7 - 1
SECTION 7
.
VOLTAGE
DIAGRAM
• MAIN UNIT
V
0
.
5
V
3
.
3
IC1
UPD4721GS-A
1
VDD
2
CI+
3
VCC
4
CI-
5
C5+
6
C5-
7
DIN1
8
DIN2
9
ROUT1
10
ROUT2
11
RIN2
12
RIN1
13
DOUT2
14
DOUT1
15
VCHA
16
STBY
17
VSS
18
C4-
19
GND
20
C4+
IC2
BA033FP
I
O
G
C8
100
C10
100
R1
10
R2
10
R3
10K
R4
10K
C13
100P
C14
100P
D5
NNCD5.6C-A
C15
0.01
C9
0.01
C11
0.01
C3
0.01
C17
0.01
C16
0.01
R5
220
R6
220
R7
220
R8
220
R9
4.7K
EP2
MMZ1608Y102BT
C19
0.01
C20
0.001
1
2
J2
3
4
5
6
7
8
9
C2
22
C18
22
FI1
TDFM2A-1575A-10A
I O
EP3
#DAKC1575MS74T
IC3
ITRAX03-S-1
1
TCAP1
2
BOOT1
3
SPI1XCS0
4
SPI1SDO
5
GND
6
SPI1SDI
7
SPI1CLK
8
GND
9
XRESET
10
BOOT2
11
GND
12
SPI1XCS2
13
MMCCMD
14
VDDRF
17
TXD0
18
RXD0
19
RXD1
20
GND
21
MMCCLK
22
GND
23
GND
24
RFIN
25
GND
26
GND
27
MMCDAT
28
VDDDIG
29
PM0
30
PPS
15
GND
16
TXD1
D2
DZ2J100M
D4
DZ2J100M
D3
DZ2J100M
D1
DZ2J100M
CP1
C7
4.7
C6
4.7
C5
4.7
C1
4.7
C4
4.7
GPSTXD
GSPRXD
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
GPS5V
GPS5V
GPSGND
GND
GND-G5
GND-D7