PCAN-MicroMod Evaluation Kit
Test and Development Environment for
the PCAN-MicroMod
User Manual
PCAN-MicroMod Evaluation Kit
User Manual
Products taken into account
Product Name Item Number Model
PCAN-MicroMod Evaluation Kit
(incl. PCAN-Dongle)
IPEH-002081 Evaluation Board
Rev. 1.2
PCAN-MicroMod Evaluation Kit
(incl. PCAN-USB)
IPEH-002079 Evaluation Board
Rev. 1.2
The cover picture shows the MicroMod Evaluation Board with plugged on PCAN-
MicroMod. This is only a part of the scope of supply (see section 1.3).
Last Updates
October 27, 2005
Fully revised edition
February 28, 2006
Minor text changes
Windows® and MS-DOS are registered trademarks of Microsoft Corporation in the
United States and other countries.
All other product names mentioned herein may be the trademarks or registered
trademarks of their respective companies. Furthermore, "™" and "®" are not
mentioned in each case in this manual.
© 2006 PEAK-System Technik GmbH
PEAK-System Technik GmbH
Otto-Röhm-Straße 69
D-64293 Darmstadt, Germany
Phone: +49 (0)6151-8173-20
Fax: +49 (0)6151-8173-29
www.peak-system.com
info@peak-system.com
2
PCAN-MicroMod Evaluation Kit
User Manual
Contents
1 Introduction 4
1.1 Properties at a Glance 4
1.2 Special Prerequisites for the Operation 5
1.3 Scope of Supply 5
2 Startup of the Evaluation Kit 6
3 Components of the Evaluation Board 7
3.1 MicroMod (Mounting) 7
3.2 Digital Inputs 7
3.3 Digital Outputs 8
3.4 Frequency Inputs 8
3.5 Frequency Outputs 9
3.6 Analog Inputs 9
3.7 Prototyping Areas 9
3.8 CAN 10
3.9 RS-232 11
3.10 Power Supply 11
4 Frequently Asked Questions (FAQ) 12
5 Technical Specifications 13
Appendix A Layout of the Evaluation Board 14
Appendix B Circuit Diagram of the Evaluation Board 16
3
PCAN-MicroMod Evaluation Kit
User Manual
1 Introduction
The PCAN-MicroMod Evaluation Kit makes it easy connecting
hardware to the MicroMod and configuring it with your computer.
The various I/O units on the Evaluation Board facilitate the
development and the evaluation of the module's configuration
functionality.
Note: This manual only refers to the Evaluation Kit itself. Sepa-
rate hardware and software documentation is available for the
PCAN-MicroMod and the supplied PC/CAN adapter (PCAN-
Dongle or PCAN-USB).
1.1 Properties at a Glance
Terminal strips and test pins for inputs and outputs
Open collector drivers for the digital and the CMOS PWM
outputs
Protected digital outputs
Low-pass for digital inputs
LEDs for digital inputs and outputs
Switches for status modification of the digital inputs
Potentiometers for analog inputs
Resistive dividers for voltages > 5 V
Serial port for flash updates
Optional insertion of a Low-speed CAN transceiver as alternative
to the High-speed CAN transceiver on the MicroMod
4
PCAN-MicroMod Evaluation Kit
User Manual
1.2 Special Prerequisites for the
Operation
For operating the Evaluation Board no special prerequisites are
necessary. Please also observe the according notes in the other user
manuals (PCAN-MicroMod, PCAN-Dongle / PCAN-USB).
1.3 Scope of Supply
The scope of supply normally consists of the following parts:
MicroMod Evaluation Board
PCAN-MicroMod
Wall power supply
CAN cable (2 m/7 ft.) incl. termination for HS-CAN on both sides
(IPEH-003001)
PCAN-Dongle (kit IPEH-002019) or PCAN-USB (kit IPEH-002021)
5
PCAN-MicroMod Evaluation Kit
User Manual
2 Startup of the Evaluation
Kit
This chapter gives a quick overview of the needed steps for the
straightforward startup of the Evaluation Kit. Please pay heed to the
documentation for the single components, too.
Do the following for the startup:
1. Connect the PCAN-Dongle or the PCAN-USB adapter to the
switched off PC.
2. If not already done, plug the MicroMod onto the Evaluation
Board (see section 3.1).
3. Connect the PCAN-Adapter at the PC and the Evaluation
Board using the CAN cable.
4. Connect the wall power supply and the Evaluation Board.
5. Switch on the PC and install the needed driver software
under Windows (EXE file on diskette or CD-ROM with the
name of the used PCAN adapter).
6. Setup the MicroMod Configuration Tool under Windows
(file Setup.exe on diskette or CD-ROM).
7. Start the MicroMod Configuration Tool, create a
configuration and finally send this configuration to the
MicroMod (see help for the program).
8. You can now work with signals at the I/O ports as defined in
the configuration. Please consider the explanations in the
following chapter.
6
PCAN-MicroMod Evaluation Kit
User Manual
3 Components of the
Evaluation Board
This chapter describes the primary function units and connectors of
the Evaluation Board. For details you can also refer to the circuit
diagram in Appendix B.
3.1 MicroMod (Mounting)
When you mount the MicroMod, take notice of the white triangular
marks on each the Evaluation Board and the MicroMod (upper left
corner). These marks must align. Another help may be the
orientation of the labels. With mounted MicroMod the labels have
the same orientation on both PCBs (not
upside down).
3.2 Digital Inputs
The Evaluation Board has 8 digital inputs with TTL levels. The
corresponding connector is J3 (screw terminal on the lower left).
Each input has a pull-up resistor (10 kΩ) and is low-active, so the
inputs are switched against GND. Each input status is indicated by
an LED. For test purposes the input signal can be switched with the
dip switch S1. The corresponding switches are labeled "Din0" to
"Din7". The inputs have a low-pass filter with 100 kΩ/100 nF.
Signals leading directly to the MicroMod can be picked off at the
measuring points on strip J20, positions 6 to 13 (position 1 is the
upper one).
7
PCAN-MicroMod Evaluation Kit
User Manual
3.3 Digital Outputs
The Evaluation Board has 8 digital outputs. The corresponding
connector is J1 (screw terminal on the upper left). The outputs are
low-active and can drive up to 350 mA. The LEDs LD1 to LD8
indicate each status of the outputs. A lighting LED means that the
output is active and is switched against mass.
With solder bridges on positions JP1 to JP8 a pull-up resistor
(3.3 kΩ) can be engaged for each output (default: open). With this
modification you gain TTL compatible output signals.
With a solder bridge on position JP10 the outputs 0 to 3 and on
position JP9 the outputs 4 to 7 can be inverted by hardware
(default: open).
3.4 Frequency Inputs
The Evaluation Board has 4 frequency inputs. The corresponding
connector is J2 (Fin0 to Fin3, screw terminal on the mid left). The
MicroMod can meter frequencies from 1 Hz to 10 kHz.
With solder bridges on positions JP13 to JP16 low-pass filters
consisting of 100 kΩ/100 nF can be engaged for each input path.
Frequency Input Solder bridge for low-pass on position
Fin0 JP16
Fin1 JP15
Fin2 JP14
Fin3 JP13
8
PCAN-MicroMod Evaluation Kit
User Manual
3.5 Frequency Outputs
The MicroMod can generate frequency signals and PWM signals.
The corresponding connector on the Evaluation Board is J2 (Fo1 to
Fo3, screw terminal on the mid left). The output signal is protected
against short circuit with a series resistance of 82 Ω.
With a solder bridge on position JP11 the output signal can be
inverted by hardware (default: open).
3.6 Analog Inputs
The Evaluation Board has 8 analog inputs. The corresponding
connector is J4 (screw terminal on the upper right). The analog
reference voltage is 5 V. The input impedance is 6.5 kΩ (3.2 kΩ
analog input microcontroller, 3.3 kΩ series impedance in front of the
microcontroller input).
The Evaluation Board has 4 potentiometers (P0 to P3) which can be
used for simulating input signals. With solder bridges on positions
JP17 to JP20 the potentiometers are connected to Ain0 to Ain3
(default: closed).
For external sensors the screw terminal has the positions AGND
and AVCC.
3.7 Prototyping Areas
The Evaluation Board has prototyping areas with 50-mil and 100-mil
grids. Small circuits can be added here to the inputs and outputs.
9
PCAN-MicroMod Evaluation Kit
User Manual
3.8 CAN
The pin assignment of the CAN connector corresponds to the CiA
recommendation DS 102-1.
With solder bridges on the positions JP22 and JP25 on the bottom
side of the Evaluation Board the ground can be connected to the
connector shield.
On the Evaluation Board the High-speed CAN bus can be
terminated with 2 x 60 Ω by closing the solder bridges on positions
JP23 and JP24 (both solder bridges must be closed, default: open).
With solder bridges on position JP32 (default: open) a 5-Volt supply
can be routed either to pin 1, pin 9, or to both pins of the CAN
connector. This way devices with a low power consumption
(external transceivers or optocouplers for example) can be directly
supplied via the CAN connector.
5-Volt supply →
None Pin 1 Pin 9 Pin 1 + Pin 9
Solder bridge(s) on JP32 none 2-3 1-2 1-2-3
A Low-speed CAN transceiver TJA 1054 can be alternatively
equipped on the Evaluation Board. Additionally following actions
are necessary for according operation:
The solder bridges on positions JP28 and JP29 must be set over
from HS (High-speed) to LS (Low-speed).
The 0-Ohm resistor on the MicroMod (above the CAN
transceiver, on the lower right side of the label “4”) must be
unsoldered.
The Low-speed CAN bus is terminated with 5.6 kΩ. For lower
termination resistance additional resistors can be equipped on
positions R2 and R3.
The error condition of the Low-speed CAN transceiver is indicated
by the LED LD26.
10
PCAN-MicroMod Evaluation Kit
User Manual
The equipped Low-speed CAN transceiver may be deactivated later
on by setting a solder bridge on position JP21.
3.9 RS-232
The Evaluation Board has a serial port corresponding to the RS-232
standard with the signals TxD, RxD and GND. This port is used for
uploading a firmware to the MicroMod. The connection to the PC is
done with a serial extension cable (1:1). You can find information
about a firmware upload in the user manual for the PCAN-
MicroMod.
3.10 Power Supply
The Evaluation Board gets a DC voltage of 9 V from the included
wall supply via connector J11 (upper left). The voltage regulator on
the board provides the necessary supply for the MicroMod (JP31
shortened on position 1-2, default).
The LED LD25 indicates that the Evaluation Board is supplied.
At higher input voltages and higher environment temperatures at
the same time (e.g. 12 V, above room temperature) an alternative
voltage regulator 7805 with heat sink can be installed on position
J19. Optionally the use of an integrated switch regulator (e.g.
PT5101, PT78HT205, PT78ST105, each by Texas Instruments) is
possible. For example, this is reasonable in an environment with
raised input voltage (e.g. 24 V). In all cases each JP30 and JP31
must be shortened in position 2-3 (positions 1-2 stay open).
11
PCAN-MicroMod Evaluation Kit
User Manual
4 Frequently Asked Questions
(FAQ)
Question Answer
The circuit diagram for
the PCAN-MicroMod is
missing in the appen-
dix.
Sorry, but this isn't published by us. You
can find information about the assign-
ment and functions of the connection
pins in the user manual for the PCAN-
MicroMod.
The MicroMod doesn’t
start.
Apart from the necessary power supply
the MicroMod must be set up for normal
operation mode (Run mode). This is
done with the jumper S5 on the Evalu-
ation Board (position „Run=1-2“).
12
PCAN-MicroMod Evaluation Kit
User Manual
5 Technical Specifications
MicroMod Evaluation Board
Supply voltage 6.4 – 12 V DC (with existing voltage regulator), for
higher input voltages the use of an alternative
voltage regulator or an integrated switch regulator
is possible
Size of circuit board 100 x 102 mm (3 15/16 x 4 inches)
Digital inputs 8, TTL, low-active, input low-pass with
100 kΩ/100 nF
Digital outputs 8, TTL, low-active, max. 350 mA
Frequency inputs 4, TTL
Frequency outputs 4
Analog inputs
8, 0 – 5 V, input impedance 6.5 kΩ (combined
impedance of Evaluation Board and MicroMod)
CAN
HS-CAN termination (120 Ω) can be engaged,
LS-CAN transceiver can be equipped alternatively
Design and specifications are subject to change without notice.
13
PCAN-MicroMod Evaluation Kit
User Manual
Appendix A Layout of the
Evaluation Board
Top Side
14
PCAN-MicroMod Evaluation Kit
User Manual
Bottom Side
15
PCAN-MicroMod Evaluation Kit
User Manual
16
Appendix B Circuit Diagram of
the Evaluation
Board
See following pages:
MicroMod Evaluation Board – Main, Page 1/2 (DIN A3)
MicroMod Evaluation Board – Power, Page 2/2 (DIN A4)
1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
Title:
MicroMod Evaluation Board
Date:
Sheet:
Page
7-Oct-2005
Revision: 1.2
Otto-Röhm-Straße 68
D-64293 Darmstadt
Main
PEAK-System Technik GmbH
1of2
Germany
AI1
A1
AI0
A2
AI3
A3
AI2
A4
AI5
A5
AI4
A6
AI7
A7
AI6
A8
CAN-H
A15
CAN-L
A16
TxD
A17
RxD
A18
SCL
A19
SDA
A20
VREF
A9
INT
A22
M0
A23
M2
A24
DO7
B1
DO6
B2
DO5
B3
DO4
B4
DO3
B5
DO2
B6
DO1
B7
DO0
B8
FO3
B9
FO2
B10
FO1
B11
FO0
B12
FI3
B15
FI2
B16
FI1
B17
FI0
B18
DI7
B19
DI6
B20
DI5
B21
DI4
B22
DI3
B23
DI2
B24
DI1
B25
DI0
B26
VCC
B14
GND
B13
AGND
A12
GND
A11
AVCC
A10
CAN TxD
A13
CAN RxD
A14
RESET
A21
(J1)(J2)
VCC
A25
GND
A26
PCAN MicroMod
PCAN_PICO1
R1 IN
13
R2 IN
8
T1 IN
11
T2 IN
10
V+
2
V-
6
R1 OUT
12
R2 OUT
9
T1 OUT
14
T2 OUT
7
C1+
1
C1 -
3
C2+
4
C2 -
5
U6
MAX232ESE(16)
TxD
2
RxD
3
ERR
4
STB
5
EN
6
WAKE
7
RTH
8
RTL
9
VCC
10
CANH
11
CANL
12
GND
13
BAT
14
INH
1
U5
TJA1054
I1
1
I2
13
I3
3
O1
2
I4
11
I5
5
I6
9
O2
12
O3
4
O4
10
O5
6
O6
8
U3
74ACT14
I1
1
I2
13
I3
3
O1
2
I4
11
I5
5
I6
9
O2
12
O3
4
O4
10
O5
6
O6
8
U4
74ACT14
In1
1
In2
2
Out2
3
Out1
4
L3
B82790-S513-N201
+DCin +5V
GND
Netzteil
Power5V.sch
VCC
GND
C31
100nF
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C18
100nF
GND VCC
C19 100nF
GND VCC
C16
100nF
GNDVCC
C17
100nF
GNDVCC
C28
100nF
GNDVCC
R4
5K6/1%
VCC
VCC
Male
Female
C39
1uF/16V
C40
1uF/16V
C42
1uF/16V
C43
1uF/16V
VCC
1
2
3
45
6
7
8
RN10
100Kx4
1
2
3
45
6
7
8
RN11
100Kx4
1
2
3
45
6
7
8
RN12
100Kx4
C4
100nF
C27
100nF
C26
100nF
C25
100nF
C24
100nF
C23
100nF
C22
100nF
C21
100nF
C20
100nF
C15
100nF
C14
100nF
C13
100nF
C12
100nF
C11
100nF
C10
100nF
C9
100nF
C8
100nF
C7
100nF
C6
100nF
C5
100nF
1
2
3
45
6
7
8
RN17
1K5x4
1
2
3
45
6
7
8
RN18
1K5x4
1
2
3
45
6
7
8
RN16
1K5x4
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
9
10
11
12
16
15
14
13
S1
SW DIP-12
1
2
3
4
5
6
7
8
9
10
J1
CON10
1
2
3
4
5
6
7
8
9
10
J3
CON10
VCC
1
2
3
4
5
6
7
8
9
10
J4
CON10
VCC
GND
SDA
SCL
INT
Wrapfeld Wrap.sch
VCC
VCC
GND
C41
4,7uF
GNDVCC
S5
SW-SPDT/A
JP20
JP17
JP18
JP19
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J14
HEADER 16
GND
GND
GND
GND
GND
GND
VCC
VCC
1
2
3
4
5
6
7
8
9
10
J2
CON10
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
J12
HEADER 15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
J13
HEADER 15
1
2
3
4
5
6
7
8
9
10
J16
HEADER 10
JP1
JP2
JP3
JP4
JP5
JP6
JP7
JP8
VCC
1
2
3
4
5
J15
HEADER 5
VCC
C3
100nF
GND
VCC
R1
470R
VCC
FI0
FI1
FI2
FI3
FI0
FI1
FI2
FI3
FI0
FI1
FI2
FI3
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI0
DI1
DI2
DI3
DI4
DI5
DI6
DI7
FC0
FC1
FC2
FC3
FC0
FC1
FC2
FC3
FC0
FC1
FC2
FC3
DC0
DC1
DC2
DC3
DC4
DC5
DC6
DC7
DC0
DC1
DC2
DC3
DC4
DC5
DC6
DC7
DS0
DS1
DS2
DS3
DS4
DS5
DS6
DS7
DS0
DS1
DS2
DS3
DS4
DS5
DS6
DS7
DS0
DS1
DS2
DS3
DS4
DS5
DS6
DS7
FS0
FS1
FS2
FS3
FS0
FS1
FS2
FS3
FS0
FS1
FS2
FS3
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
DIN0
DIN1
DIN2
DIN3
DIN4
DIN5
DIN6
DIN7
FIN0
FIN1
FIN2
FIN3
FIN0
FIN1
FIN2
FIN3
FIN0
FIN1
FIN2
FIN3
FIN0
FIN1
FIN2
FIN3
DC0
DC1
DC2
DC3
DC4
DC5
DC6
DC7
FOC0
FOC1
FOC2
FOC3
FOC0
FOC1
FOC2
FOC3
FOC0
FOC1
FOC2
FOC3
DOC0
DOC1
DOC2
DOC3
DOC4
DOC5
DOC6
DOC7
DOC0
DOC1
DOC2
DOC3
DOC4
DOC5
DOC6
DOC7
DOC0
DOC1
DOC2
DOC3
DOC4
DOC5
DOC6
DOC7
DOC0
DOC1
DOC2
DOC3
DOC4
DOC5
DOC6
DOC7
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
FO0
FO1
FO2
FO3
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
FO0
FO1
FO2
FO3
FO0
FO1
FO2
FO3
FO0
FO1
FO2
FO3
AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI0
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI1
AI2
AI3
AI4
AI5
AI6
AI7
AI0
AI1
AI2
AI3
AI0
GND
1
J5
CON1
1
6
2
7
3
8
4
9
5
10
0
J17
SUB-D9M
1
6
2
7
3
8
4
9
5
10
0
J18
SUB-D9F
JP27
GND
GND
3
2
1
J11
POWER JACK 2mm
LD26
LED 3 Red
P3
1K lin
P0
1K lin
P1
1K lin
P2
1K lin
+
C45
560uF/6,3V
C38
4,7uF
C36
4,7uF
GND
VCC
JP13
JP14
JP15
JP16
C1
100nF
C37
4,7uF
L1
10uH/25mA
L2
10uH/25mA
S3
SHORT
AVCC
AVCC
AVCC
AGND
AGND
AGND
AGND
GND
C30
100nF
S4
SW-PB
GND
AGND
AGND GND
VREF
VREF
AVCC
AVCC
H
L
JP32
VCC
GND
JP29
JP28
R7
62R/1%
R6
10K
JP24
JP21
R2
560R 1%
JP23
C32
10nF
R3
560R 1%
R5
5K6/1%
R8
62R/1%
JP26
GND
JP25
GND
JP22
GND
LD9
LED
LD10
LED
LD11
LED
LD12
LED
LD13
LED
LD14
LED
LD15
LED
LD16
LED
LD17
LED
LD18
LED
LD19
LED
LD20
LED
LD21
LED
LD22
LED
LD23
LED
LD24
LED
LD1
LED
LD2
LED
LD3
LED
LD4
LED
LD5
LED
LD6
LED
LD7
LED
LD8
LED
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J20
HEADER16
FI0
FI1
FI2
DI6
DI7
DI0
DI1
DI2
DI3
DI4
DI5
FI3
C49
100nF
GNDVCC
VCC
GND
AVCC
AGNDIN1
1
IN2
2
FAULT
3
GND
4
GND
5
GND
6
GND
7
VS
8
IN3
9
IN4
10
ENA
11
OUT4
12
OUT3
13
GND
14
GND
15
GND
16
GND
17
OUT2
18
OUT1
19
PRG
20
U1
TLE6225G
IN1
1
IN2
2
FAULT
3
GND
4
GND
5
GND
6
GND
7
VS
8
IN3
9
IN4
10
ENA
11
OUT4
12
OUT3
13
GND
14
GND
15
GND
16
GND
17
OUT2
18
OUT1
19
PRG
20
U2
TLE6225G
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC
VCC
JP9
JP10
VCC
I1a
1
I1b
2
I2a
4
O1
3
I2b
5
I3a
9
I3b
10
O2
6
O3
8
O4
11
I4a
12
I4b
13
U8
74AC86M
C29
100nF
GND
VCC
JP11
VCC
R10
82R 0,25W
R11
82R 0,25W
R12
82R 0,25W
R13
82R 0,25W
*
*
*
*
Invert Output Polarity
R14
10K
VCC
VCC
VCC
R15 1k5
R16 1k5
R17 1k5
R18 1k5
R19 1k5
R20 1k5
R21 1k5
R22 1k5
R23 1k5
R24 1k5
R25 1k5
R26 1k5
R27 10k
R28 10k
R29 10k
R30 10k
R31 10k
R32 10k
R33 10k
R34 10k
R35 10k
R36 10k
R37 10k
R38 10k
R39 10k
R40 10k
R41 10k
R42 10k
R43 10k
R44 10k
R45 10k
R46 10k
R47 10k
R48 10k
R49 10k
R50 10k
R51 3k3
R52 3k3
R53 3k3
R54 3k3
R55 3k3
R56 3k3
R57 3k3
R58 3k3
R59 3k3
R60 3k3
R61 3k3
R62 3k3
R63 3k3
R64 3k3
R65 3k3
R66 3k3
R67 3k3
R68 3k3
R69 3k3
R70 3k3
R71 0R
R72 0R
R74
4k7
R73
4k7
VCC
1 2 34
A
B
C
D
4
321
D
C
B
A
Title:
MicoMod Evaluation Board
Date:
Sheet:
Page
7-Oct-2005
Revision: 1.2
Otto-Röhm-Straße 68
D-64293 Darmstadt
Power
PEAK-System Technik GmbH
2of2
Germany
+DCin
+
C47
15uF/16V
+5V
GND
GND
GND
1
Vin
3
Vout
2
U7
LM1117_TO-252
JP31
JP30
D3
MBR0540T1
C34
100nF
C35
100nF
+
C48
22uF/10V
1
2
3
J19
CON3
C44
1uF/16V
GND
GND
C33
100nF
GND
+
C46
82uF/35V
Optional
LD25
LED 3 Red
R9
470R
/
