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RE46C190
DEMO BOARD
USER ’S GUIDE
Chapter 2. Installation and Operation
2.1
INTRODUCTION
The RE46C190 Demo Board allows full evaluation of the RE46C190 functionality,
including programmability. The demo board consists of two parts:
? RE46C190 application circuit (see Figure 2-1)
? A smoke-chamber emulation circuit (see Figure 2.2).
The smoke-chamber emulation circuit can be disconnected from the RE46C190
application circuit so the actual photo smoke chamber components can be evaluated
in the RE46C190 application circuit. The board can be operated from a CR123A
battery, or be powered from a 3V power supply.
V BAT
VBATc
R15 0?
R2
100?
V DD
D4
3V
C6
10 μF
C3
1 μF
L1
GND2
SW2
GND
10 μH
IRCAPc
IREDc R17 0?
R18 0?
IRED
SW1
IC1
LX
D3
V BST
C2
LX
V SS
V BST
IRED
HS
V DD
TEST
IRCAP
IRP
FEED
IRN
RLED GLED
RLEDR
IRPc
IRNc R19 0?
R20 0?
RED
D1
GLEDR
C4
100 μF
TEST
TEST2
1
2
3
4
5 TEST2 IO
6
7
8
HB
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
C1
1 nF
HB
R3
330?
HS
IO
HORN
FEED
4.7 μF
GND
FIGURE 2-1:
RLED
RE46C190 Application Circuit.
RE46C190
IRCAP
GLED
C5
33 μF
? 2011 Microchip Technology Inc.
DS51970A-page 11
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