参数资料
型号: MC56F8145VFG
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 4-BIT, 120 MHz, OTHER DSP, PQFP128
封装: PLASTIC, LQFP-128
文件页数: 108/172页
文件大小: 871K
代理商: MC56F8145VFG
56F8345 Technical Data, Rev. 17
40
Freescale Semiconductor
Preliminary
After reset, the OMR MA bit can be changed and will have an effect on the P-space memory map, as shown
in Table 4-3. Changing the OMR MB bit will have no effect.
Table 4-4 shows the memory map options of the 56F8345/56F8145. The two right columns cannot be
used, since the EMI pins are not provided in the package; therefore, only the Mode 0 column is relevant.
Note: Program RAM is NOT available on the 56F8145 device.
1
Mode 1 – External Boot; Flash Memory is not secured; EMI configuration is
determined by the state of the EMI_MODE pin
1. Information in shaded areas not applicable to 56F8345/56F8145.
2. This bit is only configured at reset. If the Flash secured state changes, this will not be reflected in MB until the next reset.
3. Changing MB in software will not affect Flash memory security.
Table 4-3 Changing OMR MA Value During Normal Operation
OMR MA
Chip Operating Mode
0
Use internal P-space memory map configuration
11
1. Setting this bit can cause unpredictable results and is not recommended, since the EMI is not functional in this package.
Use external P-space memory map configuration – If MB = 0 at reset, changing this bit has no effect.
Table 4-2 OMR MB/MA Value at Reset1 (Continued)
OMR MB =
Flash Secured
State2,3
OMR MA =
EXTBOOT Pin
Chip Operating Mode
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