参数资料
型号: MSP430F47167IPZ
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQFP100
封装: GREEN, PLASTIC, QFP-100
文件页数: 77/87页
文件大小: 1538K
代理商: MSP430F47167IPZ
MSP430F471x3, MSP430F471x6, MSP430F471x7
MIXED SIGNAL MICROCONTROLLER
SLAS626C -- OCTOBER 2008 -- REVISED MARCH 2011
79
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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 (I(TF)) of 1 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 27). 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
I(TF)
ITDI/TCLK
Figure 27. Fuse Check Mode Current MSP430F471x3/6/7
相关PDF资料
PDF描述
MSP430F47176IPZ 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQFP100
MC908QL2MDW 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC908QT4CDW 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
MC908QY1CDT 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
MC908QY2CDT 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
相关代理商/技术参数
参数描述
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