Debug Probes Hardware and Software
45
SLAU647L – July 2015 – Revised February 2018
Copyright © 2015–2018, Texas Instruments Incorporated
MSP Debuggers
5.9
eZ430 Onboard Emulation
The eZ430 onboard emulation is the legacy onboard flash emulation for application development on
MSP430 microcontrollers. The eZ-FET and eZ-FET Lite onboard emulation are the successors of the
legacy eZ430.
The eZ430 provides a USB interface to program and debug the MSP430 devices in-system through the
pin-saving Spy-Bi-Wire (2-wire JTAG) protocol. Furthermore, the USB interface can be used for
Backchannel UART communication.
NOTE:
The eZ430 does not support all MSP430 device families. See
for more details about
device support.
The eZ430 onboard emulation and its backchannel UART might fail to enumerate on USB
3.0 computer ports. If enumeration fails, reconfigure the USB 3.0 port to USB 2.0 mode in
your computer BIOS.
If the eZ430 onboard emulation is used with active software breakpoints, the RUN to MAIN
function might fail. Disable software breakpoints to enable RUN to MAIN.
Figure 38. eZ430 Emulation
5.9.1
General Features
USB debug interface to connect a MSP430 MCU to a PC for real-time in-system programming and
debugging.
Features:
•
Operating systems: Windows
•
Fixed supply voltage between 3.6 V at 75 mA
•
Support Spy-Bi-Wire (2-wire JTAG) debug protocol
•
Software Breakpoint in Flash, FRAM, and RAM support
•
Flash and FRAM programming support
•
Backchannel UART
•
Software field update is
not
possible (see
for device support details)
•
Limited device support
