Jumper
Jumper
Designator
Signal
Jumper Option
V_BRD
J25
V_BRD
DEF: 1-2 VBRD to MCU_PWR
J23
VDDA_HDR
DEF: 1-2 VDDA to MCU_PWR
VBAT
J35
VBATD Enable VBAT
DEF: 1-2
J36
VBATD Enable MCU_PWR
DEF: 1-2
PSV_TRG_USB
J24
PSV_TRG_USB
open
JM60 Bootloader
J34
JM60 BOOTLOAD EN
open OSJTAG mode
1-2 JM60 bootloader mode
VREG IN SELECTOR
J30
VREG IN SELECTOR
DEF: 1-2 Regulator powered by OSJTAG USB
5-6 K20 USB power power the K20 Regulator
8-6 TWR-USB power up the K20 Regulator
BOARD POWER
SELECTION
J29
BOARD POWER
SELECTION
DEF: 3-5 P3.3V_REG powers VBRD(MCU_PWR)
7-5 1.8V powers VBRD(MCU_PWR)
1-2 K20 3.3 Reg Output powers VBRD
(MCU_PWR)
Module
Jumper
Designator
Name
Options
K20 pin name
USB
J26
K20 USB ENA
DEF: 1-2
PTC9_EBI_AD6
J32
K20 USB FLGA
DEF: 1-2
PTC8_EBI_AD7/SSI0_CLK
IRDA
J9
IRDAJ
open
PTD7_CMT_IRO
J7
CMP0_IN0
open
PTC7_EBI_AD8/CMP0_IN1
Microphone
J16
Microphone Enable
DEF: 1-2
ADC0_DP3
Potentiometer
J15
Potentiometer Enable
DEF: 1-2
ADC0_DM3
Buzzer
J1
Buzzer Enable
DEF: 1-2
PTC4
Accelerometer
J19
SDA Accelerometer Enable
DEF: 1-2
PTB3_I2C0_SDA/ADC0_SE13/TSI0_CH8
J20
SCL Accelerometer Enable
DEF: 1-2
PTB2_I2C0_SCL/ADC0_SE12/TSI0_CH7
J18
ACCELEROMETER INT1
DEF: OPEN
PTB0/ADC0_SE8/TSI0_CH0
J17
ACCELEROMETER INT2
DEF: OPEN
PTB1/ADC0_SE9/TSI0_CH6
GPIO Header
J2
1
SAI0_RX_FS
PTC10_EBI_AD5/SSI0_RX_FS
2
SAI0_TX_FS
PTB19/SSI0_TX_FS/TSI0_CH12
3
SAI0_RXD0
PTC5
4
SAI0_TXD0
PTC1/UART_RTS/FTM0_CH0/TSI0_CH14
5
SAI0_RXD1
PTC11_LLWU_SSI0_RXD1
6
SAI0_TXD1
PTC0/SSI0_TXD/TSI0_CH13
7
SAI0_RX_BCLK PTC6
8
SAI0_TX_BCLK PTB18/SSI0_TX_BCLK/TSI0_CH11
9
SAI0_MCLK
PTC8_EBI_AD7/SSI0_CLK
10
GND
GND
LEDs
J13
LED orange Enable
DEF: 1-2
PTC10
J11
LED Yellow Enable
DEF: 1-2
PTC9
J4
LED Green Enable
DEF: 1-2
PTC7
J6
LED Blue
DEF: 1-2
PTC8
PTA12 - Header
J28
PTA12
1 MCU_PWR
2 PTA12
3 GND
This header can be used to power up an
external circuit/sensor
Push Buttons
SW2
Pushbutton1
PTC1
PTC1/UART_RTS/FTM0_CH0/TSI0_CH14
SW3
Pushbutton0
PTC2
PTC2/UART_CTS/FTM0_CH1/TSI0_CH15
TSI Electrodes
Elec1
Electrode1
TSI0_CH0
PTB0/ADC0_SE8/TSI0_CH0
Elec2
Electrode2
TSI0_CH6
PTB1/ADC0_SE9/TSI0_CH6
Default Configuration, Board powered by OSJTAG USB, RTC powered by PWR_MCU
TOWER SYSTEM
6
7
Quick Start Guide
TWR-K20D50M Jumper Options
The following is a list of all the jumper options. The default installed jumper
settings are shown in white text within the red boxes.
