+
3
V
3
+5V
GND
0.1uF
2.2uF
0.1uF
GND
3
3
0
GND
1
0
0
k
4
.8
7
k
1
%
GND
GND
0.1uF
1.0uF
2.2uF
0.1uF
0.1uF
0.1uF
0.1uF
GND
0
0
GND
1M
S
W
IT
C
H
_
T
A
C
T
IL
E
12pF
12pF
1
0
k
0.1uF
12pF
12pF
SWITCH_TACTILE
GND
MOUNT-HOLE3.2
MOUNT-HOLE3.2
GND
GND
GND
GND
GND
TPS2052B_DRB_8
+5V
1
0
k
100k
GND
51
0.1uF
GND
+
3
V
3
1
0
0
k
TPS73733_DRV_6
O
M
IT
2k
MOUNT-HOLE3.2
100
CRYATL_32K_SMD
C19
C20
C21
D
0
R
9
R
1
7
TP3
R
2
5
C4
C14
C15
C40
C41
C42
C43
TP9
TP10
TP11
TP12
R39
TP13
R41
R42
R
E
S
E
T
C44
C45
N
C
2
P
$
2
N
C
4
P
$
4
O
S
C
0
P
$
1
O
S
C
1
P
$
3
R
4
4
C46
C47
C48
WAKE
H4
H6
*EN1
3
*EN2
4
*OC1
8
*OC2
5
EPAD
9
GND
1
IN
2
OUT1
7
OUT2
6
V
IA
V
V
IA
V
_
2
V
IA
V
_
3
V
IA
V
_
4
V
IA
V
_
5
V
IA
V
_
6
U4
JP1
1
2
3
4
5
6
JP2
1
2
JP
3
1
2
R
3
5
R36
TP8
R38
C3
R
2
6
EN
4
EPAD
7
GND
3
IN
6
NC
5
NR/FB
2
OUT
1
V
IA
V
V
IA
V
_
2
U5
R
4
8
R49
H1
R51
HIB
P$65
RESET
P$70
WAKE
P$64
EN0RXIN
P$53
EN0RXIP
P$54
EN0TXON
P$56
EN0TXOP
P$57
GND
P$17
GND
P$48
GND
P$55
GND
P$58
GND
P$80
GND
P$114
GNDA
P$10
OSC0
P$88
OSC1
P$89
RBIAS
P$59
VBAT
P$68
VDD
P$7
VDD
P$16
VDD
P$26
VDD
P$28
VDD
P$39
VDD
P$47
VDD
P$51
VDD
P$52
VDD
P$69
VDD
P$79
VDD
P$90
VDD
P$101
VDD
P$113
VDD
P$122
VDDA
P$8
VDDC
P$87
VDDC
P$115
VREFA+
P$9
XOSC0
P$66
XOSC1
P$67
P$1
P$1
P$2
P$2
Y3
TARGET_VBUS/3.2C
TARGET_VBUS/3.2C
DEBUG_VBUS/6.4A
EN0RXI_N
EN0RXI_P
EN0TXO_N
EN0TXO_P
RBIAS
WAKE/3.3D
MCU_3V3/6.2A
MCU_3V3/4.1A
VBUS
VBUS
VBUS
PQ4/3.4D
PD6/3.2B
TARGET_RESET/3.2D
A
B
C
D
E
A
B
C
D
E
1
2
3
4
5
6
Y
1
2
5
M
h
z
U1G$2
Power Control Jumper:
1) To power from Debug install jumper on pins 5 - 6
2) To power from Target USB install jumper on pins 3 - 4
3) To power from BoosterPack 5V install jumper on pins 1 - 2
This is also the off position if BoosterPack does not
supply power
When powered from BoosterPack TPS2052B does not
provide current limit protection.
When powered by BoosterPack, USB host mode does not
supply power to connected devices
Primary 3.3V regulator
Disconnect JP3 to power device from 3V3 BoosterPack
JP2 can be used to measure MCU current
consumption with a multi-meter.
TPS2052B provides current limit for main 5V power.
Also provides power switching for USB host/OTG modes
For Host/OTG:
PD6 configured as USB0EPEN peripheral function.
PQ4 configure as individual pin interrupt. Indicates
power fault on the USB bus. USB0PFLT peipheral pin
not available due to pin mux and use on BoosterPacks.
USB Host mode does not supply power to devices
when powered from a BoosterPack
For Applications that do not use USB:
Configure PD6 as input with internal pull-down
enabled. Turns off power to TARGET_VBUS
R38 and C3 Used to meet
VBAT rise time requirements
R41 may be removed and precision
reference applied to TP13
