MC68HC05X4 Datasheet, PDF (60/156 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Memory
Freescale Semiconductor, Inc.
MCU registers
Table 1. MC68HC05X4 and MC68HC705X4 register assignments
Register Name
Address Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
State on
Reset
Port A data/WOI enable (PADAT) $0000
Undefined/
cleared
Port B data (PBDAT)
$0001
Undefined
(Reserved)
Port configuration (PCR)
$0003
WOIF TIMEN CAF BPDE BWIE AWPS - - 00 0000
Port A DDR/
Pull-down enable (PADDDR)
$0004
0000 0000
Port B DDR (PBDDR)
$0005
0000 0000
(Reserved)
Core timer control & status
(CTCSR)
$0008 CTOF RTIF CTOFE RTIE 0
0 RT1 RT0 uu00 0011
Core timer counter (CTCR) $0009
0000 0000
(Reserved)
Timer control (TCR)
$0012 ICIE OCIE TOIE 0
0
0 IEDG OLVL 0000 00u0
Timer status (TSR)
$0013 ICF OCF TOF 0
0
0
0
0 uuu0 0000
Input capture high
$0014 (bit 15)
(bit 8) Undefined
Input capture low
$0015
Undefined
Output compare high
$0016 (bit 15)
(bit 8) Undefined
Output compare low
$0017
Undefined
Counter high
$0018 (bit 15)
(bit 8) 1111 1111
Counter low
$0019
1111 1100
Alternate counter high
$001A (bit 15)
(bit 8) 1111 1111
Alternate counter low
$001B
1111 1100
EPROM programming (EPROG) $001C 0
0
0
0
0 ELAT 0 EPGM 0000 0000
u = Undefined
-=
Unimplemented
NOTE: Shaded areas represent either unimplemented bits or reserved bits
where stated.
MC68HC05X4 Rev 1.0
Memory
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