MC68HC11EA9 Datasheet, PDF (13/58 Pages) Motorola, Inc – 8 BIT HCMOS SINGLE CHIP MICROCONTOROLLER WITH A/D CONVERTER

Freescale Semiconductor, Inc.
$0000
EXT
$1000
EXT
0000
512 BYTES RAM
EXT
01FF
1000
64-BYTE REGISTER BLOCK
EXT
103F
$B600
$D000
$FFFF
SINGLE
CHIP
B600
512 BYTES EEPROM
B7FF
EXT
EXT
BF00
BOOT
ROM
BFC0 _{SPECIAL MODES}
INTERRUPT
BFFF
BFFF ^VECTORS
D000 12 KBYTES ROM/EPROM
EXPANDED BOOTSTRAP
SPECIAL
TEST
FFFF
Figure 6 MC68HC(7)11EA9 Memory Map
FFC0
FFFF
NORMAL
MODES
INTERRUPT
VECTORS
EA9 MEM MAP
INIT — RAM and I/O Mapping Register
RESET:
BIT 7
RAM3
0
6
RAM2
0
5
RAM1
0
4
RAM0
0
3
REG3
0
2
REG2
0
1
REG1
0
BIT 0
REG0
1
$103D
RAM[3:0] — RAM Map Position
These four bits, which specify the upper hexadecimal digit of the RAM address, control position of RAM
in the memory map. RAM can be positioned at the beginning of any 4 Kbyte page in the memory map.
It is initialized to address $0000 out of reset.
REG[3:0] — 64-Byte Register Block Position
These four bits specify the upper hexadecimal digit of the address for the 64-byte block of internal reg-
isters. The register block, positioned at the beginning of any 4 Kbyte page in the memory map, is initial-
ized to address $1000 out of reset.
MC68HC11EA9
MC68HC11EA9TS/D
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