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| 型号： | MSP430C412IRTD |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 8 MHz, RISC MICROCONTROLLER, PQCC64 |
| 封装： | PLASTIC, QFN-64 |
| 文件页数： | 46/58页 |
| 文件大小： | 1160K |
| 代理商： | MSP430C412IRTD |
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MSP430x41x
MIXED SIGNAL MICROCONTROLLER
SLAS340H MAY 2001 REVISED APRIL 2007
50
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
JTAG fuse check mode
MSP430 devices that have the fuse on the TDI/TCLK 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 1.8 mA at 3 V can flow from the TDI/TCLK pin to ground if the fuse is not burned. Care must be
taken to avoid accidentally activating the fuse check mode and increasing overall system power consumption.
Activation of the fuse check mode occurs with the first negative edge on the TMS pin after power up or if the
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 only flows when the fuse check mode is active and the TMS pin is in a low state (see
Figure 22). Therefore, the additional current flow can be prevented by holding the TMS pin high (default
condition).
The JTAG pins are terminated internally, and therefore do not require external termination.
Time TMS Goes Low After POR
TMS
ITF
ITDI/TCLK
Figure 22. Fuse Check Mode Current, MSP430C41x, MSP430F41x
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相关代理商/技术参数 |
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| MSP430C413 | 制造商:TI 制造商全称:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLER |
| MSP430C413CY | 制造商:TI 制造商全称:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLER |
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| MSP430-CCRF | 功能描述:开发板和工具包 - MSP430 868 / 915MHZ TRANS FOR CC430F5137 RoHS:否 制造商:Olimex Ltd. 产品:Development Boards 工具用于评估:MSP430F5510 核心:MSP430 接口类型:JTAG, USB 工作电源电压:5 V |
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