参数资料
型号: MC9S12C96CFA16
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
封装: LQFP-48
文件页数: 101/136页
文件大小: 2022K
代理商: MC9S12C96CFA16
Device User Guide — 9S12C128DGV1/D V01.05
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of this is the user downloads a key through the SCI which allows access to a programming routine that
updates parameters.
4.3.1 Securing the Microcontroller
Once the user has programmed the FLASH, the part can be secured by programming the security bits
located in the FLASH module. These non-volatile bits will keep the part secured through resetting the part
and through powering down the part.
The security byte resides in a portion of the Flash array.
Check the Flash Block User Guide for more details on the security configuration.
4.3.2 Operation of the Secured Microcontroller
4.3.2.1 Normal Single Chip Mode
This will be the most common usage of the secured part. Everything will appear the same as if the part was
not secured with the exception of BDM operation. The BDM operation will be blocked.
4.3.2.2 Executing from External Memory
The user may wish to execute from external space with a secured microcontroller. This is accomplished
by resetting directly into expanded mode. The internal FLASH will be disabled. BDM operations will be
blocked.
4.3.3 Unsecuring the Microcontroller
In order to unsecure the microcontroller, the internal FLASH must be erased. This can be done through an
external program in expanded mode or via a sequence of BDM commands. Unsecuring is also possible via
the Backdoor Key Access. Refer to Flash Block Guide for details.
Once the user has erased the FLASH, the part can be reset into special single chip mode. This invokes a
program that verifies the erasure of the internal FLASH. Once this program completes, the user can erase
and program the FLASH security bits to the unsecured state. This is generally 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).
相关PDF资料
PDF描述
MC9S12C96PMFU16 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP80
MC9S12GC16CPB25 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP52
M37510M6-XXXFP 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP176
M926-02I700.0000 700 MHz, OTHER CLOCK GENERATOR, CQCC36
MC68HC08GP16AMB 8-BIT, MROM, 8.2 MHz, MICROCONTROLLER, PDIP42
相关代理商/技术参数
参数描述
MC9S12C96CFAE 功能描述:16位微控制器 - MCU 9S12C96-KOI-EPP RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
MC9S12C96CFU 制造商:Freescale Semiconductor 功能描述:16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
MC9S12C96CFUE 功能描述:16位微控制器 - MCU 9S12C96 (KOI) - PB FREE RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
MC9S12C96CFUER 功能描述:16位微控制器 - MCU 9S12C96 (KOI) - PB FREE RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
MC9S12C96CPBE 功能描述:16位微控制器 - MCU 9S12C96 TSMC3 EPP RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT