User's Manual

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V
CC
/ AV
CC
/ DV
CC
V
SS
/ AV
SS
/ DV
SS
TEST/SBWTCK
MSP430Fxxx
RST/NMI/SBWTDIO
10μF 0.1μF
47kΩ
TDO/TDI
TCK
GND
TEST/VPP
V
CC
JTAG
R1
VCC TOOL
VCC TARGET
2.2 nF
See Note B
C1
C2 C3
330Ω
R2
J1 (see Note A)
J2 (see Note A)
See Note B
Signal Connections for In-System Programming and Debugging www.ti.com
A Make connection J1 if a local target power supply is used, or make connection J2 if the target is powered from the
debug or programming adapter.
B The device RST/NMI/SBWTDIO pin is used in 2-wire mode for bidirectional communication with the device during
JTAG access, and any capacitance that is attached to this signal may affect the ability to establish a connection with
the device. The upper limit for C1 is 2.2 nF when using current TI tools.
Figure 2-2. Signal Connections for 2-Wire JTAG Communication (Spy-Bi-Wire) Used by MSP430F2xx and
MSP430F4xx Devices
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Design Considerations for In-Circuit Programming SLAU278I–May 2009–Revised May 2012
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