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参数资料
| 型号： | MC56F8155VFGE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 27/172页 |
| 文件大小： | 0K |
| 描述： | IC DSP 16BIT 40MHZ 128-LQFP |
| 标准包装： | 72 |
| 系列： | 56F8xxx |
| 核心处理器： | 56800E |
| 芯体尺寸： | 16-位 |
| 速度： | 40MHz |
| 连通性： | EBI/EMI，SCI，SPI |
| 外围设备： | POR，PWM，WDT |
| 输入/输出数： | 49 |
| 程序存储器容量： | 256KB（128K x 16） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 8K x 16 |
| 电压 - 电源 (Vcc/Vdd)： | 2.25 V ~ 3.6 V |
| 数据转换器： | A/D 16x12b |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 105°C |
| 封装/外壳： | 128-LQFP |
| 包装： | 托盘 |
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56F8355 Technical Data, Rev. 17
122
Freescale Semiconductor
Preliminary
The 56800E core contains both STOP and WAIT instructions. Both put the CPU to sleep. For lowest
power consumption in Stop mode, the PLL can be shut down. This must be done explicitly before entering
Stop mode, since there is no automatic mechanism for this. When the PLL is shut down, the 56800E
system clock must be set equal to the oscillator output.
Some applications require the 56800E STOP and WAIT instructions to be disabled. To disable those
instructions, write to the SIM control register (SIM_CONTROL), described in Part 6.5.1. This procedure
can be on either a permanent or temporary basis. Permanently assigned applications last only until their
next reset.
6.9 Resets
The SIM supports four sources of reset. The two asynchronous sources are the external RESET pin and
the Power-On Reset (POR). The two synchronous sources are the software reset, which is generated within
the SIM itself by writing to the SIM_CONTROL register, and the COP reset.
Reset begins with the assertion of any of the reset sources. Release of reset to various blocks is sequenced
to permit proper operation of the device. A POR reset is first extended for 221 clock cycles to permit
stabilization of the clock source, followed by a 32 clock window in which SIM clocking is initiated. It is
then followed by a 32 clock window in which peripherals are released to implement Flash security, and,
finally, followed by a 32 clock window in which the core is initialized. After completion of the described
reset sequence, application code will begin execution.
Resets may be asserted asynchronously, but are always released internally on a rising edge of the system
clock.
Part 7 Security Features
The 56F8355/56F8155 offer security features intended to prevent unauthorized users from reading the
contents of the Flash Memory (FM) array. The Flash security consists of several hardware interlocks that
block the means by which an unauthorized user could gain access to the Flash array.
However, part of the security must lie with the user’s code. An extreme example would be user’s code that
dumps the contents of the internal program, as this code would defeat the purpose of security. At the same
time, the user may also wish to put a “backdoor” in his program. As an example, the user downloads a
security key through the SCI, allowing access to a programming routine that updates parameters stored in
another section of the Flash.
7.1 Operation with Security Enabled
Once the user has programmed the Flash with his application code, the device can be secured by
programming the security bytes located in the FM configuration field, which occupies a portion of the FM
array. These non-volatile bytes will keep the part secured through reset and through power-down of the
device. Only two bytes within this field are used to enable or disable security. Refer to the Flash Memory
section in the 56F8300 Peripheral User Manual for the state of the security bytes and the resulting state
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相关代理商/技术参数 |
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|---|---|
| MC56F8156 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:16-bit Digital Signal Controllers |
| MC56F8156VFV | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Freescale Semiconductor 功能描述: |
| MC56F8156VFVE | 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MC56F8157 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:16-BIT HYBRID CONTROLLERS |
| MC56F8157VPY | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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