Datasheet

ECCN 5E002 TSPA - Technology / Software Publicly Available
CC430F6137, CC430F6135, CC430F6127, CC430F6126, CC430F6125
CC430F5137, CC430F5135, CC430F5133
www.ti.com SLAS554H –MAY 2009–REVISED SEPTEMBER 2013
JTAG Operation
JTAG Standard Interface
The CC430 family supports the standard JTAG interface which requires four signals for sending and receiving
data. The JTAG signals are shared with general-purpose I/O. The TEST/SBWTCK pin is used to enable the
JTAG signals. In addition to these signals, the RST/NMI/SBWTDIO is required to interface with MSP430
development tools and device programmers. The JTAG pin requirements are shown in Table 7. For further
details on interfacing to development tools and device programmers, see the MSP430 Hardware Tools User's
Guide (SLAU278). For a complete description of the features of the JTAG interface and its implementation, see
MSP430 Programming Via the JTAG Interface (SLAU320).
Table 7. JTAG Pin Requirements and Functions
DEVICE SIGNAL DIRECTION FUNCTION
PJ.3/TCK IN JTAG clock input
PJ.2/TMS IN JTAG state control
PJ.1/TDI/TCLK IN JTAG data input, TCLK input
PJ.0/TDO OUT JTAG data output
TEST/SBWTCK IN Enable JTAG pins
RST/NMI/SBWTDIO IN External reset
VCC Power supply
VSS Ground supply
Spy-Bi-Wire Interface
In addition to the standard JTAG interface, the CC430 family supports the two wire Spy-Bi-Wire interface. Spy-Bi-
Wire can be used to interface with MSP430 development tools and device programmers. The Spy-Bi-Wire
interface pin requirements are shown in Table 8. For further details on interfacing to development tools and
device programmers, see the MSP430 Hardware Tools User's Guide (SLAU278). For a complete description of
the features of the JTAG interface and its implementation, see MSP430 Programming Via the JTAG Interface
(SLAU320).
Table 8. Spy-Bi-Wire Pin Requirements and Functions
DEVICE SIGNAL DIRECTION FUNCTION
TEST/SBWTCK IN Spy-Bi-Wire clock input
RST/NMI/SBWTDIO IN, OUT Spy-Bi-Wire data input/output
VCC Power supply
VSS Ground supply
Flash Memory
The flash memory can be programmed via the JTAG port, Spy-Bi-Wire (SBW), or in-system by the CPU. The
CPU can perform single-byte, single-word, and long-word writes to the flash memory. Features of the flash
memory include:
• Flash memory has n segments of main memory and four segments of information memory (Info A to Info D)
of 128 bytes each. Each segment in main memory is 512 bytes in size.
• Segments 0 to n may be erased in one step, or each segment may be individually erased.
• Segments Info A to Info D can be erased individually, or as a group with the main memory segments.
Segments Info A to Info D are also called information memory.
• Segment A can be locked separately.
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CC430F5135 CC430F5133