Schematic
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Title
Number RevisionSize
A3
Date: 2014-5-23 Sheet of
File: D:\
󲢅
\..\Romeo BLE V1.0.Sch Drawn By:
(RESET) PC6
29
PD0 (RXD)
30
PD1 (TXD)
31
PD2(INT0)
32
PD3 (INT1)
1
PD4 (XCK/T0)
2
VCC
6
GND
3
PB6 (X1/TOSC1)
7
PB7 (X2/TOSC2)
8
PD5 (T1)
9
PD6 (AIN0)
10
PD7 (AIN1)
11
PB0 (ICP)
12
PB1 (OC1A)
13
PB2 (SS/OC1B)
14
PB3 (MOSI/OC2)
15
PB4 (MISO)
16
PB5 (SCK)
17
AVCC
18
AREF
20
GND
21
(ADC0) PC0
23
(ADC1) PC1
24
(ADC2) PC2
25
(ADC3) PC3
26
(ADC4/SDA) PC4
27
(ADC5/SCL) PC5
28
ADC6
19
ADC7
22
VCC
4
GND
5
IC3
ATMEGA328P-AU
A0
A1
A2
A3
A4/SDA
A5/SCL
A6
A7
+5v
+5v
C2
104P
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
Y2
16MHZ
C6
15P
C7
15P
RESET
C1
104P
1 2
3 4
5 6
ICSP
+5v
D11/MOSI
D12/MISO
D13/SCK
RESET
AREF
+5v
+5v
D0/RX
D1/TXTX
RX
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4/SDA
A5/SCL
PWR
REDLED
L
GRLED
A4/SDA
A5/SCL
GND
+5V
GND
1
VCC
2
EN
3
RXD
4
TXD
5
AUX
6
SET
7
NC
8
NC
9
APC220
D0/RX
D1/TX
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
A0
A1
A2
A3
A4/SDA
A5/SCL
A6
A7
EVCC +5v
1
2
3
4
5
6
7
8
9
10
11
12
J1
EVCC
1
2
3
4
5
6
7
8
9
10
11
12
J2
EVCC
1
2
3
4
5
6
7
8
9
J3
EVCC
1
2
3
4
5
6
7
8
9
J4
1
2
3
4
5
6
7
8
9
10
11
12
J5
1
2
3
4
5
6
7
8
9
10
11
12
J6
+5v
R19
4.7K
R20
4.7K
R6
4.7K
R12
330
R18
1K
R13
620
1
2
3
4
5
6
7
8
J7
1
2
3
4
5
6
7
8
J8
1
2
3
4
5
6
J15
1
2
3
4
5
6
J16
1
2
3
4
5
6
7
8
J11
1
2
3
4
5
6
7
8
J12
RESET
1
2
J18
EVCC
3V3
VIN
R5
1K
4
1 2
3
RST
5x6
R1
100k
R2
100k
11
12
13
IC1D
74HC00
1
2
3
IC1A
74HC00
4
5
6
IC1B
74HC00
8
9
10
IC1C
74HC00
R3
100k
R4
100k
VCC +5v
1 2
3 4
5 6
7 8
J13
EVCC
GND
1
GND
10
GND
11
GND
20
OUT1
4
OUT2
5
OUT3
16
OUT4
17
INPUT1
7
ENA
8
INPUT2
9
INPUT3
13
ENB
14
INPUT4
15
VS
6
VSS
12
SENSEA
2
SENSEA
19
NC
3
NC
18
IC2
L298SO20
1
2
J14
+5vM_VIN
R14
1K
R15
3.3K
R11
2K
4
12
3
S1
5x6
4
12
3
S2
5x6
4
12
3
S3
5x6
4
12
3
S4
5x6
4
12
3
S5
5x6
+5v
A7
+5v
+5v
+5v
D4
D5
D6
D7
D0/RX
D1/TX
C14
104P
D2
SS14
D3
SS14
D4
SS14
D5
SS14
D6
SS14
D7
SS14
D8
SS14
D9
SS14
C15
104P
C16
104P
C18
104P
D10
SS14
C19
104P
RESET
1
2
3
4
J19
1
2
3
4
J20
1
2
3
4
J21
RoMeo BLE
1.0
1
2
J22
RX
TX
R21
1K
R30
1K
USB_GND
1
D+
2
D-
3
USB_VDD
4
P1_5
5
P1_4
6
P1_3
7
P1_2
8
P1_1
9
DVDD2
10
P1_0
11
P0_7
12
P0_6
13
P0_5
14
P0_4
15
P0_3
16
P0_2
17
P0_1
18
P0_0
19
RESET_N
20
AVDD5
21
XOSC_Q1
22
XOSC_Q2
23
AVDD3
24
RF_P
25
RF_N
26
AVDD2
27
AVDD1
28
AVDD4
29
RBIAS
30
AVDD6
31
P2_4/XOSC32K_Q1
32
P2_3/XOSC32K_Q2
33
P2_2
34
P2_1
35
P2_0
36
P1_7
37
P1_6
38
DVDD1
39
DCOUPL
40
IC4
CC2540
GND
Y3
32MHZ
C32 12pF
C33 12pF
GND
Y1
32.768KHZ
C20
15pF
C21
15pF
GND
R34 56K
GND
C22
1uF
GND
C26 18pF
C29 18pF
L3
2nH
C31
1pF
C27 1pF
L4 2nH
GND
GND
E1
Antenna
N_RESET
P05
+5V
1
GND
4
GND
6
UD+
3
UD-
2
GND
5
P1
USB
GND
USBVCC
D+
D+
D-
D-
R31
33
R33
33
C53
47PF
C54
47PF
GND
GND
GND
N_RESET
N_SCLK
L6
30R
FUSE
1 2
3 4
5 6
JP3
download
DC
DD
DDDC
C28 2.2pF
R27
1.5K
P1_0
P1_0
VCC3O
LINK
PAIR
R32 1K
R17 1K
C44
220pF
C45
104
C46
1UF
C47
104
C43
104
SET
SET
GND
BOOT
R23
10K
C38
104P
P05
R22
1.5K
3V3
3V3
3V3
3V3
R40
10K
3V3
RX
TX
RESET
Vin
3
ADJ
1
+Vout
2
IC7
ASM1117-33
C40
104P
C11
104P
C12
104P
RN2
10K
C4
100uF/TDK
RN1
10K
RN4
10K
C34
104P
T1
SI2301
C8
104P
C36
10nf
C3
22uF
IN
2
EN
7
SS
8
GND
4
GND
9
COMP
6
FB
5
SW
3
BS
1
IC6
MP2307
L1
10UH/3A
C35
104P
R35 100K
R36
6.8K
R37
10K1%
R38
44.2K1%
C37
3.9n
T2
SI2301
RN3
10K
+5
+5
+5
VIN
VIN
3
2
1
84
IC5A
LMV358
C5
104P
C39
22uF
USBVCC
3V3
5
6
7
IC5B
LMV358
3V3
C41
10UF
1
2
M_VIN
VIN
S7
SS-12F44
M_VIN
S6
C10
22UF
C17
22UF
C13
22UF
1
2
3
4
5
6
7
8
9
10
J10
CON10
1
2
3
4
5
6
7
8
9
10
J9
CON10
D8
D9
D10
D11/MOSI
D12/MISO
D13/SCK
AREF
A4/SDA
A5/SCL
+5v
C23
104P