MC9S12XD256MAL Datasheet, PDF (615/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network

Chapter 17 Memory Mapping Control (S12XMMCV2)
Table 1-2 and Table 1-3 outline the pin names and functions. It also provides a brief description of their
operation.
Table 17-1. External Input Signals Associated with the MMC
Signal
I/O
MODC
I
MODB
I
MODA
I
EROMCTL
I
ROMCTL
I
Description
Mode input
Mode input
Mode input
EROM control input
ROM control input
Availability
Latched after
RESET (active low)
Signal
CS0
CS1
CS2
CS3
Table 17-2. External Output Signals Associated with the MMC
Available in Modes
I/O
Description
NS
SS
NX
ES
EX
ST
O
Chip select line 0
O
Chip select line 1
O
Chip select line 2
O
Chip select line 3
(see Table 1-4)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
615