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71M6533- DB Demo Board User’s Manual
3
3
3.1
HARDWARE DESCRIPTION
71M6533-DB DEMO BOARD DESCRIPTION: JUMPERS, SWITCHES
AND TEST POINTS
The items described in the following tables refer to the flags in Figure 3-1.
Item #
1, 2, 6
4
Reference
Designator
TP2, TP4, TP6
JP1
Name
VA, VB, VC
PS_SEL[0]
Use
Two-pin header test points. One pin is the VA, VB, or VC
line voltage input to the IC and the other end is V3P3.
A jumper is placed across JP1 to activate the internal
power supply. JP1 is on the bottom of the board.
Caution: High Voltage! Do not touch!
VA_IN, VB_IN,
VC_IN
VA_IN, VB_IN, and VC_IN are the line voltage inputs to the
board. Each input has a resistor divider that leads to the
3, 8, 11
J4, J6, J8
pin on the IC associated with the voltage input to the ADC.
These inputs are spade terminals mounted on the bottom
of the board.
Caution: High Voltage! Do not touch these pins!
5
J9
NEUTRAL
The NEUTRAL voltage input connected to V3P3. This input
is a spade terminal mounted on the bottom of the board.
Chip reset switch: When the switch is pressed, the RESET
7
SW2
RESET
pin of the IC is pulled high which resets the IC into a known
state.
Three-pin header that allows selection of power to the
VBAT pin. When the jumper is placed between pins 1 and
9
JP8
VBAT, GND
2 (default setting of demo board) VBAT is tied to the IC
supply. An external battery can be connected between
terminals 2 and 3.
Pushbutton connected to the PB pin on the IC. This push-
button can be used in conjunction with the Demo Code to
10
SW3
PB
wake the IC from sleep mode or LCD mode to brown-out
mode. In mission mode, the pushbutton serves to cycle the
LCD display.
Table 3-1: 71M6533-DB Demo Board Description
Page: 55 of 75
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