SLAU647O July 2015 – April 2020
Table 10 lists the specifications for the MSP-FET interface to MSP430 microcontrollers.
| JTAG and Spy-Bi-Wire Interface, Electrical | ||
| Power supply | USB powered,
200 mA (max) |
|
| Target output voltage VCC_TOOL | 1.8 V to 3.6 V | Selectable in 0.1-V steps. VCC_TOOL available from JTAG pin 2. |
| Target output current | 100 mA (max) | Current supplied through JTAG pin 2 |
| Target output overcurrent detection level | 160 mA (max) | |
| JTAG signal overcurrent detection level | 30 mA (max) | Total current supplied through JTAG pins 1, 3, 5, 7, 8, 10, 11, 12, 13, 14 |
| External target supply | Supported
(1.8 V to 3.6 V) |
Connect external target voltage VCC_TARGET to JTAG pin 4. JTAG and SBW signals are regulated to external target voltage ±100 mV. |
| Fuse blow | Supported | For devices with poly-fuse |
| JTAG and Spy-Bi-Wire Interface, Timing | ||
| JTAG clock speed | 8 MHz (max) | Protocol speed selectable by software |
| SBW clock speed | 8 MHz (max) | Protocol speed selectable by software. System limitations due to external RC components on reset pin might apply. |
| JTAG and Spy-Bi-Wire Interface, Speed | ||
| Flash write speed (JTAG) | Up to 20 kB/s | |
| Flash write speed (SWB) | Up to 7 kB/s | |
| FRAM write speed (JTAG) | Up to 50 kB/s | |
| FRAM write speed (SWB) | Up to 14 kB/s | |