mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1206

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Reset
The preceding flow assumes that selection of the filter clock and filter factor do not
change and the target module is an on-chip module other than EGPIO.
If you enable the pin interrupt function of EGPIO on a port pin when the digital filter for
the pin is active for the input of another on-chip module, you must follow the
initialization of the pin interrupt.
If you enable only a digital filter for EGPIO input, you must perform the following steps:
46.5 Reset
The EGPIO module is reset automatically by any MCU reset.
The EGPIO module cannot cause an MCU reset.
Regarding EGPIO registers:
1206
5. Follow the flow for initialization of the pin interrupt if you still want the pin interrupt
6. Write 1 to the associated PTDFE bit to enable the digital filter for the pin.
1. Write 0 to the PTDFE bit to disable the digital filter for the pin, if it is active.
2. Disable other on-chip modules that have higher priority for pin control than EGPIO.
3. Follow initialization of the pin interrupt if you enable the pin interrupt function on
4. Write 1 to the PTDFE bit to enable the digital filter for the pin.
• The IFE register resets to FFh to disable passive low-pass filters on pads.
• The PV register is unaffected by reset. For details, refer to the register's description.
• A reset clears all other EGPIO registers.
function working with the target module.
this port pin.
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
Freescale Semiconductor, Inc.