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MSP430F2619 データシート(PDF) 94 Page - Texas Instruments |
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MSP430F2619 データシート(HTML) 94 Page - Texas Instruments |
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94 / 120 page  Time TMS Goes Low After POR TMS ITF ITDI/TCLK 94 MSP430F2619, MSP430F2618, MSP430F2617, MSP430F2616 MSP430F2419, MSP430F2418, MSP430F2417, MSP430F2416 SLAS541L – JUNE 2007 – REVISED MAY 2020 www.ti.com Submit Documentation Feedback Product Folder Links: MSP430F2619 MSP430F2618 MSP430F2617 MSP430F2616 MSP430F2419 MSP430F2418 MSP430F2417 MSP430F2416 Detailed Description Copyright © 2007–2020, Texas Instruments Incorporated 6.10.15 JTAG Fuse Check Mode MSP430 devices that have the fuse on the TEST terminal have a fuse check mode that tests the continuity of the fuse the first time the JTAG port is accessed after a power-on reset (POR). When activated, a fuse check current (ITF) of 1 mA at 3 V or 2.5 mA at 5 V can flow from the TEST pin to ground if the fuse is not burned. Take care to avoid accidentally activating the fuse check mode and increasing overall system power consumption. When the TEST pin is again taken low after a test or programming session, the fuse check mode and sense currents are terminated. Activation of the fuse check mode occurs with the first negative edge on the TMS pin after power up or if TMS is being held low during power up. The second positive edge on the TMS pin deactivates the fuse check mode. After deactivation, the fuse check mode remains inactive until another POR occurs. After each POR, the fuse check mode has the potential to be activated. The fuse check current flows only when the fuse check mode is active and the TMS pin is in a low state (see Figure 6-20). Therefore, the additional current flow can be prevented by holding the TMS pin high (default condition). Figure 6-20. Fuse Check Mode Current |
同様の部品番号 - MSP430F2619 |
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同様の説明 - MSP430F2619 |
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