Memory Maps

16-bit Microcontroller HCS12H Family, Rev. 11.1

Freescale Semiconductor

23

PRELIMINARY

Figure 10. MC9(3)S12HZ(N)64 User Configurable Memory Map

$0000

$FFFF

$C000

$8000

$4000

$3000

$FF00

EXT

NORMAL

SINGLE CHIP

EXPANDED

SPECIAL

SINGLE CHIP

VECTORS

VECTORS

VECTORS

$FF00

$FFFF

BDM

(If Active)

$C000

$FFFF

16K Fixed Flash EEPROM

2K, 4K, 8K or 16K Protected Boot Sector

$8000

$BFFF

16K Page Window

Four * 16K Flash EEPROM Pages

$4000

$7FFF

16K Fixed Flash EEPROM

0.5K, 1K, 2K or 4K Protected Sector

$3000

$3FFF

4K Bytes RAM

Mappable to any 4K Boundary

$0000

$03FF

1K Register Space

Mappable to any 2K Boundary

The figure shows a useful map, which is not the map out of reset. After reset the map is:

$0000 - $03FF: Register Space

$0000 - $0FFF: 4K RAM (1K not visible)

$0400

$0800

$1000

$0800

$0FFF

1K Bytes EEPROM

Mappable to any 2K Boundary

(1K mapped twice in 2K Boundary)

$0000 - $07FF: 1K EEPROM mapped twice (not visible)

There is no mapping of EEPROM Flash on MC3S12HZ(N)64