Datasheet
1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
Title
Number RevisionSize
B
Date: 2/3/2010 Sheet of
File: C:\Documents and Settings\..\LMH0303USB.SCHDOCDrawn By:
GND
PE6
1
PE7
2
UVCC
3
Dm
4
Dp
5
UGnd
6
UCap
7
VBUS
8
PE3
9
PB0
10
MCK_PB1
11
MOSI_PB2
12
MISO_PB3
13
PB4
14
PB5
15
PB6
16
PB7
17
INT4_PE4
18
INT5_PE5
19
RESETz
20
VCC
21
GND
22
XTAL2
23
XTAL1
24
SCL_PD0
25
SDA_PD1
26
INT2_PD2
27
INT3_PD3
28
PD4
29
PD5
30
PD6
31
PD7
32
PE0
33
PE1
34
PC0
35
PC1
36
PC2
37
PC3
38
PC4
39
PC5
40
PC6
41
PC7
42
HWBz
43
PA7
44
PA6
45
PA5
46
PA4
47
PA3
48
PA2
49
PA1
50
PA0
51
VCC
52
GND
53
PF7
54
PF6
55
PF5
56
PF4
57
PF3
58
PF2
59
PF1
60
PF0
61
AREF
62
GND
63
AVCC
64
DAP
65
U1
AT90USB1287
VBUS
1
Dm
2
Dp
3
ID
4
GND
5
SHLD
6
J7
MINI_USB_B
Vout
1
Vin
2
NC1
3
Sense
4
GND
5
Bypass
6
Ven
7
NC2
8
U2
LP3981
Q1
IRLML6401PbF
VCC
DVCC
GND GND
GND
X1
8MHz
SD/HDbar
SDA
SCL
RSTObar
RSTIbar
ENABLE
FAULT
RCDLED
GCDLED
RTF0PLED
GTF0PLED
GTF0NLED
RTF0NLED
GTF1PLED
RTF1PLED
GTF1NLED
RTF1NLED
1
1
GND
3
2
2
S1
TACTSW
GND
DVCC
GND
DVCC
GND GND
DVCC
DVCC
GND
GND
GND
GND
GND
GND
DVCC
DVCC
GNDGNDGNDGNDGNDGND
GND
D
6
GND
5
C
4
A
1
GND
2
B
3
D13
CEBS0624V-G
GND GND
SAVE RESETbar ENABLE_SW SD/HDbar_SW MODE_SW RSTI_SW
DVCC DVCC DVCC DVCC DVCC DVCC
GNDGNDGNDGNDGNDGND
USB Power
Enable
SD/HDbar
MODE
RSTObar
RSTIbar
A1
1
A2
2
K2
3
A3
4
A4
5
K1
6
D14
BAS40DW05
7
5
9
11
8
10
12
3
1 2
4
6
1413
JP2
HEADER 7X2
GND
DVCC
GND
GND
1
FD0
1
FD1
1
FD2
R38
300
R26
22
R29
16.5K 1%
R31
16.5K 1%
R30
36.5K 1%
R50
52.3K 1%
R51
2.74K 1%
R52
100K 5%
C10
4.7uF
C11
4.7uF
C14
4.7uF
C24
4.7uF
C26
4.7uF
C28
4.7uF
C25
100pF
C27
100pF
C29
100pF
C16
18pF
C17
18pF
C13
1uF
C15
1uF
C20 1uF C21 1uF C22 1uF C23 1uF
C12
0.033uF
C19 220nFC18 220nF
GA
1
RA
2
GK
3
RK
4
D1
BiColored LED
GA
1
RA
2
GK
3
RK
4
D2
BiColored LED
GA
1
RA
2
GK
3
RK
4
D3
BiColored LED
GA
1
RA
2
GK
3
RK
4
D4
BiColored LED
GA
1
RA
2
GK
3
RK
4
D5
BiColored LED
GA
1
RA
2
GK
3
RK
4
D6
BiColored LED
1
1
GND
3
2
2
S2
TACTSW
1
1
GND
3
2
2
S3
TACTSW
1
1
GND
3
2
2
S4
TACTSW
1
1
GND
3
2
2
S5
TACTSW
1
1
GND
3
2
2
S6
TACTSW
R32
10K
R33
10K
R34
10K
R35
10K
R36
10K
R37
10K
R40
300
R42
300
R44
300
R46
300
R48
300
R39
270
R41
270
R43
270
R45
270
R47
270
R49
270
R27
22
DVCC
SD303 / SD307 Evaluation Board for the LMH0303 / LMH0307