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參數(shù)資料
| 型號： | MSP430C336IPJM |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, MROM, 3.8 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | PLASTIC, MS-022, QFP-100 |
| 文件頁數(shù)： | 30/42頁 |
| 文件大?。?/td> | 637K |
| 代理商： | MSP430C336IPJM |
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MSP430C33x, MSP430P337A
MIXED SIGNAL MICROCONTROLLERS
SLAS227A – OCTOBER 1999 – REVISED JUNE 2000
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
typical input/output schematics (continued)
JTAG fuse check mode
MSP430 devices that have the fuse on the TDI/VPP 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, 2.5 mA at 5 V can flow from the TDI/VPP 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.
Fuse check current may or may not flow continuously while the fuse check mode is active, depending on which
type of device is in use and the state of the TMS pin.
For the mask ROM or C versions, the fuse check current will only flow when the fuse check mode is active and
the TMS pin is in a low state (see Figure 20). Therefore, the additional current flow can be prevented by holding
the TMS pin high (default condition).
Time TMS Goes Low After POR
TMS
ITF
ITDI
Figure 20. Fuse Check Mode Current, MSP430C33x
For the OTP or P versions, the fuse check current will flow continuously when fuse check mode is active,
regardless of the state of the TMS pin, until the fuse check mode is deactivated with the second positive edge
at the TMS pin (see Figure 21).
Time TMS Goes Low After POR
TMS
ITF
ITDI
Figure 21. Fuse Check Mode Current, MSP430P337A
Care must be taken to avoid accidentally activating the fuse check mode, including guarding against EMI/ESD
spikes that could cause signal edges on the TMS pin.
Configuration of TMS, TCK, TDI/VPP and TDO/TDI pins in applications.
C3xx
P/E3xx
TDI
Open
68k, pulldown
TDO
Open
68k, pulldown
TMS
Open
TCK
Open
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSP430C336PJM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLERS |
| MSP430C337 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLERS |
| MSP430C337HFD | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLERS |
| MSP430C337IPJM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLERS |
| MSP430C337PJM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:MIXED SIGNAL MICROCONTROLLERS |
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