Datasheet

56F8355 Technical Data, Rev. 17
34 Freescale Semiconductor
Preliminary
EXTBOOT Internal
Ground
Schmitt
Input
Input,
pullup
enabled
External Boot — This input is tied to V
DD
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 pullup resistor by setting the XBOOT bit of the
SIM_PUDR; see Part 6.5.6.
Note: This pin is internally tied low (to V
SS
).
EMI_MODE Internal
Ground
Schmitt
Input
Input,
pullup
enabled
External Memory Mode — This device will boot from internal
Flash memory under normal operation.
This function is also affected by EXTBOOT and the Flash security
mode; see Table 4-4 for details.
Note: When this pin is tied low, the customer boot software should
disable the internal pullup resistor by setting the EMI_MODE bit of
the SIM_PUDR; see Part 6.5.6.
Note: This pin is internally tied low (to V
SS
).
Table 2-2 Signal and Package Information for the 128-Pin LQFP (Continued)
Signal Name Pin No. Type
State
During
Reset
Signal Description