Datasheet

Chapter 3 Memory Mapping Control (S12XMMCV4)
MC9S12XE-Family Reference Manual Rev. 1.25
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 Table 3-5)
CS1 O Chip select line 1
CS2 O Chip select line 2
CS3 O Chip select line 3