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M68HC08 Datasheet(PDF) 44 Page - Freescale Semiconductor, Inc

Part # M68HC08
Description  MC68HC908JB16 Technical Data
PDF  332 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC08 Datasheet(HTML) 44 Page - Freescale Semiconductor, Inc

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Memory Map
Technical Data
MC68HC908JB16 — Rev. 1.1
44
Memory Map
Freescale Semiconductor
Addr.
Register Name
Bit 7
654321
Bit 0
$0000
Port A Data Register
(PTA)
Read:
PTA7
PTA6
PTA5
PTA4
PTA3
PTA2
PTA1
PTA0
Write:
Reset:
Unaffected by reset
$0001
Reserved
Read:
RRRRRRRR
Write:
Reset:
$0002
Port C Data Register
(PTC)
Read:
000000
PTC1
PTC0
Write:
Reset:
Unaffected by reset
$0003
Port D Data Register
(PTD)
Read:
0
0
PTD5
PTD4
PTD3
PTD2
PTD1
PTD0
Write:
Reset:
Unaffected by reset
$0004
Data Direction Register A
(DDRA)
Read:
DDRA7
DDRA6
DDRA5
DDRA4
DDRA3
DDRA2
DDRA1
DDRA0
Write:
Reset:
0*
0000000
* DDRA7 bit is reset by POR or LVI reset only.
$0005
Reserved
Read:
RRRRRRRR
Write:
Reset:
$0006
Data Direction Register C
(DDRC)
Read:
000000
DDRC1
DDRC0
Write:
Reset:
00000000
$0007
Data Direction Register D
(DDRD)
Read:
0
0
DDRD5
DDRD4
DDRD3
DDRD2
DDRD1
DDRD0
Write:
Reset:
00000000
$0008
Port E Data Register
(PTE)
Read:
0
0
0
PTE4
PTE3
PTE2
PTE1
PTE0
Write:
Reset:
Unaffected by reset
$0009
Data Direction Register E
(DDRE)
Read:
0
0
0
DDRE4
DDRE3
DDRE2
DDRE1
DDRE0
Write:
Reset:
00000000
U = Unaffected
X = Indeterminate
= Unimplemented
R
= Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 12)



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