參數(shù)資料
型號: MC56F8156VFVE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數(shù)字信號處理
英文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP144
封裝: ROHS COMPLIANT, LQFP-144
文件頁數(shù): 110/178頁
文件大?。?/td> 910K
代理商: MC56F8156VFVE
Signal Pins
56F8356 Technical Data, Rev. 13
Freescale Semiconductor
37
Preliminary
EXTBOOT
112
Schmitt
Input
Input,
pull-up
enabled
External Boot — This input is tied to VDD to force the device to
boot from off-chip memory (assuming that the on-chip Flash
memory is not in a secure state). Otherwise, it is tied to ground.
For details, see Table 4-4.
Note: When this pin is tied low, the customer boot software should
disable the internal pull-up resistor by setting the XBOOT bit of the
SIM_PUDR; see Part 6.5.6.
EMI_MODE
143
Schmitt
Input
Input,
pull-up
enabled
External Memory Mode — The EMI_MODE input is internally tied
low (to VSS). This device will boot from internal flash memory
under normal operation. This function is also affected by
EXTBOOT and the Flash security mode. For details, see
If a 20-bit address bus is not desired, then this pin is tied to
ground.
Note: When this pin is tied low, the customer boot software should
disable the internal pull-up resistor by setting the EMI_MODE bit of
the SIM_PUDR; see Part 6.5.6.
Table 2-2 Signal and Package Information for the 144-Pin LQFP (Continued)
Signal Name
Pin No.
Type
State
During
Reset
Signal Description
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