5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
M_D12
M_D2
M_BA1
M_BA1
M_DQM1
M_A10
M_A11
SPI_D0
M_D8
M_A2
M_A0
M_RAS
M_D15
M_A8
DQ1
M_A11
M_BA0
M_CLK
DQ0
SPI_CE
SPI_D1
M_A1
SPI_WP
M_BA0
M_A5
DQ1
M_DQM0
M_D13
M_A9
M_CAS
M_CLK
M_A4
SPI_HOLD
M_RAS
M_D4
SPI_WP
DQ1
M_D3
DQ0
M_WE
M_D7
SPI_D1
M_D6
M_D1
M_A6
M_D5
M_D9
M_WE
SPI_CE
SPI_HOLD
M_D14
M_D10
M_CAS
RAM_CLK
SPI_CLK
M_A3
SPI_D0
M_A7
DQ0
M_D0
M_D11
SPI_CLK
GND
GND
GND
DVCC
SD_VCC3
GND
GND
GND
SPI_VCC3
SPI_VCC3
SD_VCC3
SD_VCC3
DVCC
SPI_VCC3
GND
GND
GND
SD_VCC3
GND
SD_VCC3
GND
M_CLK
2
SPI_CLK
2
M_RAS
2
SPI_CE
2
M_D[0..15]
2
M_A[0..11]
2
M_BA1
2
M_DQM[0..1]
2
M_CAS
2
M_BA0
2
M_WE
2
SPI_D0
2
I2C_CLK
2,8
I2C_DATA
2,8
M_A11
2
SPI_D1
2
2bit
I2C ADDR = 0XA0
0
1bit
R119
For 1bit SPI Flash
NC
0
NC
R121
SPI Mode Setting
CIRCUIT DIAGRAM- MAIN BOARD_FLASH&SDRAM
100pF/16V/0402
C219
100pF/16V/0402
C219
0.1uF
BC32
0.1uF
BC32
0.1uF/16V/0402
C100
0.1uF/16V/0402
C100
100pF/50V/0402
C91
100pF/50V/0402
C91
EC23
10uF/16V
EC23
10uF/16V
100pF/16V/0402
C220
100pF/16V/0402
C220
R69
33/0402
R69
33/0402
0.1uF/16V/0402
C191
0.1uF/16V/0402
C191
R70
NC/0402
R70
NC/0402
R67
4.7K/0402
R67
4.7K/0402
100pF/50V/0402
C215
100pF/50V/0402
C215
EC22
100uF/6.3V
EC22
100uF/6.3V
0.1uF/16V/0402
C85
0.1uF/16V/0402
C85
R86
0/0402
R86
0/0402
R68
4.7K/0402
R68
4.7K/0402
10pF/0402
C43
10pF/0402
C43
R71
0/0402
R71
0/0402
0.1uF/16V/0402
C104
0.1uF/16V/0402
C104
100pF/50V/0402
C92
100pF/50V/0402
C92
R72
0/0402
R72
0/0402
0.1uF/16V/0402
C99
0.1uF/16V/0402
C99
U7
SDRAM 1Mx16x4
U7
SDRAM 1Mx16x4
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
CAS
17
RAS
18
LDQM
15
WE
16
CS
19
CKE
37
CLK
38
UDQM
39
D0
2
D1
4
D2
5
D3
7
D4
8
D5
10
D6
11
D7
13
D8
42
D9
44
D10
45
D11
47
D12
48
D13
50
D14
51
D15
53
NC
36
BA0
20
VDD
1
VDD
27
VSS
28
VSS
41
A10/AP
22
NC/RFU
40
VDDq
3
VDDq
9
VDDq
43
VDDq
49
VSSq
6
VSSq
12
VSSq
46
VSSq
52
A11
35
BA1
21
VSS
54
VDD
14
R73
10K/0402
R73
10K/0402
0.1uF/16V/0402
C208
0.1uF/16V/0402
C208
U9
EN25T16
U9
EN25T16
CE#
1
DOUT
2
WP#
3
GND
4
DIN
5
SCK
6
HOLD#
7
VDD
8
U8
AT24C02
U8
AT24C02
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WP
7
VCC
8
R74
10K/0402
R74
10K/0402
0.1uF/16V/0402
C207
0.1uF/16V/0402
C207
100pF/16V/0402
C132
100pF/16V/0402
C132
100pF/50V/0402
C214
100pF/50V/0402
C214