21
SAMA5D3 Xplained [USER GUIDE]
Atmel-11269D-ATARM-SAMA5D3-Xplained-XPLD-User Guide_07-Sep-15
Figure 4-16.
Pushbutton Schematic
4.2.14 LCD
The SAMA5D36 processor drives 24 bits of data and control signals to the LCD interface. Other signals are used
to control the LCD and are also routed to the J22 connector: TWI, SPI, 2 GPIOs for interrupt, ID for 1-Wire
EEPROM (ID_SYS) and power supply lines.
4.2.14.1 LCD Connector
One 1.27 mm pitch 50-pin header is provided to gain access to the LCD signals.
Figure 4-17.
LCD Expansion Header Interface Schematic
4.2.14.2 LCD Power
To operate correctly with various LCD modules, regardless of the processor, two voltage lines are available: 3V3
by default and 5V_MAIN, both selected by 0R resistors R92 and R93.
BP2
BP1
RESET
WAKUP or Force Power ON
Auto
PWRON
(option)
R14
50K
R14
50K
BP2
BP2
C20
100nF
C20
100nF
GNDP
1
29
GNDA
2
GNDP
2
28
REFBP
32
nPBIN
9
Q1
IRLML2502
Q1
IRLML2502
1
3
2
R19
100K 1%
R19
100K 1%
R15
0R
R15
0R
C18
47nF
C18
47nF
C25
100nF
C25
100nF
R12
49.9K
C130
10nF
C130
10nF
BP1
BP1
PE29
[7,11]
Place TP5 to Bottom
BP3
BP3
TP5
SMD
TP5
SMD
USER BUTTON
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA15
PA14
PA13
PA12
PA25
PA24
PC13
PC12
PC11
PC14
PC10
PC15
PE27
PE28
PA29
PA27
PA26
PE8
PE7
TWD_LCD
TWCK_LCD
PE23
PD10
PD11
PD12
PD16
PD20
PD21
PD22
PD23
PE6
NRST
TWCK_LCD
TWD_LCD
PA28
3V3
5V_MAIN
TWCK_LCD
[7]
TWD_LCD
[7]
LCD Connector
(ID_SYS)
(SPI0_SPCK)
(SPI0_MOSI)
(SPI0_MISO)
(SPI0_NPCS3)
(AD0)
(AD1)
(AD2)
(AD3)
(RST_LCD)
(LCDDAT0)
(LCDDAT1)
(LCDDAT2)
(LCDDAT3)
(LCDDAT4)
(LCDDAT5)
(LCDDAT6)
(LCDDAT7)
(LCDDAT8)
(LCDDAT9)
(LCDDAT10)
(LCDDAT11)
(LCDDAT12)
(LCDDAT13)
(LCDDAT14)
(LCDDAT15)
(LCDDAT16)
(LCDDAT17)
(LCDDAT18)
(LCDDAT19)
(LCDDAT20)
(LCDDAT21)
(LCDDAT22)
(LCDDAT23)
(LCDPCK)
(LCDVSYNC)
(LCDHSYNC)
(LCDDEN)
(LCDDISP)
(LCDPWM)
(IRQ2)
IRQ1)
R101
22R
R101
22R
R103
22R
R103
22R
R93
0R
R93
0R
R102
DNP(0R)
R102
DNP(0R)
R100
DNP(0R)
R100
DNP(0R)
R184
22R
R184
22R
R99
DNP(0R)
R99
DNP(0R)
J22
J22
FP520T1-50SR04
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
52
51
R92
DNP(0R)
R92
DNP(0R)
R94
0R
R94
0R
R96
22R
R96
22R
R98
DNP(0R)
R98
DNP(0R)
R97
22R
R97
22R
R95
DNP(0R)
R95
DNP(0R)
See
Errata section
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