mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 57

• Manufacturer Part Number: mc68hc912bd32
• Description: 16-bit Device Composed Of Standard On-chip Peripherals
• Manufacturer: Freescale Semiconductor, Inc

Memory Maps
11-mode
MAPROM — Map Location of Flash EEPROM
ROMON — Enable Flash EEPROM
The following diagrams illustrate the memory map for each mode of
operation immediately after reset.
This bit determines the location of the on-chip Flash EEPROM. In
Expanded modes it is reset to zero. In Single Chip modes it is reset to
one. If ROMON is zero, this bit has no meaning or effect.
In Expanded modes ROMON is reset to zero. In Single Chip modes it
is reset to one. If the internal RAM, registers, EEPROM, or BDM ROM
(if active) are mapped to the same space as the Flash EEPROM, they
will have priority over the Flash EEPROM.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = Flash EEPROM is located from $0000 to $7FFF
1 = Flash EEPROM is located from $8000 to $FFFF
0 = Disables the Flash EEPROM in the memory map
1 = Enables the Flash EEPROM in the memory map
Operating Modes and Resource Mapping
Stretch bit EXSTR1
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Table 13 Expanded Stretch-Bit Definition
0
0
1
1
Stretch bit EXSTR0
0
1
0
1
Operating Modes and Resource Mapping
E Clocks Stretched
MC68HC912BD32 Rev 1.0
0
1
2
3
Memory Maps