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參數資料
型號： MC9S12DG128BCPV
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： MC9S12DT128B
中文描述： 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112
封裝： 20 X 20 MM, 1.40 MM HEIGHT, 0.65 MM PITCH, LQFP-112
文件頁數： 69/124頁
文件大小： 577K
代理商： MC9S12DG128BCPV
MC9S12DT128B Device User Guide — V01.07
69
4.3.3 Unsecuring the Microcontroller
In order to unsecure the microcontroller, the internal FLASH and EEPROM must be erased. This can be
done through an external program in expanded mode.
Once the user has erased the FLASH and EEPROM, the part can be reset into special single chip mode.
This invokes a program that verifies the erasure of the internal FLASH and EEPROM. Once this program
completes,theusercaneraseandprogramtheFLASHsecuritybitstotheunsecuredstate.Thisisgenerally
done through the BDM, but the user could also change to expanded mode (by writing the mode bits
through the BDM) and jumping to an external program (again through BDM commands). Note that if the
part goes through a reset before the security bits are reprogrammed to the unsecure state, the part will be
secured again.
4.4 Low Power Modes
The microcontroller features three main low power modes. Consult the respective Block User Guide for
information on the module behavior in Stop, Pseudo Stop, and Wait Mode. An important source of
information about the clock system is the Clock and Reset Generator User Guide (CRG).
4.4.1 Stop
Executing the CPU STOP instruction stops all clocks and the oscillator thus putting the chip in fully static
mode. Wake up from this mode can be done via reset or external interrupts.
4.4.2 Pseudo Stop
This mode is entered by executing the CPU STOP instruction. In this mode the oscillator is still running
and the Real Time Interrupt (RTI) or Watchdog (COP) sub module can stay active. Other peripherals are
turned off. This mode consumes more current than the full STOP mode, but the wake up time from this
mode is significantly shorter.
4.4.3 Wait
This mode is entered by executing the CPU WAI instruction. In this mode the CPU will not execute
instructions.TheinternalCPUsignals(addressanddatabus)willbefullystatic.Allperipheralsstayactive.
For further power consumption the peripherals can individually turn off their local clocks.
4.4.4 Run
Although this is not a low power mode, unused peripheral modules should not be enabled in order to save
power.
相關PDF資料
PDF描述
MC9S12DG128BMFU MC9S12DT128B
MC9S12DG128BMPV MC9S12DT128B
MC9S12DG128BVFU MC9S12DT128B
MC9S12DG128BVPV MC9S12DT128B
MC9S12DJ128B MC9S12DT128B
相關代理商/技術參數
參數描述
MC9S12DG128BMFU 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC9S12DG128BVFU 功能描述:16位微控制器 - MCU 16 Bit 25MHz RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 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 安裝風格:SMD/SMT
MC9S12DG128CFU 制造商:FREESCALE-SEMI 功能描述:
MC9S12DG128CFUE 功能描述:16位微控制器 - MCU 16 BIT 25 MHZ RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 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 安裝風格:SMD/SMT
MC9S12DG128CFUER 功能描述:16位微控制器 - MCU 128K FLASH 9S12 MCU MARL RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數據總線寬度:16 bit 最大時鐘頻率:24 MHz 程序存儲器大小:8 KB 數據 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 安裝風格:SMD/SMT
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