MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 38

• Manufacturer Part Number: MC68HC705V12CFN
• Description: The Motorola microcontroller
• Manufacturer: MOTOROLA [Motorola, Inc]

Memory Map
2.3 I/O and Control Registers
Advance Information
38
*Reading $3FF0 returns the gauge vector EPROM byte.
Writing a 0 to $3FF0, bit 0, resets the COP.
$01BF
$3BFF
$3C00
$0CFF
$3FEF
$3FFF
$003F
$00FF
$0240
$0D00
$3FF0
$0000
$0040
$0100
$033F
$0340
Figure 2-1. MC68HC705V12 Single-Chip Mode Memory Map
MASK OPTION REGISTER
BOOTLOADER/ FACTORY
USER VECTORS EPROM
TEST CODE ROM
1008 BYTES
USER EEPROM
12,032 BYTES
USER EPROM
USER RAM
128 BYTES
UNUSED
256 BYTES
2496 BYTES
64 BYTES
USER RAM
192 BYTES
16 BYTES
UNUSED
I/O
The I/O and control registers reside in locations $0000–$003F. The
overall organization of these registers is shown in
assignments for each register are shown in
unimplemented bits will return unknown states, and writing to
unimplemented bits will be ignored.
STACK RAM
64 BYTES
0576
15359
15360
0831
0832
0000
0063
0064
0255
0256
0447
3327
3328
16367
16368
16383
Memory Map
16-BIT TIMER VECTOR (HIGH BYTE)
16-BIT TIMER VECTOR (LOW BYTE)
8-BIT TIMER VECTOR (HIGH BYTE)
8-BIT TIMER VECTOR (LOW BYTE)
*GAUGE VECTOR (HIGH BYTE)/
RESET VECTOR (HIGH BYTE)
GAUGE VECTOR (LOW BYTE)
RESET VECTOR (LOW BYTE)
BDLC VECTOR (HIGH BYTE)
BDLC VECTOR (LOW BYTE)
SWI VECTOR (HIGH BYTE)
IRQ VECTOR (HIGH BYTE)
SWI VECTOR (LOW BYTE)
SPI VECTOR (HIGH BYTE)
IRQ VECTOR (LOW BYTE)
SPI VECTOR (LOW BYTE)
COP WATCHDOG TIMER
Figure
SEE
REGISTERS
64 BYTES
MC68HC705V12
Figure 2-2
I/O
Figure
2-3. Reading from
2-2. The bit
MOTOROLA
$3FFC
$3FFD
$3FF0
$3FF1
$3FF2
$3FF3
$3FF4
$3FF5
$3FF6
$3FF7
$3FF8
$3FF9
$3FFA
$3FFB
$3FFE
$3FFF
$0000
$003F
—
Rev. 3.0