AN1212 Freescale Semiconductor / Motorola, AN1212 Datasheet - Page 7

• Manufacturer Part Number: AN1212
• Description: J1850 Multiplex Bus Communication Using the MC68HC705C8 and the SC371016 J1850 Communications Interface (JCI)
• Manufacturer: Freescale Semiconductor / Motorola

MOTOROLA
$1FDE
$1EFF
$1FDF
$1FEF
$1FFE
$00BF
$00C0
$1FE0
$001F
$004F
$00FF
$015F
$1F00
$1FF0
$1FF3
$1FF4
$0000
$0020
$0050
$0100
$0160
RAM0 = 0
RAM1 = 0
BYTES
BYTES
USER
USER
ROM
ROM
OPTION REGISTER
BOOTSTRAP ROM
UNUSED 4 BYTES
48
96
BOOTSTRAP
USER PROM
INCLUDING
7584 BYTES
REGISTERS
176 BYTES
64 BYTES
223 BYTES
VECTORS
12 BYTES
32 BYTES
VECTORS
8K USER
16 BYTES
STACK
I/O AND
PROM
RAM
ROM
J1850 Multiplex Bus Communication Using the MC68HC705C8
16 BYTES
RAM0 = 1
RAM1 = 1
UNUSED
BYTES
BYTES
Figure 5. MC68HC705C8 Memory Address Map
RAM
RAM
and the SC371016 J1850 Communications Interface (JCI)
32
96
which can be programmed by the user to prevent an unauthorized dump of the
contents of the EPROM.
MC68HC705C8.
Freescale Semiconductor, Inc.
For More Information On This Product,
0000
0031
0032
0079
0080
0191
0192
0255
0256
0351
0352
7935
7936
8158
8159
8160
8175
8176
8179
8180
8191
Go to: www.freescale.com
Figure 5
shows the complete memory map of the
ALTERNATE COUNT REGISTER (HIGH)
OUTPUT COMPARE REGISTER (HIGH)
ALTERNATE COUNT REGISTER (LOW)
OUTPUT COMPARE REGISTER (LOW)
PORT A DATA DIRECTION REGISTER
PORT B DATA DIRECTION REGISTER
PORT C DATA DIRECTION REGISTER
INPUT CAPTURE REGISTER (HIGH)
INPUT CAPTURE REGISTER (LOW)
TIMER COUNT REGISTER (HIGH)
TIMER COUNT REGISTER (LOW)
PORT D INPUT DATA REGISTER
TIMER CONTROL REGISTER
SCI BAUD RATE RAGIETER
SCI CONTROL REGISTER 1
SCI CONTROL REGISTER 2
TIMER STATUS REGISTER
COP CONTROL REGISTER
PORT A DATA REGISTER
PORT B DATA REGISTER
PORT C DATA REGISTER
SPI CONTROL REGISTER
SCI STATUS REGISTER
SPI STATUS REGISTER
COP RESET REGISTER
RESET VECTOR (HIGH)
TIMER VECTOR (HIGH)
RESET VECTOR (LOW)
TIMER VECTOR (LOW)
SPI DATA REGISTER
SCI DATA REGISTER
SWI VECTOR (HIGH)
SCI VECTOR (HIGH)
IRQ VECTOR (HIGH)
SWI VECTOR (LOW)
SPI VECTOR (HIGH)
SCI VECTOR (LOW)
IRQ VECTOR (LOW)
SPI VECTOR (LOW)
UNUSED
UNUSED
UNUSED
UNUSED
MC68HC705C8 Microcontroller
$00
$01
$02
$03
$04
$05
$06
$07
$08
$09
$0A
$0B
$0C
$0D
$0E
$0F
$10
$11
$12
$13
$14
$15
$16
$17
$18
$19
$1A
$1B
$1C
$1D
$1F
$1FF4
$1FF5
$1FF6
$1FF7
$1FF8
$1FF9
$1FFA
$1FFB
$1FFC
$1FFD
$1FFE
$1FFF
AN1212/D
7