MC68HC11KW1 Datasheet, PDF (59/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

4.3.2.3 INIT2 — EEPROM mapping register
EEPROM mapping (INIT2)
Address bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$0037 EE3 EE2 EE1 EE0 0
0
0
0 0000 0000
This register determines the location of EEPROM in the memory map. INIT2 may be read at any
time but bits 7–4 may be written only once after reset in normal modes.
4
EE[3:0] — EEPROM map position
EEPROM is located at $xD80–$xFFF, where x is the hexadecimal digit represented by EE[3:0].
Refer to Table 4-6.
Table 4-6 EEPROM remapping
EE[3:0] Location EE[3:0] Location EE[3:0] Location EE[3:0] Location
0000
$0D80–$0FFF
0100
$4D80–$4FFF
1000
$8D80–$8FFF
1100
$CD80–$CFF
F
0001
$1D80–$1FFF
0101
$5D80–$5FFF
1001
$9D80–$9FFF
1101
$DD80–$DFF
F
0010
$2D80–$2FFF
0110
$6D80–$6FFF 1010
$AD80–$AFF
F
1110
$ED80–$EFF
F
0011
$3D80–$3FFF
0111
$7D80–$7FFF 1011
$BD80–$BFF
F
1111 $FD80–$FFFF
Bits [3:0] — Not implemented; always read zero.
4.3.2.4 OPTION — System configuration options register 1
Address bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
System config. options 1 (OPTION) $0039 ADPU CSEL IRQE DLY CME FCME CR1 CR0 0001 0000
The 8-bit special-purpose OPTION register sets internal system configuration options during
initialization. The time protected control bits IRQE, DLY, FCME and CR[1:0] can be written only
once in the first 64 cycles after a reset and then they become read-only bits. This minimizes the
possibility of any accidental changes to the system configuration. They may be written at any time
in special modes.
MC68HC11KW1
OPERATING MODES AND ON-CHIP MEMORY
4-15