56F8335 datasheet(32/160 Pages) FREESCALE

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56F8335 Technical Data, Rev. 5

Freescale Semiconductor

Preliminary

EXTBOOT

Internal

Ground

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.

Note: This pin is internally tied low (to VSS).

EMI_MODE

Internal

Ground

Schmitt

Input

Input,

pull-up

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 pull-up resistor by setting the

EMI_MODE bit of the SIM_PUDR; see Part 6.5.6.

Note: This pin is internally tied low (to VSS).

Table 2-2 Signal and Package Information for the 128-Pin LQFP (Continued)

Signal

Name

Pin No.

Type

State

During

Reset

Signal Description

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