參數(shù)資料
型號(hào)： PMS430E112
英文描述： 16-Bit Ultra-Low-Power Microcontroller. 4kB EPROM. 256B RAM
中文描述： 16位超低功耗微控制器。 4kB的存儲(chǔ)器。 256B的RAM
文件頁(yè)數(shù)： 25/29頁(yè)
文件大?。?/td> 411K
代理商： PMS430E112
MSP430x11x
MIXED SIGNAL MICROCONTROLLERS
SLAS196C
–
DECEMBER 1998
–
REVISED MARCH 2003
25
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
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, I
TF
, of 1 mA at 3 V, 2.5 mA at 5 V can flow from the TEST 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.
When the TEST pin is taken back 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 will only flow when the fuse check mode is active and the TMS pin is in a low state (see
Figure 6). Therefore, the additional current flow can be prevented by holding the TMS pin high (default
condition).
Time TMS Goes Low After POR
TMS
ITF
ITEST
Figure 6. Fuse Check Mode Current, MSP430x11x
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PMS430E315FZ 功能描述:16位微控制器 - MCU 16-BIT ULTRA-LOW-POWER MICROCONTROLLER, 16KB EPROM, 512B RAM, 92 SEGMENT LCD RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT
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