Pin
Name
Description
Mode 2
Description
Mode 3
Level
1-10
Identical to standard
Identical to standard
3.3 V
11 *1
KP_ROW4
Keypad row 4
Keypad row 4
12 *1
KP_COL4
Keypad column 4
Keypad column 4
13
KP_ROW5_DMA
Keypad row 5
SPI Interrupt Request
14
KP_COL5_SS1
Keypad column 5
SPI Slave Select 1
15
KP_ROW6_MISO
Keypad row 6
SPI Master in Slave out
16
KP_COL6_MOSI
Keypad column 6
SPI Master out Slave in
17
KP_ROW7_SLK
Keypad row 7
SPI Serial Clock
18
KP_COL7_SS0
Keypad column 7
SPI Slave Select 0
19
Aux_Out
500 mA (can be controlled by software)
5.0 V
20
Keypad
Pin3
Pin4
Pin5
Pin6
Pin7
Pin8
Pin9
Pin10
Pin11
Pin12
Pin13
Pin14
Pin15
Pin16
Pin17
Pin18
ROW2
GPIO4_20
GPIO4_17
GPIO4_19
GPIO4_21
ROW3
GPIO4_5
COL1
COL0
GPIO4_18
GPIO4_16
GPIO1_19
COL3
COL2
ROW0
ROW1
SPI
RDY
SS1
MISO
MOSI
SCLK
SS0
Keypad-I/F
I2C
SDA
SCL
OPTION: KEYPAD
PWM2
SS3
SS2
PWM
USB
USB_DN
USB_DP
Place close to X21
RESET
RESET_IN#
not usable as GPIO if HDMI is populated
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*1 If Option HDMI is populated:
not usable as keypad row 4 and keypad column 4 (mode 2 / mode 3)
I²C2 is shared with I²C at HMDI
Pull-Ups of about 2kOhm to 3.3V existing on I²C signals.
3 2
2
1
PRODUCT MANUAL
SANTOKA core
Keypad/SPI/I²C, multiplexed 1*
* alternative assembly upon request
