mcf5274l Freescale Semiconductor, Inc, mcf5274l Datasheet - Page 17

• Manufacturer Part Number: mcf5274l
• Description: Mcf5275 Integrated Microprocessor Family Hardware
• Manufacturer: Freescale Semiconductor, Inc

External reset on the RSTOUT pin is software-assertable independent of chip reset state. There are also
software-readable status flags indicating the cause of the last reset.
3.22 General Purpose I/O
Most peripheral I/O pins on MCF5275 devices are muxed with GPIO, adding flexibility and usability to
all signals on the chip.
4
Table 2
Freescale Semiconductor
lists the signals for the MCF5275 in functional group order.
Signal Descriptions
In this table and throughout this document a single signal within a group is
designated without square brackets (i.e., A24), while designations for
multiple signals within a group use brackets (i.e., A[23:21]) and is meant to
include all signals within the two bracketed numbers when these numbers
are separated by a colon.
The primary functionality of a pin is not necessarily its default functionality.
Pins that are muxed with GPIO will default to their GPIO functionality.
CLKMOD[1:0]
MCF5275 Integrated Microprocessor Family Hardware Specification, Rev. 1.1
RSTOUT
CLKOUT
A[23:21]
RESET
EXTAL
RCON
Name
XTAL
PADDR[7:5]
Table 2. Signal Information and Muxing
GPIO
Port
External Memory Interface and Ports
—
—
—
—
—
—
—
Alternate1
Mode Selection
CS[6:4]
Preliminary
—
—
—
—
—
—
—
NOTE
NOTE
Reset
Clock
Alternate2 Dir.
—
—
—
—
—
—
—
—
O
O
O
O
I
I
I
I
1
1
1
1
1
1
2
1
3
1
1
1
1
1
2
1
3
Signal Descriptions
17