Microchip Technology AC164133 Data Sheet
Hardware Overview
© 2008 Microchip Technology Inc.
DS70336A-page 15
2.2.3
16-bit 28-pin Starter Development Board Connector J2
The two converter stage sections of the Daughter Board can be controlled using the
16-bit 28-pin Starter Development Board. Table 2-1 lists all of the power and signal
connections on the Daughter Board J2 connector to the user interface with the 16-bit
28-pin Starter Development Board. See Figure A-6 for the location of this connector.
16-bit 28-pin Starter Development Board. Table 2-1 lists all of the power and signal
connections on the Daughter Board J2 connector to the user interface with the 16-bit
28-pin Starter Development Board. See Figure A-6 for the location of this connector.
TABLE 2-1:
SIGNAL AND POWER CONNECTION FOR 16-BIT 28-PIN
STARTER DEVELOPMENT BOARD (J2)
STARTER DEVELOPMENT BOARD (J2)
Pin Number
Primary
Assignment
Primary Use
1
NC
Not Connected
2
AN0
Analog Input 0 (Buck Converter 1 current)
3
AN1
Analog Input 1 (Buck Converter 1 voltage)
4
AN2
Analog Input 2 (Buck Converter 2 current)
5
AN3
Analog Input 3 (Buck Converter 2 voltage)
6
AN4
Analog Input 4 (Input Voltage)
7
NC
Not Connected
8
V
SS
Ground reference for logic and I/O pins
9
NC
Not Connected
10
NC
Not Connected
11
NC
Not Connected
12
NC
Not Connected
13
V
DD
Positive supply for logic and I/O pins
14
NC
Not Connected
15
RB15
PMBUSAUX2
16
RB5
PMBUSAUX1
17
SCL
SCL/TX
18
SDA
SCL/RX
19
V
SS
Ground reference for logic and I/O pins
20
V
DD
+3.3V_DIG
21
PWM3H
PWM Boost Converter
22
I/O
Load
23
PWM2H
PWM 2 High Output (Buck Converter 2)
24
PWM2L
PWM 2 Low Output (Buck Converter 2)
25
PWM1H
PWM 1 High Output (Buck Converter 1)
26
PWM1L
PWM 1 Low Output (Buck Converter 1)
27
NC
Not Connected
28
+9V
Input Voltage for two buck stages