MC68HC705J2 Datasheet, PDF (38/82 Pages) Freescale Semiconductor, Inc – member of the low-cost

Freescale Semiconductor, Inc.
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$0000
$001F
$0020
$008F
$0090
I/O REGISTERS
32 BYTES
UNUSED
112 BYTES
$00BF
$00C0
SRAM
112 BYTES
$00FF
$0100
STACK
64 BYTES
UNUSED
1536 BYTES
$06FF
$0700
USER EPROM
2048 BYTES
PORT A DATA REGISTER
PORT B DATA REGISTER
UNUSED
UNUSED
PORT A DATA DIRECTION REGISTER
PORT B DATA DIRECTION REGISTER
UNUSED
UNUSED
TIMER CONTROL AND STATUS REGISTER
TIMER COUNTER REGISTER
UNUSED
•
•
•
UNUSED
EPROM PROGRAMMING REGISTER
UNUSED
UNUSED
RESERVED
$0000
$0001
$0002
$0003
$0004
$0005
$0006
$0007
$0008
$0009
$000A
•
•
•
$001B
$001C
$001D
$001E
$001F
$0EFF
$0F00
$0F01
MASK OPTION REGISTER
BOOTLOADER ROM
239 BYTES
$0FEF
$0FF0
$0FFF
USER VECTORS
(EPROM)
16 BYTES
COP REGISTER _*
USER
EPROM
8 BYTES
TIMER INTERRUPT VECTOR (HIGH)
TIMER INTERRUPT VECTOR (LOW)
EXTERNAL INTERRUPT VECTOR (HIGH)
EXTERNAL INTERRUPT VECTOR (LOW)
SOFTWARE INTERRUPT VECTOR (HIGH)
SOFTWARE INTERRUPT VECTOR (LOW)
RESET VECTOR (HIGH)
RESET VECTOR (LOW)
*WRITING 0 TO BIT 0 OF $0FF0 CLEARS
COP TIMER. READING $0FF0 RETURNS
USER EPROM DATA.
$0FF0
•
•
•
$0FF7
$0FF8
$0FF9
$0FFA
$0FFB
$0FFC
$0FFD
$0FFE
$0FFF
Figure 6-1. Memory Map
MEMORY
6-2
Rev. 2
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