Pin
Number
Signal Name
Multiplex Modes
[1]
ALT0
ALT1
ALT2
ALT3
ALT4
ALT5
11
LCD_OE_ACD
OE_ACD
SLCDC_RS
12
PWMO1
13
LCD_LD0
LD0
SLCDC_D0
14
LCD_LD1
LD1
SLCDC_D1
15
LCD_LD2
LD2
SLCDC_D2
16
LCD_LD3
LD3
SLCDC_D3
17
LCD_LD4
LD4
SLCDC_D4
18
LCD_LD5
LD5
SLCDC_D5
19
GND
20
LCD_LD6
LD6
SLCDC_D6
21
LCD_LD7
LD7
c
22
LCD_LD8
LD8
SLCDC_D8
23
LCD_LD9
LD9
SLCDC_D9
24
LCD_LD10
LD10
SLCDC_D10
25
LCD_LD11
LD11
SLCDC_D11
26
GND
27
LCD_LD12
LD12
SLCDC_D12
28
LCD_LD13
LD13
SLCDC_D13
29
LCD_LD14
LD14
SLCDC_D14
30
LCD_LD15
LD15
SLCDC_D15
31
LCD_LD16
LD16
32
LCD_LD17
LD17
33
GND
34
TOUCH_XP
XP
35
TOUCH_XN
XN
36
TOUCH_YP
YP
37
TOUCH_YN
XN
38
GND
39
EXT_IO24
GPIO2_20
40
EXT_IO25
ROW0
UART3_RXD
GPIO2_29
41
EXT_IO26
ROW1
UART3_TXD
GPIO2_30
42
EXT_IO27
ROW2
UART3_RTS
AUD5_RXC
GPIO2_31
43
EXT_IO28
ROW3
UART3_CTS
AUD5_RXFS
GPIO3_0
44
EXT_IO29
COL0
UART4_RXD
AUD5_TXD
GPIO3_1
45
EXT_IO30
COL1
UART4_TXD
AUD5_RXD
GPIO3_2
46
EXT_IO31
COL2
UART4_RTS
AUD5_TXC
GPIO3_3
47
EXT_IO32
COL3
UART4_CTS
AUD5_TXFS
GPIO3_4
48
EXT_IO33
GPIO1_0
PWMO2
ROW4
I2C3_SCL
49
EXT_IO34
GPIO1_1
PWMO3
ROW5
I2C3_SDA
50
GND
[1]
For details on the multiplex modes of the i.MX257, please refer to the "i.MX25 Multimedia Applications Processor Reference Manual" stored in the /
document/datasheet directory on the included DVD.
Armadillo-400 Series Hardware Manual
Interface Specifications
28