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MC68HC05C8A Datasheet, PDF (114/116 Pages) Motorola, Inc – Microcontrollers
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Table C-1. M68HC05Cx Feature Comparison
C4
C4A
705C4A
C8
C8A
705C8
705C8A
C12
C12A
C9
C9A
705C9
705C9A
USER ROM
4160
4160
—
7744
7744
—
—
12,096
12,096
15,760–15,936 15,760–15,936
—
—
USER EPROM
—
—
4160
—
—
7596–7740
7596–7740
—
—
—
—
15,760–15,936 12,096–15,936
CODE
SECURITY
NO
YES
YES
NO
YES
YES
YES
NO
YES
NO
YES
NO
YES
RAM
176
176
176
176
176
176–304
176–304
176
176
176–352
176–352
176–352
176–352
OPTION
REGISTER
(IRQ/RAM/
NO
SEC)
NO
$1FDF
(IRQ/SEC)
NO
NO
$1FDF
(IRQ/RAM/
SEC)
$1FDF
(IRQ/RAM/SEC)
NO
NO
$3FDF
(IRQ/RAM)
$3FDF
(IRQ/RAM)
$3FDF
(IRQ/RAM)
$3FDF
(IRQ/RAM)
MASK OPTION
REGISTER(S)
NO
NO
$1FF0–1
NO
NO
NO
$1FF0–1
NO
NO
NO
NO
NO
$3FF0–1
PORTB
KEYSCAN
(PULLUP/
NO
INTERRUPT)
YES
YES
MASK MOR SELECT- NO
OPTION
ABLE
YES
MASK
OPTION
YES
YES
YES
NO
MOR
MASK
MASK
SELECTABLE
OPTION
OPTION
NO
YES
MASK
OPTION
YES
NO
MOR
SELECTABLE
PC7 DRIVE
STANDARD
HIGH
CURRENT
HIGH
CURRENT
STANDARD
HIGH
CURRENT
STANDARD
HIGH
CURRENT
HIGH
CURRENT
HIGH
CURRENT
STANDARD
HIGH
CURRENT
STANDARD
HIGH
CURRENT
PORT D
PD7, 5–0 PD7, 5–0 PD7, 5–0 PD7, 5–0
PD7, 5–0
PD7, 5–0
INPUT ONLY INPUT ONLY INPUT ONLY INPUT ONLY INPUT ONLY INPUT ONLY
PD7, 5–0
INPUT ONLY
PD7, 5–0
PD7, 5–0
INPUT ONLY INPUT ONLY
PD7, 5–0
BIDIREC-
TIONAL
PD7, 5–0
BIDIREC-
TIONAL
PD7, 5–0
BIDIREC-
TIONAL
PD7, 5–0
BIDIRECTIONAL
COP
NO
YES
YES
NO
YES
YES
TWO TYPES
YES
YES
YES
YES
YES
TWO TYPES
COP ENABLE
—
MASK
OPTION
MOR
—
MASK
OPTION
SOFTWARE
SOFTWARE+
MOR
MASK
OPTION
MASK
OPTION
SOFTWARE
SOFTWARE
SOFTWARE
SOFTWARE+
MOR
COP TIMEOUT
—
64 ms
(@4 MHz
osc)
64 ms
(@4 MHz osc)
—
64 ms
SOFTWARE
(@4 MHz osc) SELECTABLE
SOFTWARE+
MOR
SELECTABLE
64 ms
64 ms
(@4 MHz osc) (@4MHz osc)
SOFTWARE
SELECTABLE
SOFTWARE
SELECTABLE
SOFTWARE
SELECTABLE
SOFTWARE+
MOR
SELECTABLE
COP CLEAR
—
CLR $1FF0 CLR $1FF0
—
CLR $1FF0
WRITE $55/$AA
TO $001D
WRITE $55/$AA
TO $001D
OR
CLR $1FF0
CLR $3FF0
CLR $3FF0
WRITE $55/$AA
TO $001D
WRITE $55/$AA WRITE $55/$AA
TO $001D
TO $001D
WRITE $55/$AA
TO $001D
OR
CLR $3FF0
CLOCK
MONITOR
NO
NO
NO
NO
NO
YES
YES
NO
NO
YES
YES
YES
YES
(C9A MODE)
ACTIVE
RESET
NO
NO
NO
NO
PROGRAM-
NO
COP/CLOCK
MONITOR
MABLE
COP/CLOCK
NO
MONITOR
POR/COP/
POR/COP/
POR/COP/ POR/C9A COP/
NO
CLOCK
CLOCK
CLOCK
CLOCK
MONITOR
MONITOR
MONITOR
MONITOR
STOP DISABLE
NO
MASK
OPTION
NO
NO
MASK
OPTION
NO
MOR
NO
MASK
OPTION
MASK
OPTION
NO
NO
NO
SELECTABLE
(C12A MODE)
NOTES:
1. The expanded RAM map (from $30–$4F and $100–$15F) available on the OTP devices MC68HC705C8 and MC68HC705C8A is not available on the ROM devices MC68HC05C8 and
MC68HC05C8A.
2. The programmable COP available on the MC68HC705C8 and MC68HC705C8A is not available on the MC68HC05C8A. For ROM compatibility, use the non-programmable COP.
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