs to the internal A/D converter. Typically, they are connected to the outputs
of current sensors. Unused pins must be tied to V3P3A .
Pins IBP/IBN, ICP/ICN, and IDP/IDN may be configured for communication with
the remote sensor interface (71M6x0x).
Line Voltage Sense Inputs: These pins are voltage inputs to the internal A/D
converter. Typically, they are connected to the outputs of resistor dividers. Un-
used pins must be tied to V3P3A.
Voltage Reference for the ADC. This pin should be left unconnected (floating).
Crystal Inputs: A 32 kHz crystal should be connected across these pins. Typical-
ly, a 15 pF capacitor is also connected from XIN to GNDA and a
10 pF capacitor is connected from XOUT to GNDA. It is important to minimize
the capacitance between these pins. See the crystal manufacturer datasheet for
details.
If an external clock is used, a 150 mV (p-p) clock signal should be applied to
XIN, and XOUT should be left unconnected.
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output
Page: 88 of 91
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