Quick Start Guide
8
TWR-VF65GS10 Jumper Options
The following is a list of all jumper options on the TWR-VF65GS10. The default
installed jumper settings are shown in white text within the colored boxes.
Jumper
Option
Setting
Description
J1
VBAT Power Source,
Secure RTC, 32 kHz
XOSC, Tamper and
Monitors
1-2
VBAT tied to main 3.3 V (VCC_3V3_MCU)
2-3
VBAT tied to coin cell
J4
MCU 3.3 V Supply
ON
VDD33 power to the MCU (P3V3 tied to
VDD33 of device)
OFF
VDD33 power to the MCU disconnected
J6
JTAG 5 V Selection
OFF
Pin 11 and 13 of JTAG connector floating
ON
Pin 11 and 13 of JTAG connecter tied to 5 V
J7
Tamper Loopback
ON
EXT_WM0_TAMPER_IN tied to EXT_WM0_
TAMPER_OUT
OFF
EXT_WM0_TAMPER_IN open;
EXT_WM0_TAMPER_OUT open
J13
Accelerometer
Interrupt
ON
Connect MCU PTB9 pin to INT1 of
MMA8451Q accelerometer
OFF
No accelerometer interrupt connection
