Chapter 3 Memory Mapping Control (S12XMMCV4)
MC9S12XE-Family Reference Manual Rev. 1.19
Freescale Semiconductor
191
Table 3-3. External Input Signals Associated with the MMC
Signal
I/O
Description
Availability
MODC
I
Mode input
Latched after
RESET (active low)
MODB
I
Mode input
Latched after
RESET (active low)
MODA
I
Mode input
Latched after
RESET (active low)
EROMCTL
I
EROM control input
Latched after
RESET (active low)
ROMCTL
I
ROM control input
Latched after
RESET (active low)
Table 3-4. External Output Signals Associated with the MMC
Signal
I/O
Description
Available in Modes
NS
SS
NX
ES
EX
ST
CS0
O
Chip select line 0
(see
)
CS1
O
Chip select line 1
CS2
O
Chip select line 2
CS3
O
Chip select line 3
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages