Reference Guide
M68HC11ERG/AD
Rev. 2, 10/2003
M68HC11E Series
Programming
Reference Guide
Block Diagram
XTAL EXTAL
E
IRQ
OSC
INTERRUPT
LOGIC
MODE CONTROL
ROM OR EPROM
(SEE TABLE)
EEPROM
(SEE TABLE)
M68HC11 CPU
RAM
(SEE TABLE)
STROBE AND HANDSHAKE
PARALLEL I/O
SERIAL
COMMUNICATION
INTERFACE
SCI
SERIAL
PERIPHERAL
INTERFACE
SPI
VDD
VSS
VRH
VRL
TxD
RxD
ADDRESS/DATA
SS
SCK
MOSI
MISO
BUS EXPANSION
ADDRESS
R/W
AS
PULSE ACCUMULATOR
COP
PAI
OC2
OC3
OC4
OC5/IC4/OC1
IC1
IC2
PERIODIC INTERRUPT
IC3
CLOCK LOGIC
TIMER
SYSTEM
XIRQ/VPPE* RESET
STRB
STRA
MODA/ MODB/
LIR
VSTBY
A/D CONVERTER
* VPPE applies only to devices with EPROM/OTPROM.
DEVICE
MC68HC11E0
MC68HC11E1
MC68HC11E9
MC68HC711E9
MC68HC11E20
MC68HC711E20
MC68HC811E2
RAM
512
512
512
512
768
768
256
PE7/AN7
PE6/AN6
PE5/AN5
PE4/AN4
PE3/AN3
PE2/AN2
PE1/AN1
PE0/AN0
PORT E
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TxD
PD0/RxD
STRA/AS
PORT C
STRB/R/W
PORT B
PC7/ADDR7/DATA7
PC6/ADDR6/DATA6
PC5/ADDR5/DATA5
PC4/ADDR4/DATA4
PC3/ADDR3/DATA3
PC2/ADDR2/DATA2
PC1/ADDR1/DATA1
PC0/ADDR0/DATA0
PORT D
PORT A
PB7/ADDR15
PB6/ADDR14
PB5/ADDR13
PB4/ADDR12
PB3/ADDR11
PB2/ADDR10
PB1/ADDR9
PB0/ADDR8
CONTROL
PA7/PAI
PA6/OC2/OC1
PA5/OC3/OC1
PA4/OC4/OC1
PA3/OC5/IC4/OC1
PA2/IC1
PA1/IC2
PA0/IC3
CONTROL
ROM
—
—
12 K
—
20 K
—
—
EPROM
—
—
—
12 K
—
20 K
—
EEPROM
—
512
512
512
512
512
2048
© Motorola, Inc., 2003
M68HC11ERG/AD
Devices Covered in This Reference Guide
Device
RAM
ROM
EPROM
EEPROM
MC68HC11E0
512
—
—
—
MC68HC11E1
512
—
—
512
MC68HC11E9
512
12K
—
512
MC68HC711E9
512
—
12K
512
MC68HC11E20
768
20K
—
512
MC68HC711E20
768
—
10K
512
MC68HC811E2
256
—
—
2048
M68HC11E Series Programming Model
7
15
A
0
7
B
0
0
D
8-BIT ACCUMULATORS A & B
OR 16-BIT DOUBLE ACCUMULATOR D
IX
INDEX REGISTER X
IY
INDEX REGISTER Y
SP
STACK POINTER
PROGRAM COUNTER
PC
7
S
0
X
H
I
N
Z
V
C
CONDITION CODES
CARRY/BORROW FROM MSB
OVERFLOW
ZERO
NEGATIVE
I-INTERRUPT MASK
HALF CARRY (FROM BIT 3)
X-INTERRUPT MASK
STOP DISABLE
2
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Crystal Dependent Timer Summary
Crystal Dependent Timer Summary
Common XTAL Frequencies
Selected
Crystal
4.0 MHz
8.0 MHz
12.0 MHz
CPU Clock
(E)
1.0 MHz
2.0 MHz
3.0 MHz
Cycle Time
(1/E)
1000 ns
500 ns
333 ns
Pulse Accumulator (in Gated Mode)
(E/26)
(E/214)
1 count —
overflow —
64.0 µs
16.384 ms
PR[1:0]
21.330 µs
5.491 ms
Main Timer Count Rates
(E/1)
(E/216)
00
1 count—
overflow —
1.0 µs
65.536 ms
500 ns
32.768 ms
333 ns
21.845 ms
(E/4)
(E/218)
01
1 count—
overflow —
4.0 µs
262.14 ms
2.0 µs
131.07 ms
1.333 µs
87.381 ms
(E/8)
(E/219)
10
1 count—
overflow —
8.0 µs
524.29 ms
4.0 µs
262.14 ms
2.667 µs
174.76 ms
(E/16)
(E/220)
11
1 count—
overflow —
16.0 µs
1.049 s
8.0 µs
524.29 ms
5.333 µs
349.52 ms
RTR[1:0]
(E/213)
(E/214)
(E/215)
(E/216)
00
01
10
11
CR[1:0]
MOTOROLA
32.0 µs
8.192 ms
Periodic (RTI) Interrupt Rates
8.192 ms
16.384 ms
32.768 ms
65.536 ms
4.096 ms
8.192 ms
16.384 ms
32.768 ms
2.731 ms
5.461 ms
10.923 ms
21.845 ms
COP Watchdog Timeout Rates
(E/215)
(E/217)
(E/219)
(E/221)
00
01
10
11
32.768 ms
131.072 ms
524.288 ms
2.097 s
16.384 ms
65.536 ms
262.14 ms
1.049 s
10.923 ms
43.691 ms
174.76 ms
699.05 ms
(E/215)
Timeout
tolerance
(–0 ms/+...)
32.8 ms
16.4 ms
10.9 ms
M68HC11E Series Programming Reference Guide
3
M68HC11ERG/AD
Interrupt Vector Assignments
Vector
Address
Interrupt
Source
FFC0, C1 – FFD4, D5 Reserved
CCR
Mask Bit
Local
Mask
—
—
FFD6, D7
SCI serial system(1)
• SCI receive data register full
• SCI receiver overrun
• SCI transmit data register empty
• SCI transmit complete
• SCI idle line detect
I
FFD8, D9
SPI serial transfer complete
I
SPIE
FFDA, DB
Pulse accumulator input edge
I
PAII
FFDC, DD
Pulse accumulator overflow
I
PAOVI
FFDE, DF
Timer overflow
I
TOI
FFE0, E1
Timer input capture 4/output compare 5
I
I4/O5I
FFE2, E3
Timer output compare 4
I
OC4I
FFE4, E5
Timer output compare 3
I
OC3I
FFE6, E7
Timer output compare 2
I
OC2I
FFE8, E9
Timer output compare 1
I
OC1I
FFEA, EB
Timer input capture 3
I
IC3I
FFEC, ED
Timer input capture 2
I
IC2I
FFEE, EF
Timer input capture 1
I
IC1I
FFF0, F1
Real-time interrupt
I
RTII
FFF2, F3
IRQ (external pin)
I
None
FFF4, F5
XIRQ pin
X
None
FFF6, F7
Software interrupt
None
None
FFF8, F9
Illegal opcode trap
None
None
FFFA, FB
COP failure
None
NOCOP
FFFC, FD
Clock monitor fail
None
CME
FFFE, FF
RESET
None
None
RIE
RIE
TIE
TCIE
ILIE
1. Interrupts generated by SCI; read SCSR to determine source. Refer to HPRIO register to
determine priority of interrupt.
4
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Memory Maps
M68HC11E Series Memory Maps
$0000
0000
512 BYTES RAM
EXT
EXT
$1000
01FF
1000
64-BYTE REGISTER BLOCK
103F
$B600
EXT
EXT
BF00
BOOT
ROM
BFC0
BFFF
BFFF
SPECIAL MODES
INTERRUPT
VECTORS
$D000
FFC0
FFFF
$FFFF
EXPANDED
BOOTSTRAP
NORMAL
MODES
INTERRUPT
VECTORS
SPECIAL
TEST
Figure 1. Memory Map for MC68HC11E0
0000
$0000
512 BYTES RAM
EXT
EXT
$1000
01FF
1000
EXT
EXT
103F
B600
$B600
64-BYTE REGISTER BLOCK
512 BYTES EEPROM
B7FF
EXT
BF00
BOOT
ROM
BFC0
EXT
BFFF
BFFF
SPECIAL MODES
INTERRUPT
VECTORS
$D000
FFC0
FFFF
$FFFF
EXPANDED
BOOTSTRAP
NORMAL
MODES
INTERRUPT
VECTORS
SPECIAL
TEST
Figure 2. Memory Map for MC68HC11E1
MOTOROLA
M68HC11E Series Programming Reference Guide
5
M68HC11ERG/AD
0000
$0000
512 BYTES RAM
EXT
EXT
$1000
01FF
1000
EXT
EXT
B600
$B600
64-BYTE REGISTER BLOCK
103F
512 BYTES EEPROM
B7FF
EXT
EXT
BF00
BOOT
ROM
BFFF
BFFF
$D000
D000
BFC0
12 KBYTES ROM/EPROM
FFC0
FFFF
FFFF
$FFFF
SINGLE
CHIP
EXPANDED
BOOTSTRAP
SPECIAL MODES
INTERRUPT
VECTORS
NORMAL
MODES
INTERRUPT
VECTORS
SPECIAL
TEST
Figure 3. Memory Map for MC68HC(7)11E9
0000
$0000
768 BYTES RAM
EXT
EXT
$1000
02FF
1000
EXT
EXT
9000
$9000
64-BYTE REGISTER BLOCK
103F
8 KBYTES ROM/EPROM *
AFFF
EXT
EXT
$B600
B600
512 BYTES EEPROM
B7FF
EXT
EXT
BF00
BOOT
ROM
BFFF
$D000
BFC0 SPECIAL MODES
INTERRUPT
VECTORS
BFFF
D000 12 KBYTES ROM/EPROM *
FFC0
$FFFF
FFFF
FFFF
NORMAL
MODES
INTERRUPT
VECTORS
SINGLE
BOOTSTRAP
SPECIAL
EXPANDED
CHIP
TEST
* 20 Kbytes ROM/EPROM are contained in two segments of 8 Kbytes and 12 Kbytes each.
Figure 4. Memory Map for MC68HC(7)11E20
6
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Memory Maps
$0000
0000
256 BYTES RAM
EXT
EXT
$1000
00FF
1000
64-BYTE REGISTER BLOCK
103F
EXT
EXT
BF00
BOOT
ROM
BFFF
BFC0 SPECIAL MODES
INTERRUPT
VECTORS
BFFF
2048 BYTES EEPROM
$F800
F800
FFFF
$FFFF
SINGLE
CHIP
EXPANDED
BOOTSTRAP
FFC0
FFFF
NORMAL
MODES
INTERRUPT
VECTORS
SPECIAL
TEST
Figure 5. Memory Map for MC68HC811E2
MOTOROLA
M68HC11E Series Programming Reference Guide
7
8
Opcode Maps
M68HC11ERG/AD
Page 1
DIR
ACCA
MSB
M68HC11E Series Programming Reference Guide
LSB
ACCB
INH
INH
REL
INH
ACCA
ACCB
IND,X
EXT
IMM
DIR
IND,X
EXT
IMM
DIR
IND,X
EXT
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0000
0
TEST
SBA
BRA
TSX
0001
1
NOP
CBA
BRN
0010
2
IDIV
BRSET
0011
3
EDIV
0100
4
0101
MOTOROLA
SUB
0
INS
CMP
1
BHI
PULA
SBC
2
BRCLR
BLS
PULB
COM
LSRD
BSET
BCC
DES
LSR
5
ASLD
BCLR
BCS
TXS
0110
6
TAP
TAB
BNE
PSHA
ROR
0111
7
TPA
TBA
BEQ
PSHB
ASR
1000
8
INX
PAGE 2
BVC
PULX
ASL
EOR
8
1001
9
DEX
DAA
BVS
RTS
ROL
ADC
9
1010
A
CLV
PAGE 3
BPL
ABX
DEC
ORA
A
1011
B
SEV
ABA
BMI
RTI
ADD
B
1100
C
CLC
BSET
BGE
PSHX
INC
1101
D
SEC
BCLR
BLT
MUL
TST
1110
E
CLI
BRSET
BGT
WAI
1111
F
SEI
BRCLR
BLE
SWI
0
1
2
3
IND,X
NEG
SUBD
BIT
5
LDA
6
STA
JSR
XGDX
6
7
8
PAGE 4
C
STD
D
LDX
STS
9
7
LDD
LDS
CLR
5
4
CPX
BSR
3
AND
STA
JMP
4
ADDD
A
STOP
B
C
E
STX
D
E
F
F
MOTOROLA
Page 2 (18XX)
ACCA
INH
MSB
LSB
M68HC11E Series Programming Reference Guide
0000
0
0001
INH
IND,Y
ACCB
IMM
DIR
IND,X
EXT
IMM
DIR
IND,X
EXT
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
TSY
NEG
SUB
SUB
0
1
CMP
CMP
1
0010
2
SBC
SBC
2
0011
3
COM
SUBD
ADDD
3
0100
4
LSR
AND
AND
4
0101
5
BIT
BIT
5
0110
6
ROR
LDA
LDA
6
0111
7
ASR
STA
STA
7
1000
8
INY
ASL
EOR
EOR
8
1001
9
DEY
RDL
ADC
ADC
9
1010
A
DEC
ORA
ORA
A
1011
B
ADD
ADD
B
1100
C
BSET
LDD
C
1101
D
BCLR
TST
JSR
STD
D
1110
E
BRSET
JMP
LDS
1111
F
BRCLR
CLR
TYS
PULY
ABY
0
1
PSHY
2
4
5
6
CPY
XGDY
7
8
LDY
STS
9
A
E
STY
B
C
D
E
F
F
9
M68HC11ERG/AD
Opcode Maps
IND,Y
3
INC
10
Page 3 (1AXX)
MSB
LSB
M68HC11ERG/AD
ACCA
ACCB
IMM
DIR
IND,X
EXT
IND,X
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
M68HC11E Series Programming Reference Guide
0000
0
0
0001
1
1
0010
2
2
0011
3
0100
4
4
0101
5
5
0110
6
6
0111
7
7
1000
8
8
1001
9
9
1010
A
A
1011
B
B
1100
C
1101
D
1110
E
LDY
E
1111
F
STY
F
CPD
3
CPY
C
D
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
MOTOROLA
MOTOROLA
Page 4 (CDXX)
ACCA
ACCB
IND,Y
MSB
LSB
IND,Y
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
M68HC11E Series Programming Reference Guide
0000
0
0
0001
1
1
0010
2
2
0011
3
0100
4
4
0101
5
5
0110
6
6
0111
7
7
1000
8
8
1001
9
9
1010
A
A
1011
B
B
1100
C
1101
D
1110
E
LDX
E
1111
F
STX
F
CPD
3
CPX
C
D
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
11
M68HC11ERG/AD
Opcode Maps
0
M68HC11ERG/AD
Simple Branches
Mnemonic
Opcode
Cycles
BRA
20
3
BRN
21
3
BSR
8D
7
Simple Conditional Branches
Test
True
False
Instruction
Opcode
Instruction
Opcode
N=1
BMI
Z=1
BEQ
2B
BPL
2A
27
BNE
26
V=1
BVS
C=1
BCS
29
BVC
28
25
BCC
24
Instruction
Opcode
Instruction
Opcode
r>m
BGT
2E
BLE
2F
Signed Conditional Branches
Test
True
False
r≥m
BGE
2C
BLT
2D
r=m
BEQ
27
BNE
26
r≤m
BLE
2F
BGT
2E
r<m
BLT
2D
BGE
2C
Unsigned Conditional Branches
Test
True
Instruction
False
Opcode
Instruction
Opcode
r>m
BHI
22
BLS
23
r≥m
BHS/BCC
24
BL0/BCS
25
r=m
BEQ
27
BNE
26
r≤m
BLS
23
BHI
22
r<m
BLO/BCS
25
BHS/BCC
24
Bit Manipulation Branches
BRCLR
Branch if all selected bits are clear (opcode) (operand addr) (mask)
(rel offset)
M • mm = 0? M = operand in memory; mm = mask
BRSET
Branch if all selected bits are set (opcode) (operand addr) (rel offset)
(M) • mm = 0? M = operand in memory; mm = mask
12
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Instruction Set
Instruction Set
Refer to Table 1, which shows all the M68HC11 instructions in all possible
addressing modes. For each instruction, the table shows the operand
construction, the number of machine code bytes, and execution time in
CPU E-clock cycles.
Table 1. Instruction Set (Sheet 1 of 8)
Addressing
Mode
Mnemonic
Operation
Description
ABA
Add
Accumulators
A+B⇒A
INH
ABX
Add B to X
IX + (00 : B) ⇒ IX
INH
ABY
Add B to Y
IY + (00 : B) ⇒ IY
INH
ADCA (opr)
Add with Carry
to A
A+M+C⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ADCB (opr)
Add with Carry
to B
B+M+C⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ADDA (opr)
Add Memory to
A
A+M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ADDB (opr)
Add Memory to
B
B+M⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ADDD (opr)
Add 16-Bit to D
D + (M : M + 1) ⇒ D
ANDA (opr)
AND A with
Memory
A•M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ANDB (opr)
AND B with
Memory
B•M⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ASL (opr)
Arithmetic Shift
Left
C
ASLA
C
ASLB
b0
b7
b0
Arithmetic Shift
Left B
C
ASLD
b7
Arithmetic Shift
Left A
b7
b0
Arithmetic Shift
Left D
IMM
DIR
EXT
IND,X
IND,Y
EXT
IND,X
IND,Y
0
Instruction
Opcode
Condition Codes
Operand
Cycles
S
X
H
I
N
Z
V
C
1B
—
2
—
—
∆
—
∆
∆
∆
∆
3A
—
3
—
—
—
—
—
—
—
—
18
3A
—
4
—
—
—
—
—
—
—
—
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
∆
—
∆
∆
∆
∆
18
89
99
B9
A9
A9
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
∆
—
∆
∆
∆
∆
18
C9
D9
F9
E9
E9
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
∆
—
∆
∆
∆
∆
18
8B
9B
BB
AB
AB
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
∆
—
∆
∆
∆
∆
18
CB
DB
FB
EB
EB
jj kk
dd
hh ll
ff
ff
4
5
6
6
7
—
—
—
—
∆
∆
∆
∆
18
C3
D3
F3
E3
E3
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
84
94
B4
A4
A4
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
C4
D4
F4
E4
E4
hh ll
ff
ff
6
6
7
—
—
—
—
∆
∆
∆
∆
18
78
68
68
A
INH
48
—
2
—
—
—
—
∆
∆
∆
∆
B
INH
58
—
2
—
—
—
—
∆
∆
∆
∆
INH
05
—
3
—
—
—
—
∆
∆
∆
∆
0
0
0
C b7 A b0 b7 B b0
MOTOROLA
M68HC11E Series Programming Reference Guide
13
M68HC11ERG/AD
Table 1. Instruction Set (Sheet 2 of 8)
Addressing
Mode
Mnemonic
Operation
Description
ASR
Arithmetic Shift
Right
ASRA
Arithmetic Shift
Right A
ASRB
Arithmetic Shift
Right B
BCC (rel)
Branch if Carry
Clear
?C=0
BCLR (opr)
(msk)
Clear Bit(s)
M • (mm) ⇒ M
BCS (rel)
Branch if Carry
Set
?C=1
BEQ (rel)
Branch if = Zero
?Z=1
BGE (rel)
Branch if ∆ Zero
?N⊕V=0
BGT (rel)
Branch if > Zero
? Z + (N ⊕ V) = 0
BHI (rel)
Branch if
Higher
BHS (rel)
b7
b0
EXT
IND,X
IND,Y
C
Instruction
Opcode
18
77
67
67
Operand
hh ll
ff
ff
Condition Codes
Cycles
S
X
H
I
N
Z
V
C
6
6
7
—
—
—
—
∆
∆
∆
∆
A
INH
47
—
2
—
—
—
—
∆
∆
∆
∆
B
INH
57
—
2
—
—
—
—
∆
∆
∆
∆
REL
24
rr
3
—
—
—
—
—
—
—
—
DIR
IND,X
IND,Y
15
1D
1D
dd mm
ff mm
ff mm
6
7
8
—
—
—
—
∆
∆
0
—
25
rr
3
—
—
—
—
—
—
—
—
REL
27
rr
3
—
—
—
—
—
—
—
—
REL
2C
rr
3
—
—
—
—
—
—
—
—
REL
2E
rr
3
—
—
—
—
—
—
—
—
?C+Z=0
REL
22
rr
3
—
—
—
—
—
—
—
—
Branch if
Higher or Same
?C=0
REL
24
rr
3
—
—
—
—
—
—
—
—
BITA (opr)
Bit(s) Test A
with Memory
A•M
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
85
95
B5
A5
A5
BITB (opr)
Bit(s) Test B
with Memory
B•M
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
C5
D5
F5
E5
E5
BLE (rel)
Branch if ∆ Zero
? Z + (N ⊕ V) = 1
REL
2F
rr
3
—
—
—
—
—
—
—
—
BLO (rel)
Branch if Lower
?C=1
REL
25
rr
3
—
—
—
—
—
—
—
—
BLS (rel)
Branch if Lower
or Same
?C+Z=1
REL
23
rr
3
—
—
—
—
—
—
—
—
BLT (rel)
Branch if < Zero
?N⊕V=1
REL
2D
rr
3
—
—
—
—
—
—
—
—
BMI (rel)
Branch if Minus
?N=1
REL
2B
rr
3
—
—
—
—
—
—
—
—
BNE (rel)
Branch if not =
Zero
?Z=0
REL
26
rr
3
—
—
—
—
—
—
—
—
b7
b7
b0
b0
C
C
18
REL
BPL (rel)
Branch if Plus
?N=0
REL
2A
rr
3
—
—
—
—
—
—
—
—
BRA (rel)
Branch Always
?1=1
REL
20
rr
3
—
—
—
—
—
—
—
—
BRCLR(opr)
(msk)
(rel)
Branch if
Bit(s) Clear
? M • mm = 0
DIR
IND,X
IND,Y
13
1F
1F
dd mm rr
ff mm rr
ff mm rr
6
7
8
—
—
—
—
—
—
—
—
BRN (rel)
Branch Never
?1=0
REL
21
rr
3
—
—
—
—
—
—
—
—
BRSET(opr)
(msk)
(rel)
Branch if Bit(s)
Set
? (M) • mm = 0
DIR
IND,X
IND,Y
dd mm rr
ff mm rr
ff mm rr
6
7
8
—
—
—
—
—
—
—
—
18
12
1E
1E
BSET (opr)
(msk)
Set Bit(s)
M + mm ⇒ M
DIR
IND,X
IND,Y
dd mm
ff mm
ff mm
6
7
8
—
—
—
—
∆
∆
0
—
18
14
1C
1C
BSR (rel)
Branch to
Subroutine
See Figure 3–2
REL
8D
rr
6
—
—
—
—
—
—
—
—
BVC (rel)
Branch if
Overflow Clear
?V=0
REL
28
rr
3
—
—
—
—
—
—
—
—
14
18
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Instruction Set
Table 1. Instruction Set (Sheet 3 of 8)
Addressing
Mode
Instruction
Mnemonic
Operation
Description
BVS (rel)
Branch if
Overflow Set
?V=1
REL
29
CBA
Compare A to B
A–B
INH
11
CLC
Clear Carry Bit
0⇒C
INH
0C
CLI
Clear Interrupt
Mask
0⇒I
INH
0E
CLR (opr)
Clear Memory
Byte
0⇒M
EXT
IND,X
IND,Y
7F
6F
6F
CLRA
Clear
Accumulator A
0⇒A
A
INH
4F
CLRB
Clear
Accumulator B
0⇒B
B
INH
CLV
Clear Overflow
Flag
0⇒V
CMPA (opr)
Compare A to
Memory
A–M
CMPB (opr)
Compare B to
Memory
B–M
COM (opr)
Ones
Complement
Memory Byte
$FF – M ⇒ M
COMA
Ones
Complement
A
$FF – A ⇒ A
A
INH
43
COMB
Ones
Complement
B
$FF – B ⇒ B
B
INH
53
CPD (opr)
Compare D to
Memory 16-Bit
D–M:M +1
IMM
DIR
EXT
IND,X
IND,Y
CPX (opr)
Compare X to
Memory 16-Bit
IX – M : M + 1
CPY (opr)
Compare Y to
Memory 16-Bit
IY – M : M + 1
DAA
Decimal Adjust
A
Adjust Sum to BCD
DEC (opr)
Decrement
Memory Byte
M–1⇒M
DECA
Decrement
Accumulator
A
A–1⇒A
A
INH
4A
DECB
Decrement
Accumulator
B
B–1⇒B
B
INH
5A
MOTOROLA
S
X
H
I
N
Z
V
C
3
—
—
—
—
—
—
—
—
—
2
—
—
—
—
∆
∆
∆
∆
—
2
—
—
—
—
—
—
—
0
—
2
—
—
—
0
—
—
—
—
6
6
7
—
—
—
—
0
1
0
0
—
2
—
—
—
—
0
1
0
0
5F
—
2
—
—
—
—
0
1
0
0
INH
0A
—
2
—
—
—
—
—
—
0
—
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
81
91
B1
A1
A1
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
C1
D1
F1
E1
E1
hh ll
ff
ff
6
6
7
—
—
—
—
∆
∆
0
1
18
73
63
63
—
2
—
—
—
—
∆
∆
0
1
—
2
—
—
—
—
∆
∆
0
1
18
Operand
Condition Codes
Cycles
EXT
IND,X
IND,Y
Opcode
rr
hh ll
ff
ff
1A
1A
1A
1A
CD
83
93
B3
A3
A3
jj kk
dd
hh ll
ff
ff
5
6
7
7
7
—
—
—
—
∆
∆
∆
∆
IMM
DIR
EXT
IND,X
IND,Y
jj kk
dd
hh ll
ff
ff
4
5
6
6
7
—
—
—
—
∆
∆
∆
∆
CD
8C
9C
BC
AC
AC
IMM
DIR
EXT
IND,X
IND,Y
18
18
18
1A
18
8C
9C
BC
AC
AC
jj kk
dd
hh ll
ff
ff
5
6
7
7
7
—
—
—
—
∆
∆
∆
∆
2
—
—
—
—
∆
∆
∆
∆
6
6
7
—
—
—
—
∆
∆
∆
—
—
2
—
—
—
—
∆
∆
∆
—
—
2
—
—
—
—
∆
∆
∆
—
INH
19
EXT
IND,X
IND,Y
7A
6A
6A
18
—
hh ll
ff
ff
M68HC11E Series Programming Reference Guide
15
M68HC11ERG/AD
Table 1. Instruction Set (Sheet 4 of 8)
Addressing
Mode
Instruction
Mnemonic
Operation
Description
DES
Decrement
Stack Pointer
SP – 1 ⇒ SP
INH
DEX
Decrement
Index Register
X
IX – 1 ⇒ IX
INH
DEY
Decrement
Index Register
Y
IY – 1 ⇒ IY
INH
EORA (opr)
Exclusive OR A
with Memory
A⊕M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
EORB (opr)
Exclusive OR B
with Memory
B⊕M⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
FDIV
Fractional
Divide 16 by 16
D / IX ⇒ IX; r ⇒ D
INH
03
IDIV
Integer Divide
16 by 16
D / IX ⇒ IX; r ⇒ D
INH
02
INC (opr)
Increment
Memory Byte
M+1⇒M
EXT
IND,X
IND,Y
7C
6C
6C
INCA
Increment
Accumulator
A
A+1⇒A
A
INH
4C
INCB
Increment
Accumulator
B
B+1⇒B
B
INH
INS
Increment
Stack Pointer
SP + 1 ⇒ SP
INX
Increment
Index Register
X
INY
Condition Codes
Operand
Cycles
S
X
H
I
N
Z
V
C
34
—
3
—
—
—
—
—
—
—
—
09
—
3
—
—
—
—
—
∆
—
—
18
09
—
4
—
—
—
—
—
∆
—
—
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
88
98
B8
A8
A8
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
C8
D8
F8
E8
E8
—
41
—
—
—
—
—
∆
∆
∆
—
41
—
—
—
—
—
∆
0
∆
6
6
7
—
—
—
—
∆
∆
∆
—
—
2
—
—
—
—
∆
∆
∆
—
5C
—
2
—
—
—
—
∆
∆
∆
—
INH
31
—
3
—
—
—
—
—
—
—
—
IX + 1 ⇒ IX
INH
08
—
3
—
—
—
—
—
∆
—
—
Increment
Index Register
Y
IY + 1 ⇒ IY
INH
18
08
—
4
—
—
—
—
—
∆
—
—
JMP (opr)
Jump
See Figure 3–2
EXT
IND,X
IND,Y
hh ll
ff
ff
3
3
4
—
—
—
—
—
—
—
—
18
7E
6E
6E
JSR (opr)
Jump to
Subroutine
See Figure 3–2
DIR
EXT
IND,X
IND,Y
dd
hh ll
ff
ff
5
6
6
7
—
—
—
—
—
—
—
—
18
9D
BD
AD
AD
LDAA (opr)
Load
Accumulator
A
M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
86
96
B6
A6
A6
LDAB (opr)
Load
Accumulator
B
M⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
C6
D6
F6
E6
E6
LDD (opr)
Load Double
Accumulator
D
M ⇒ A,M + 1 ⇒ B
jj kk
dd
hh ll
ff
ff
3
4
5
5
6
—
—
—
—
∆
∆
0
—
18
CC
DC
FC
EC
EC
16
IMM
DIR
EXT
IND,X
IND,Y
Opcode
18
hh ll
ff
ff
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Instruction Set
Table 1. Instruction Set (Sheet 5 of 8)
Addressing
Mode
Mnemonic
Operation
Description
LDS (opr)
Load Stack
Pointer
M : M + 1 ⇒ SP
IMM
DIR
EXT
IND,X
IND,Y
LDX (opr)
Load Index
Register
X
M : M + 1 ⇒ IX
IMM
DIR
EXT
IND,X
IND,Y
LDY (opr)
Load Index
Register
Y
M : M + 1 ⇒ IY
IMM
DIR
EXT
IND,X
IND,Y
LSL (opr)
Logical Shift
Left
C
LSLA
b7
b0
Logical Shift
Left A
C
LSLB
b7
b0
Logical Shift
Left B
C
LSLD
b7
b0
LSRA
0
Logical Shift
Right A
LSRB
0
Logical Shift
Right B
LSRD
Logical Shift
Right Double
0
0
b7
b7
b7
Condition Codes
Cycles
S
X
H
I
N
Z
V
C
jj kk
dd
hh ll
ff
ff
3
4
5
5
6
—
—
—
—
∆
∆
0
—
18
8E
9E
BE
AE
AE
jj kk
dd
hh ll
ff
ff
3
4
5
5
6
—
—
—
—
∆
∆
0
—
CD
CE
DE
FE
EE
EE
18
18
18
1A
18
CE
DE
FE
EE
EE
jj kk
dd
hh ll
ff
ff
4
5
6
6
6
—
—
—
—
∆
∆
0
—
hh ll
ff
ff
6
6
7
—
—
—
—
∆
∆
∆
∆
18
78
68
68
A
INH
48
—
2
—
—
—
—
∆
∆
∆
∆
B
INH
58
—
2
—
—
—
—
∆
∆
∆
∆
INH
05
—
3
—
—
—
—
∆
∆
∆
∆
EXT
IND,X
IND,Y
74
64
64
6
6
7
—
—
—
—
0
∆
∆
∆
0
b7 A b0 b7 B b0
C
Logical Shift
Right
Operand
0
Logical Shift
Left Double
LSR (opr)
EXT
IND,X
IND,Y
0
Instruction
Opcode
0
b0 C
18
hh ll
ff
ff
A
INH
44
—
2
—
—
—
—
0
∆
∆
∆
B
INH
54
—
2
—
—
—
—
0
∆
∆
∆
INH
04
—
3
—
—
—
—
0
∆
∆
∆
—
10
—
—
—
—
—
—
—
∆
6
6
7
—
—
—
—
∆
∆
∆
∆
b0 C
b0 C
b7 A b0 b7 B b0 C
MUL
Multiply 8 by 8
A∗B⇒D
INH
3D
NEG (opr)
Two’s
Complement
Memory Byte
0–M⇒M
EXT
IND,X
IND,Y
70
60
60
NEGA
Two’s
Complement
A
0–A⇒A
A
INH
40
—
2
—
—
—
—
∆
∆
∆
∆
NEGB
Two’s
Complement
B
0–B⇒B
B
INH
50
—
2
—
—
—
—
∆
∆
∆
∆
—
18
hh ll
ff
ff
NOP
No operation
No Operation
INH
01
2
—
—
—
—
—
—
—
—
ORAA (opr)
OR
Accumulator
A (Inclusive)
A+M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
8A
9A
BA
AA
AA
ORAB (opr)
OR
Accumulator
B (Inclusive)
B+M⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
0
—
18
CA
DA
FA
EA
EA
MOTOROLA
M68HC11E Series Programming Reference Guide
17
M68HC11ERG/AD
Table 1. Instruction Set (Sheet 6 of 8)
Addressing
Mode
Mnemonic
Operation
Description
PSHA
Push A onto
Stack
A ⇒ Stk,SP = SP – 1 A
INH
PSHB
Push B onto
Stack
B ⇒ Stk,SP = SP – 1 B
PSHX
Push X onto
Stack (Lo
First)
PSHY
Instruction
Condition Codes
Operand
Cycles
S
X
H
I
N
Z
V
C
36
—
3
—
—
—
—
—
—
—
—
INH
37
—
3
—
—
—
—
—
—
—
—
IX ⇒ Stk,SP = SP – 2
INH
3C
—
4
—
—
—
—
—
—
—
—
Push Y onto
Stack (Lo
First)
IY ⇒ Stk,SP = SP – 2
INH
3C
—
5
—
—
—
—
—
—
—
—
PULA
Pull A from
Stack
SP = SP + 1, A ⇐ Stk A
INH
32
—
4
—
—
—
—
—
—
—
—
PULB
Pull B from
Stack
SP = SP + 1, B ⇐ Stk B
INH
33
—
4
—
—
—
—
—
—
—
—
PULX
Pull X From
Stack (Hi
First)
SP = SP + 2, IX ⇐ Stk
INH
38
—
5
—
—
—
—
—
—
—
—
PULY
Pull Y from
Stack (Hi
First)
SP = SP + 2, IY ⇐ Stk
INH
18
38
—
6
—
—
—
—
—
—
—
—
ROL (opr)
Rotate Left
6
6
7
—
—
—
—
∆
∆
∆
∆
18
79
69
69
ROLA
Rotate Left A
ROLB
Rotate Left B
ROR (opr)
Rotate Right
RORA
Rotate Right A
RORB
Rotate Right B
RTI
Return from
Interrupt
RTS
C
C
C
b7
b7
EXT
IND,X
IND,Y
b0
b7
Opcode
18
hh ll
ff
ff
A
INH
49
—
2
—
—
—
—
∆
∆
∆
∆
B
INH
59
—
2
—
—
—
—
∆
∆
∆
∆
EXT
IND,X
IND,Y
76
66
66
6
6
7
—
—
—
—
∆
∆
∆
∆
b0
b7
b0
b0 C
18
hh ll
ff
ff
A
INH
46
—
2
—
—
—
—
∆
∆
∆
∆
B
INH
56
—
2
—
—
—
—
∆
∆
∆
∆
See Figure 3–2
INH
3B
—
12
∆
↓
∆
∆
∆
∆
∆
∆
Return from
Subroutine
See Figure 3–2
INH
39
—
5
—
—
—
—
—
—
—
—
SBA
Subtract B from
A
A–B⇒A
INH
10
—
2
—
—
—
—
∆
∆
∆
∆
SBCA (opr)
Subtract with
Carry from A
A–M–C⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
82
92
B2
A2
A2
SBCB (opr)
Subtract with
Carry from B
B–M–C⇒B
B
B
B
B
B
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
C2
D2
F2
E2
E2
b7
b7
18
b0 C
b0 C
SEC
Set Carry
1⇒C
INH
0D
—
2
—
—
—
—
—
—
—
1
SEI
Set Interrupt
Mask
1⇒I
INH
0F
—
2
—
—
—
1
—
—
—
—
SEV
Set Overflow
Flag
1⇒V
INH
0B
—
2
—
—
—
—
—
—
1
—
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Instruction Set
Table 1. Instruction Set (Sheet 7 of 8)
Addressing
Mode
Mnemonic
Operation
Description
STAA (opr)
Store
Accumulator
A
A⇒M
A
A
A
A
DIR
EXT
IND,X
IND,Y
STAB (opr)
Store
Accumulator
B
B⇒M
B
B
B
B
DIR
EXT
IND,X
IND,Y
STD (opr)
Store
Accumulator
D
A ⇒ M, B ⇒ M + 1
STOP
Stop Internal
Clocks
—
STS (opr)
Store Stack
Pointer
STX (opr)
DIR
EXT
IND,X
IND,Y
Instruction
Opcode
Operand
Condition Codes
I
N
Z
V
C
dd
hh ll
ff
ff
3
4
4
5
—
—
—
—
∆
∆
0
—
18
97
B7
A7
A7
dd
hh ll
ff
ff
3
4
4
5
—
—
—
—
∆
∆
0
—
18
D7
F7
E7
E7
dd
hh ll
ff
ff
4
5
5
6
—
—
—
—
∆
∆
0
—
18
DD
FD
ED
ED
2
—
—
—
—
—
—
—
—
S
X
H
INH
CF
SP ⇒ M : M + 1
DIR
EXT
IND,X
IND,Y
dd
hh ll
ff
ff
4
5
5
6
—
—
—
—
∆
∆
0
—
18
9F
BF
AF
AF
Store Index
Register X
IX ⇒ M : M + 1
DIR
EXT
IND,X
IND,Y
dd
hh ll
ff
ff
4
5
5
6
—
—
—
—
∆
∆
0
—
CD
DF
FF
EF
EF
STY (opr)
Store Index
Register Y
IY ⇒ M : M + 1
DIR
EXT
IND,X
IND,Y
18
18
1A
18
DF
FF
EF
EF
dd
hh ll
ff
ff
5
6
6
6
—
—
—
—
∆
∆
0
—
SUBA (opr)
Subtract
Memory from
A
A–M⇒A
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
80
90
B0
A0
A0
SUBB (opr)
Subtract
Memory from
B
B–M⇒B
A
A
A
A
A
IMM
DIR
EXT
IND,X
IND,Y
ii
dd
hh ll
ff
ff
2
3
4
4
5
—
—
—
—
∆
∆
∆
∆
18
C0
D0
F0
E0
E0
SUBD (opr)
Subtract
Memory from
D
D–M:M+1⇒D
jj kk
dd
hh ll
ff
ff
4
5
6
6
7
—
—
—
—
∆
∆
∆
∆
18
83
93
B3
A3
A3
SWI
Software
Interrupt
See Figure 3–2
14
—
—
—
1
—
—
—
—
TAB
Transfer A to B
A⇒B
INH
16
—
2
—
—
—
—
∆
∆
0
—
TAP
Transfer A to
CC Register
A ⇒ CCR
INH
06
—
2
∆
↓
∆
∆
∆
∆
∆
∆
IMM
DIR
EXT
IND,X
IND,Y
INH
3F
—
Cycles
—
TBA
Transfer B to A
B⇒A
INH
17
—
2
—
—
—
—
∆
∆
0
—
TEST
TEST (Only in
Test Modes)
Address Bus Counts
INH
00
—
*
—
—
—
—
—
—
—
—
TPA
Transfer CC
Register to A
CCR ⇒ A
INH
07
—
2
—
—
—
—
—
—
—
—
TST (opr)
Test for Zero or
Minus
M–0
EXT
IND,X
IND,Y
7D
6D
6D
6
6
7
—
—
—
—
∆
∆
0
0
TSTA
Test A for Zero
or Minus
A–0
A
INH
4D
—
2
—
—
—
—
∆
∆
0
0
TSTB
Test B for Zero
or Minus
B–0
B
INH
5D
—
2
—
—
—
—
∆
∆
0
0
TSX
Transfer Stack
Pointer to X
SP + 1 ⇒ IX
INH
30
—
3
—
—
—
—
—
—
—
—
MOTOROLA
18
hh ll
ff
ff
M68HC11E Series Programming Reference Guide
19
M68HC11ERG/AD
Table 1. Instruction Set (Sheet 8 of 8)
Operation
Description
TSY
Transfer Stack
Pointer to Y
SP + 1 ⇒ IY
INH
TXS
Transfer X to
Stack Pointer
IX – 1 ⇒ SP
INH
TYS
Transfer Y to
Stack Pointer
IY – 1 ⇒ SP
INH
WAI
Wait for
Interrupt
Stack Regs & WAIT
XGDX
Exchange D
with X
XGDY
Exchange D
with Y
Cycle
*
**
Instruction
Addressing
Mode
Mnemonic
Opcode
Condition Codes
Operand
Cycles
S
X
H
I
N
Z
V
C
30
—
4
—
—
—
—
—
—
—
—
35
—
3
—
—
—
—
—
—
—
—
35
—
4
—
—
—
—
—
—
—
—
INH
3E
—
**
—
—
—
—
—
—
—
—
IX ⇒ D, D ⇒ IX
INH
8F
—
3
—
—
—
—
—
—
—
—
IY ⇒ D, D ⇒ IY
INH
8F
—
4
—
—
—
—
—
—
—
—
18
18
18
Infinity or until reset occurs
12 cycles are used beginning with the opcode fetch. A wait state is entered which remains in effect for an integer number of MPU E-clock
cycles (n) until an interrupt is recognized. Finally, two additional cycles are used to fetch the appropriate interrupt vector (14 + n total).
Operands
dd
= 8-bit direct address ($0000–$00FF) (high byte assumed to be $00)
ff
= 8-bit positive offset $00 (0) to $FF (255) (is added to index)
hh
= High-order byte of 16-bit extended address
ii
= One byte of immediate data
jj
= High-order byte of 16-bit immediate data
kk
= Low-order byte of 16-bit immediate data
ll
= Low-order byte of 16-bit extended address
mm
= 8-bit mask (set bits to be affected)
rr
= Signed relative offset $80 (–128) to $7F (+127)
(offset relative to address following machine code offset byte))
Operators
()
Contents of register shown inside parentheses
⇐
Is transferred to
⇑
Is pulled from stack
⇓
Is pushed onto stack
•
Boolean AND
+
Arithmetic addition symbol except where used as inclusive-OR symbol
in Boolean formula
⊕
Exclusive-OR
∗
Multiply
:
Concatenation
–
Arithmetic subtraction symbol or negation symbol (two’s complement)
20
Condition Codes
—
Bit not changed
0
Bit always cleared
1
Bit always set
∆
Bit cleared or set, depending on operation
↓
Bit can be cleared, cannot become set
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Special Operations
Special Operations
JSR, JUMP TO SUBROUTINE
RTI, RETURN FROM INTERRUPT
MAIN PROGRAM
PC
PC
DIRECT
$9D = JSR
dd
RTN NEXT MAIN INSTR.
SP+4
$AD = JSR
ff
RTN NEXT MAIN INSTR.
7
⇑
STACK
SP+5
0
SP+6
SP+7
SP–2
SP–1
SP
$18 = PRE
$AD = JSR
RTN
ff
NEXT MAIN INSTR.
SP+8
RTNH
RTNL
⇑
MAIN PROGRAM
PC
$3F = SWI
$BD = PRE
hh
RTN
ll
NEXT MAIN INSTR.
SP–6
WAI, WAIT FOR INTERRUPT
PC
SP–4
SP–3
$3E = WAI
SP–2
SP–1
7
⇑
STACK
RTS, RETURN FROM
SUBROUTINE
MAIN PROGRAM
LEGEND:
RTNH
RTNL
SP
7
STACK
SP
$39 = RTS
SP+1
⇑
SP
SP+2
CCR
ACCB
ACCA
IXH
IXL
IYH
IYL
RTNH
RTNL
0
SP–2
SP–1
MOTOROLA
SP–5
MAIN PROGRAM
BSR, BRANCH TO SUBROUTINE
0
SP–9
SP–7
PC
PC
⇑
SP–8
MAIN PROGRAM
0
SWI, SOFTWARE INTERRUPT
MAIN PROGRAM
$8D = BSR
STACK
SP+3
PC
PC
7
SP+2
MAIN PROGRAM
INDEXED, Y
SP+9
CCR
ACCB
ACCA
IXH
IXL
IYH
IYL
RTNH
RTNL
SP+1
PC
INDEXED, Y
STACK
SP
$3B = RTI
MAIN PROGRAM
INDEXED, X
7
INTERRUPT ROUTINE
RTNH
RTNL
0
RTN = ADDRESS OF NEXT INSTRUCTION IN MAIN PROGRAM TO
BE EXECUTED UPON RETURN FROM SUBROUTINE
RTNH = MOST SIGNIFICANT BYTE OF RETURN ADDRESS
RTNL = LEAST SIGNIFICANT BYTE OF RETURN ADDRESS
⇑ = STACK POINTER POSITION AFTER OPERATION IS COMPLETE
dd = 8-BIT DIRECT ADDRESS ($0000–$00FF) (HIGH BYTE ASSUMED
TO BE $00)
ff = 8-BIT POSITIVE OFFSET $00 (0) TO $FF (255) IS ADDED TO INDEX
hh = HIGH-ORDER BYTE OF 16-BIT EXTENDED ADDRESS
ll = LOW-ORDER BYTE OF 16-BIT EXTENDED ADDRESS
rr = SIGNED RELATIVE OFFSET $80 (–128) TO $7F (+127) (OFFSET
RELATIVE TO THE ADDRESS FOLLOWING THE MACHINE CODE
OFFSET BYTE)
M68HC11E Series Programming Reference Guide
21
M68HC11ERG/AD
M68HC11E Series Registers
Figure 6 provides a summary of the M68HC11E registers. Note that the
128-byte register block can be remapped to any 4K boundary.
Addr.
Register Name
Read:
$1000
Port A Data Register
(PORTA)
Write:
Reset:
$1001
Reserved
$1002
Parallel I/O Control Register
(PIOC)
Read:
Write:
Reset:
Read:
$1003
Port C Data Register
(PORTC)
Write:
Bit 7
6
5
4
3
2
1
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
I
0
0
0
I
I
I
I
R
R
R
R
R
R
R
R
STAF
STAI
CWOM
HNDS
OIN
PLS
EGA
INVB
0
0
0
0
0
U
1
1
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Reset:
Read:
$1004
Port B Data Register
(PORTB)
Write:
Reset:
Read:
$1005
Port C Latched Register
(PORTCL)
Write:
Indeterminate after reset
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
0
0
0
0
0
0
0
0
PCL7
PCL6
PCL5
PCL4
PCL3
PCL2
PCL1
PCL0
Reset:
$1006
Reserved
$1007
Port C Data Direction Register
(DDRC)
Read:
Write:
Reset:
Read:
$1008
Port D Data Register
(PORTD)
Write:
Reset:
Indeterminate after reset
R
R
R
R
R
R
R
R
DDRC7
DDRC6
DDRC5
DDRC4
DDRC3
DDRC2
DDRC1
DDRC0
0
0
0
0
0
0
0
0
0
0
PD5
PD4
PD3
PD2
PD1
PD0
U
U
I
I
I
I
I
I
DDRD5
DDRD4
DDRD3
DDRD2
DDRD1
DDRD0
Read:
$1009
Port D Data Direction Register
(DDRD)
Write:
Reset:
Read:
$100A
Port E Data Register
(PORTE)
Write:
0
0
0
0
0
0
0
0
PE7
PE6
PE5
PE4
PE3
PE2
PE1
PE0
Reset:
Indeterminate after reset
= Unimplemented
R
= Reserved
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 1 of 6)
22
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Addr.
Register Name
$100B
Timer Compare Force Register
(CFORC)
Bit 7
6
5
4
3
FOC1
FOC2
FOC3
FOC4
FOC5
0
0
0
0
0
OC1M7
OC1M6
OC1M5
OC1M4
OC1M3
0
0
0
0
0
OC1D7
OC1D6
OC1D5
OC1D4
OC1D3
Reset:
0
0
0
0
Read:
Bit 15
Bit 14
Bit 13
Reset:
0
0
Read:
Bit 7
Read:
Write:
Reset:
Read:
$100C
Output Compare 1 Mask Register
(OC1M)
Write:
Reset:
Read:
$100D
$100E
$100F
Output Compare 1 Data Register
(OC1D)
Timer Counter Register High
(TCNTH)
Timer Counter Register Low
(TCNTL)
Write:
Bit 0
0
0
0
0
0
0
0
0
0
0
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
0
0
0
0
0
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Bit 10
Bit 9
Bit 8
Bit 2
Bit 1
Bit 0
Bit 10
Bit 9
Bit 8
1
1
1
Write:
Read:
Timer Input Capture 1 Register
High (TIC1H)
1
Write:
Reset:
$1010
2
Write:
Reset:
Read:
$1011
Timer Input Capture 1 Register
Low (TIC1L)
Write:
Indeterminate after reset
Bit 7
Bit 6
Bit 5
Reset:
Read:
$1012
Timer Input Capture 2 Register
High (TIC2H)
Write:
$1013
TImer Input Capture 2 Register
Low (TIC2L)
Write:
Bit 15
Bit 14
Bit 13
$1014
Timer Input Capture 3 Register
High (TIC3H)
Write:
Bit 7
Bit 6
Bit 5
Read:
Timer Input Capture 3 Register
Low (TIC3L)
Write:
Bit 15
Bit 14
Bit 13
$1016
Timer Output Compare 1 Register
High (TOC1H)
Write:
Reset:
Bit 4
Bit 3
Bit 12
Bit 11
Indeterminate after reset
Bit 7
Bit 6
Bit 5
Reset:
Read:
Bit 11
Indeterminate after reset
Reset:
$1015
Bit 12
Indeterminate after reset
Reset:
Read:
Bit 3
Indeterminate after reset
Reset:
Read:
Bit 4
Bit 4
Bit 3
Indeterminate after reset
Bit 15
1
Bit 14
Bit 13
Bit 12
Bit 11
1
1
1
1
= Unimplemented
R
= Reserved
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 2 of 6)
MOTOROLA
M68HC11E Series Programming Reference Guide
23
M68HC11ERG/AD
Addr.
Register Name
$1017
Timer Output Compare 1 Register
Low (TOC1L)
Read:
Write:
Reset:
Read:
$1018
Timer Output Compare 2 Register
High (TOC2H)
Write:
Reset:
Read:
$1019
Timer Output Compare 2 Register
Low (TOC2L)
Write:
Reset:
Read:
Timer Output Compare 3 Register
$101A
High (TOC3H)
Write:
Reset:
Read:
$101B
Timer Output Compare 3 Register
Low (TOC3L)
Write:
Reset:
Read:
$101C
Timer Output Compare 4 Register
High (TOC4H)
Write:
Reset:
Read:
Timer Output Compare 4 Register
$101D
Low (TOC4L)
Write:
Reset:
$101E
Timer Input Capture 4/Output Read:
Compare 5 Register High Write:
(TI4/O5) Reset:
Read:
$101F
Timer Input Capture 4/Output
Compare 5 Register Low Write:
(TI4/O5) Reset:
Read:
$1020
Timer Control Register 1
(TCTL1)
Write:
Reset:
Read:
$1021
Timer Control Register 2
(TCTL2)
Write:
Reset:
Read:
$1022
Timer Interrupt Mask 1 Register
(TMSK1)
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
1
1
1
1
1
1
1
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1
1
1
1
1
1
1
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
1
1
1
1
1
1
1
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1
1
1
1
1
1
1
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
1
1
1
1
1
1
1
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1
1
1
1
1
1
1
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
1
1
1
1
1
1
1
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1
1
1
1
1
1
1
1
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
1
1
1
1
1
1
1
OM2
OL2
OM3
OL3
OM4
OL4
OM5
OL5
0
0
0
0
0
0
0
0
EDG4B
EDG4A
EDG1B
EDG1A
EDG2B
EDG2A
EDG3B
EDG3A
0
0
0
0
0
0
0
0
OC1I
OC2I
OC3I
OC4I
I4/O5I
IC1I
IC2I
IC3I
0
0
0
0
0
0
0
= Unimplemented
R
= Reserved
0
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 3 of 6)
24
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Addr.
Register Name
$1023
Timer Interrupt Flag 1
(TFLG1)
Read:
Write:
Reset:
Read:
$1024
Timer Interrupt Mask 2 Register
(TMSK2)
Write:
Reset:
Read:
Timer Interrupt Flag 2
(TFLG2)
$1025
Write:
Reset:
Read:
Pulse Accumulator Control
Register (PACTL)
$1026
Write:
Reset:
Read:
Pulse Accumulator Count
Register (PACNT)
$1027
Write:
Bit 7
6
5
4
3
2
1
Bit 0
OC1F
OC2F
OC3F
OC4F
I4/O5F
IC1F
IC2F
IC3F
0
0
0
0
0
0
0
0
TOI
RTII
PAOVI
PAII
PR1
PR0
0
0
0
0
TOF
RTIF
PAOVF
PAIF
0
0
0
DDRA7
PAEN
0
Bit 7
0
0
0
0
0
0
0
0
0
PAMOD
PEDGE
DDRA3
I4/O5
RTR1
RTR0
0
0
0
0
0
0
0
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reset:
Read:
$1028
Serial Peripheral Control Register
(SPCR)
Write:
Reset:
Read:
$1029
Serial Peripheral Status Register
(SPSR)
Write:
Reset:
Read:
Serial Peripheral Data I/O
Register (SPDR)
$102A
Write:
Indeterminate after reset
SPIE
SPE
DWOM
MSTR
CPOL
CPHA
SPR1
SPR0
0
0
0
0
0
1
U
U
SPIF
WCOL
0
0
0
0
0
0
0
0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
MODF
Reset:
Read:
Baud Rate Register
(BAUD)
$102B
Write:
Reset:
Read:
$102C
Serial Communications Control
Register 1 (SCCR1)
Write:
Reset:
Read:
$102D
Serial Communications Control
Register 2 (SCCR2)
Write:
Reset:
Read:
$102E
Serial Communications Status
Register (SCSR)
Write:
Reset:
Indeterminate after reset
TCLR
SCP2(1)
SCP1
SCP0
RCKB
SCR2
SCR1
SCR0
0
0
0
0
0
U
U
U
R8
T8
M
WAKE
I
I
0
0
0
0
0
0
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
0
0
0
0
0
0
0
0
TDRE
TC
RDRF
IDLE
OR
NF
FE
1
1
0
0
0
0
0
= Unimplemented
R
= Reserved
0
1. SCP2 adds ÷ 39 to SCI prescaler and is present only in MC68HC(7)11E20.
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 4 of 6)
MOTOROLA
M68HC11E Series Programming Reference Guide
25
M68HC11ERG/AD
Addr.
Register Name
$102F
Serial Communications Data
Register (SCDR)
Read:
Write:
Bit 7
6
5
4
3
2
1
Bit 0
R7/T7
R6/T6
R5/T5
R4/T4
R3/T3
R2/T2
R1/T1
R0/T0
CC
CB
CA
Bit 2
Bit 1
Bit 0
Bit 2
Bit 1
Bit 0
Bit 2
Bit 1
Bit 0
Bit 2
Bit 1
Bit 0
Reset:
Read:
$1030
$1031
Analog-to-Digital Control Status
Register (ADCTL)
Analog-to-Digital Results Register
1 (ADR1)
Indeterminate after reset
CCF
Write:
Reset:
0
0
Read:
Bit 7
Bit 6
SCAN
MULT
Bit 5
Bit 4
Indeterminate after reset
Read:
$1032
Indeterminate after reset
Bit 7
Bit 6
Bit 5
Read:
Analog-to-Digital Results Register
3 (ADR3)
Bit 7
Bit 6
Bit 5
Bit 7
Bit 6
Bit 5
Read:
EPROM Programming Control
Register (EPROG)(1)
Bit 3
Indeterminate after reset
PTCON
BPRT3
BPRT2
BPRT1
BPRT0
0
1
1
1
1
1
ELAT
EXCOL
EXROW
T1
T0
PGM
Write:
Reset:
$1036
Bit 4
Write:
Read:
$1035
Bit 3
Indeterminate after reset
Reset:
Block Protect Register
(BPROT)
Bit 4
Write:
Read:
$1034
Bit 3
Indeterminate after reset
Reset:
Analog-to-Digital Results Register
4 (ADR4)
Bit 4
Write:
Reset:
$1033
Bit 3
Write:
Reset:
Analog-to-Digital Results Register
2 (ADR2)
CD
Write:
Reset:
0
0
MBE
0
0
0
0
0
0
0
0
1. MC68HC711E20 only
$1037
Reserved
R
R
R
R
R
R
R
R
$1038
Reserved
R
R
R
R
R
R
R
R
$1039
System Configuration Options
Register (OPTION)
ADPU
CSEL
IRQE(1)
DLY(1)
CME
CR1(1)
CR0(1)
0
0
0
1
0
0
0
0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
0
0
ODD
EVEN
ELAT(2)
BYTE
ROW
ERASE
EELAT
EPGM
0
0
0
0
0
0
0
= Unimplemented
R
= Reserved
Read:
Write:
Reset:
Read:
$103A
Arm/Reset COP Timer Circuitry
Register (COPRST)
Write:
Reset:
$103B
EPROM and EEPROM Read:
Programming Control Register Write:
(PPROG) Reset:
0
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 5 of 6)
26
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Addr.
$103C
Register Name
Bit 7
Highest Priority I Bit Interrupt and Read: RBOOT
Miscellaneous Register Write:
(HPRIO) Reset:
0
Read:
$103D
RAM and I/O Mapping Register
(INIT)
$103E
Reserved
$103F
System Configuration Register
(CONFIG)
RAM3
Write:
Reset:
6
5
4
3
2
1
Bit 0
SMOD
MDA
IRV(NE)
PSEL3
PSEL2
PSEL1
PSEL0
0
0
0
0
1
1
0
RAM2
RAM1
RAM0
REG3
REG2
REG1
REG0
0
0
0
0
0
0
0
1
R
R
R
R
R
R
R
R
NOSEC
NOCOP
ROMON
EEON
1
U
Read:
Write:
Reset:
Read:
$103F
System Configuration Register
(CONFIG)(3)
Write:
0
0
0
0
U
U
EE3
EE2
EE1
EE0
NOSEC
NOCOP
1
1
1
1
U
U
Reset:
EEON
1
1
1. Can be written only once in first 64 cycles out of reset in normal modes or at any time during special modes.
2. MC68HC711E9 only
3. MC68HC811E2 only
= Unimplemented
R
= Reserved
U = Unaffected
I = Indeterminate after reset
Figure 6. Register and Control Bit Assignments (Sheet 6 of 6)
A/D Control/Status Register (ADCTL)
Address:
$1030
Read:
CCF
Bit 7
6
Write:
Reset:
0
5
4
3
2
1
Bit 0
SCAN
MULT
CD
CC
CB
CA
0
Indeterminate after reset
= Unimplemented
CCF — Conversion Complete Flag
This bit is set after an A/D conversion cycle and cleared when ADCTL is
written.
Bit 6 — Unimplemented
Always reads 0
SCAN — Continuous Scan Control
0 = Do four conversions and stop
1 = Convert four channels in selected group continuously
MULT — Multiple Channel/Single Channel Control
0 = Convert single channel selected
1 = Convert four channels in selected group
MOTOROLA
M68HC11E Series Programming Reference Guide
27
M68HC11ERG/AD
CD:CA — Channel Selects D:A
Refer to the following table.
Channel Select
Control Bits
CD:CC:CB:CA
0000
0001
0010
0011
0100
0101
0110
0111
10XX
Channel Signal
Result in ADRx
if MULT = 1
Result in ADRx
if MULT = 0
AN0
AN1
AN2
AN3
AN4
AN5
AN6
AN7
Reserved
ADR1
ADR2
ADR3
ADR4
ADR1
ADR2
ADR3
ADR4
—
ADR[4:1]
ADR[4:1]
ADR[4:1]
ADR[4:1]
ADR[4:1]
ADR[4:1]
ADR[4:1]
ADR[4:1]
—
1100
VRH(1)
ADR1
ADR[4:1]
1101
VRL(1)
ADR2
ADR[4:1]
ADR3
ADR[4:1]
ADR4
ADR[4:1]
1110
1111
(VRH
)/2(1)
Reserved(1)
1. Used for factory testing
A/D Results (ADR1–ADR4)
ADR1 — Address: $1031
Bit 7
6
5
Read:
Bit 7
6
5
Write:
Reset:
ADR2 — Address: $1032
Bit 7
6
5
Read:
Bit 7
6
5
Write:
Reset:
ADR3 — Address: $1033
Bit 7
6
5
Read:
Bit 7
6
5
Write:
Reset:
ADR4 — Address: $1034
Bit 7
6
5
Read:
Bit 7
6
5
Write:
Reset:
= Unimplemented
28
4
4
3
3
2
2
1
1
Bit 0
Bit 0
2
2
1
1
Bit 0
Bit 0
2
2
1
1
Bit 0
Bit 0
2
2
1
1
Bit 0
Bit 0
Indeterminate after reset
4
4
3
3
Indeterminate after reset
4
4
3
3
Indeterminate after reset
4
4
3
3
Indeterminate after reset
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Analog Input to 8-Bit Result Translation Table
(1)
Bit 7
6
5
4
3
2
1
Bit 0
50%
25%
12.5%
6.25%
3.12%
1.56%
0.78%
0.39%
Volts
(2)
2.500
1.250
0.625
0.3125
0.1562
0.0781
0.0391
0.0195
Volts
(3)
1.65
8.25
0.4125
0.2063
0.1031
0.0516
0.0258
0.0129
%
1. % of VRH–VRL
2. Voltages for VRL = 0; VRH = 5.0 V
3. Voltages for VRL = 0; VRH = 3.3 V
Baud Rate Control Register (BAUD)
Address:
$102B
Read:
Write:
Bit 7
6
5
4
3
2
1
Bit 0
TCLR
SCP2
SCP1
SCP0
RCKB
SCR2
SCR1
SCR0
0
0
0
0
0
U
U
U
Reset:
U = Unaffected
TCLR — Clear Baud Rate Counter (Test)
SCP[2:0] — SCI Baud Rate Prescaler Select
SCP2 applies to the MC68HC(7)11E20 only. When SCP2 = 1, SCP[1:0]
must equal 0. Any other values for SCP[1:0] are not decoded in the
prescaler and the results are unpredictable.
SCP
2(1)
1
0
Divide
Internal
Clock By
Crystal Frequency (MHz)
0
0
0
1
62500
76800
125000
131072
187500
0
0
1
3
20833
25600
41667
43691
62500
0
1
0
4
15625
19200
31250
32768
46875
4.0
4.9152
8.0
8.3886
12.0
0
1
1
13
4800
5907
9600
10082
14423
1
0
0
39
1602
1969
3205
3361
4808
1. Shaded areas apply to MC68HC(7)11E20 only.
RCKB — SCI Baud Rate Clock Check (TEST)
MOTOROLA
M68HC11E Series Programming Reference Guide
29
M68HC11ERG/AD
SCR[2:0] — SCI Baud Rate Selects
Selects receiver and transmitter bit rate based on output from baud rate
prescaler stage. Refer to SCI baud rate generator block diagram.
Divide
Prescaler
By
1
2
4
8
16
32
64
128
SCR
2
0
0
0
0
1
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
Highest Baud Rate
(Prescaler Output from Previous Table
131072
76800
32768
19200
131072
76800
32768
19200
65536
38400
16384
9600
32768
19200
8192
4800
16384
9600
4096
2400
8192
480
2048
1200
4096
2400
1024
600
2048
1200
512
300
1024
600
256
150
4800
4800
2400
1200
600
300
150
75
37.5
Block Protect Register (BPROT)
Address:
Read:
Write:
Reset:
$1035
Bit 7
0
6
5
0
0
= Unimplemented
4
3
2
1
Bit 0
PTCON
BPRT3
BPRT2
BPRT1
BPRT0
1
1
1
1
1
Bits [7:5] — Unimplemented
Always read 0
PTCON — Protect CONFIG Register
0 = CONFIG register can be programmed or erased normally.
1 = CONFIG register cannot be programmed or erased.
BPRT[3:0] — Block Protect for EEPROM
Block protect register bits can be written to 0 (protection disabled) only once
within 64 cycles of a reset in normal modes, or at any time in special modes.
Block protect register bits can be written to 1 (protection enabled) at any
time.
0 = Protection disabled for associated block
1 = Protection enabled for associated block
Bit Name
BPRT0
BPRT1
BPRT2
BPRT3
Block Protected
$B600–$B61F
$B620–$B65F
$B660–$B6DF
$B6E0–$B7FF
MC68HC811E2 Only
Block Size
32 bytes
64 bytes
128 bytes
288 bytes
BPRT0
$x800–$x9FF(1)
512 bytes
BPRT1
$xA00–$xBFF(1)
512 bytes
BPRT2
$xC00–$xDFF(1)
512 bytes
BPRT3
(1)
512 bytes
$xE00–$xFFF
1. x is determined by the value of EE[3:0] in CONFIG (MC68HC811E2 only).
Refer to the MC68HC811E2 CONFIG register.
30
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Timer Compare Force Register (CFORC)
Address:
Read:
Write:
$100B
Bit 7
6
5
4
3
FOC1
FOC2
FOC3
FOC4
FOC5
0
0
0
0
0
Reset:
2
1
Bit 0
0
0
0
= Unimplemented
FOC[1:5] — Force Output Comparison
Write 1s to force compare(s).
0 = Not affected
1 = Output x action occurs
Bits [2:0] — Unimplemented
Always read 0
Configuration Register (CONFIG)
Security disable, COP, ROM mapping, and EEPROM enables
Address:
$103F
Bit 7
6
5
4
Read:
Write:
Resets:
Single chip:
Bootstrap:
Expanded:
Test:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
3
2
1
Bit 0
NOSEC
NOCOP
ROMON
EEON
U
U
1
1
U
U(L)
U
U(L)
1
U
U
U
U
U
U
U
= Unimplemented
U indicates a previously programmed bit. U(L) indicates that the bit resets to the logic level held in the latch prior to reset,
but the function of COP is controlled by the DISR bit in TEST1 register.
The following register description applies to the MC68HC11E2 only.
Address:
Read:
Write:
Resets:
Single chip:
Bootstrap:
Expanded:
Test:
$103F
Bit 7
6
5
4
3
2
EE3
EE2
EE1
EE0
NOSEC
NOCOP
1
1
U
U
1
1
U
U
1
1
U
U
1
1
U
U
U
U
1
1
U
U(L)
U
U(L)
1
Bit 0
EEON
1
1
1
1
1
1
U
0
= Unimplemented
U indicates a previously programmed bit. U(L) indicates that the bit resets to the logic level held in the latch prior to reset,
but the function of COP is controlled by the DISR bit in TEST1 register.
MOTOROLA
M68HC11E Series Programming Reference Guide
31
M68HC11ERG/AD
EE[3:0] — EEPROM Map Position (MC68HC811E2 only)
EE[3:0] determine the upper four bits of EEPROM address, positioning
EEPROM at the selected 4-Kbyte boundary. In single-chip and boot modes,
these bits are set to 1s during reset and EEPROM is mapped to top of
memory. Not implemented in other E-series devices; always read 0. Refer
to the following table.
EE3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
EE1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
EE2
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
EE0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
EEPROM Location
$0800–$0FFF
$1800–$1FFF
$2800–$2FFF
$3800–$3FFF
$4800–$4FFF
$5800–$5FFF
$6800–$6FFF
$7800–$7FFF
$8800–$8FFF
$9800–$9FFF
$A800–$AFFF
$B800–$BFFF
$C800–$CFFF
$D800–$DFFF
$E800–$EFFF
$F800–$FFFF
NOSEC — Security Disable
NOSEC is invalid unless the security mask option is specified before the
MCU is manufactured. If the security mask option is omitted NOSEC always
reads 1. The enhanced security feature is available in the MC68S711E9
MCU. The enhancement to the standard security feature protects the
EPROM as well as RAM and EEPROM.
0 = RAM/EEPROM security mode enabled
1 = RAM/EEPROM security mode disabled
NOCOP — COP System Disable
Resets to programmed value.
0 = COP enabled (forces reset on timeout)
1 = COP disabled (does not force reset on timeout)
ROMON — ROM/EPROM Enable
In single-chip mode, ROMON is forced to 1 out of reset. ROMON does not
apply to the MC68HC811E2. For devices with disabled ROM arrays (the
MC68HC11E0, MC68HC11E1, MC68L11E0, or MC68L11E1) ROMON
must never be set to 1.
0 = ROM/EPROM removed from the memory map
1 = ROM/EPROM present in the memory map
EEON — EEPROM Enable
0 = EEPROM removed from the memory map
1 = EEPROM present in the memory map
32
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Arm/Reset COP Timer Circuitry Register (COPRST)
Address:
Read:
Write:
Reset:
$103A
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
6
5
4
3
2
1
BIT 0
0
0
0
0
0
0
0
0
Write $55 to COPRST to arm COP watchdog clearing mechanism. Write $AA
to COPRST to reset COP watchdog.
Data Direction Register for Port C (DDRC)
Address:
Read:
Write:
Reset:
$1007
Bit 7
6
5
4
3
2
1
Bit 0
DDC7
DDC6
DDC5
DDC4
DDC3
DDC2
DDC1
DDC0
0
0
0
0
0
0
0
0
DDC[7:0] — Data Direction for Port C
In handshake output mode, DDRC bits selected the three-stated output
option (DDCx = 1).
0 = Input
1 = Output
Data Direction Register for Port D (DDRD)
Address:
$1009
Bit 7
6
Read:
Write:
Reset:
0
0
5
4
3
2
1
Bit 0
DDD5
DDD4
DDD3
DDD2
DDD1
DDD0
0
0
0
0
0
0
Unimplemented
Bits [7:6] — Unimplemented
Always read 0
DDD[5:0] — Data Direction for Port D
0 = Input
1 = Output
EPROM Programming Control Register (EPROG)
Address:
$1036
Bit 7
Read:
Write:
Reset:
6
MBE
0
5
4
3
2
1
Bit 0
ELAT
EXCOL
EXROW
T1
T0
PGM
0
0
0
0
0
0
0
= Unimplemented
MOTOROLA
M68HC11E Series Programming Reference Guide
33
M68HC11ERG/AD
NOTE:
EPROG is present only on the MC68HC711E20.
MBE — Multiple-Byte Programming Enable
When multiple-byte programming is enabled, address bit 5 is considered a
don’t care so that bytes with address bit 5 = 0 and address bit 5 = 1 both get
programmed. MBE can be read in any mode and always reads 0 in normal
modes. MBE can be written only in special modes.
0 = EPROM array configured for normal programming
1 = Program two bytes with the same data
Bit 6 — Unimplemented
Always reads 0
ELAT — EPROM/OTPROM Latch Control
When ELAT = 1, writes to EPROM cause address and data to be latched
and the EPROM/OTPROM cannot be read. ELAT can be read any time.
ELAT can be written any time except when PGM = 1; then the write to ELAT
is disabled.
0 = EPROM/OTPROM address and data bus configured for normal reads
1 = EPROM/OTPROM address and data bus configured for
programming
EXCOL — Select Extra Columns
0 = User array selected
1 = User array is disabled and extra columns are accessed at bits [7:0].
Addresses use bits [13:5] and bits [4:0] are don’t care. EXCOL can
be read and written only in special modes and always returns 0 in
normal modes.
EXROW — Select Extra Rows
0 = User array selected
1 = User array is disabled and two extra rows are available. Addresses
use bits [7:0] and bits [13:8] are don’t care. EXROW can be read and
written only in special modes and always returns 0 in normal modes.
T[1:0] — EPROM Test Mode Select
These bits allow selection of either gate stress or drain stress test modes.
They can be read and written only in special modes and always read 0 in
normal modes.
T1
T0
Function Selected
0
0
Normal mode
0
1
Reserved
1
0
Gate stress
1
1
Drain stress
PGM — EPROM Programming Voltage Enable
PGM can be read any time and can be written only when ELAT = 1.
0 = Programming voltage to EPROM array disconnected
1 = Programming voltage to EPROM array connected
34
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Highest Priority I Bit Interrupt and Miscellaneous (HPRIO)
Address:
$103C
Bit 7
Read:
RBOOT(1)
Write:
6
5
4
3
2
1
Bit 0
SMOD(1)
MDA(1)
IRVNE
PSEL3
PSEL2
PSEL1
PSEL0
Reset:
0
0
0
0
Single chip:
Expanded:
0
0
1
0
Bootstrap:
1
1
0
0
Special test:
0
1
1
1
1. The values of the RBOOT, SMOD, and MDA reset bits
RESET pin rising edge.
0
0
0
0
depend on
1
1
1
1
the mode
1
0
1
0
1
0
1
0
selected at the
RBOOT — Read Bootstrap ROM
Valid only when SMOD is set to 1 (bootstrap or special test mode). Can only
be written in special modes.
0 = Bootloader ROM disabled and not in map
1 = Bootloader ROM enabled and in map at $BE00–$BFFF
SMOD and MDA — Special Mode Select and Mode Select A
The initial value of SMOD is in the inverse of the logic level present on the
MODB pin at the rising edge of reset. The initial value of MDA equals the
logic level present on the MODA pin at the rising edge of reset. These two
bits can be read at any time. They can be written anytime in special modes.
MDA can only be written once in normal modes. SMOD cannot be set once
it has been cleared. Refer to the following table.
Inputs
MODB
1
1
0
0
MODA
0
1
0
1
Mode
Single chip
Expanded
Bootstrap
Special test
Latched at Reset
SMOD
MDA
0
0
0
1
1
0
1
1
IRVNE — Internal Read Visibility/Not E (IRV in MC68HC811E2)
IRVNE can be written once in any mode. In expanded modes, IRVNE
determines whether IRV is on or off. In special test mode, IRVNE is reset
to 1. For the MC68HC811E2, this bit controls only internal read visibility
function and has no meaning or effect in single-chip modes.
0 = No internal read visibility on external bus
1 = Data from internal reads is driven out the external data bus
In single-chip modes this bit determines whether the E clock drives out from
the chip.
0 = E is driven out from the chip.
1 = E pin is driven low. Refer to the following table.
Mode
Single chip
Expanded
Bootstrap
Special test
MOTOROLA
IRVNE Out
of Reset
0
0
0
1
E Clock Out
of Reset
On
On
On
On
IRV Out
of Reset
Off
Off
Off
On
M68HC11E Series Programming Reference Guide
IRVNE
Affects Only
E
IRV
E
IRV
IRVNE Can
Be Written
Once
Once
Once
Once
35
M68HC11ERG/AD
NOTE:
When IRV function is used, care must be taken to ensure that bus conflicts do
not occur. Data can be driven onto the bus even though the R/W line indicates
a high-impedance state on data bus pins.
PSEL[3:0] — Priority Select
Can be written only while bit I in the CCR is set (interrupts disabled). These
bits select one interrupt source to be elevated above all other I bit related
sources. Refer to the following table.
PSEL3
PSEL2
PSEL1
PSEL0
0
0
0
0
Interrupt Source Promoted
Timer overflow
0
0
0
1
Pulse accumulator overflow
0
0
1
0
Pulse accumulator input edge
0
0
1
1
SPI serial transfer complete
0
1
0
0
SCI serial system
0
1
0
1
Reserved (default to IRQ)
0
1
1
0
IRQ (external pin or parallel I/O)
0
1
1
1
Real-time interrupt
1
0
0
0
Timer input capture 1
1
0
0
1
Timer input capture 2
1
0
1
0
Timer input capture 3
1
0
1
1
Timer output compare 1
1
1
0
0
Timer output compare 2
1
1
0
1
Timer output compare 3
1
1
1
0
Timer output compare 4
1
1
1
1
Timer input capture 4/output compare 5
RAM and Register Mapping (INIT)
Address:
Read:
Write:
Reset:
$103D
Bit 7
6
5
4
3
2
1
Bit 0
RAM3
RAM2
RAM1
RAM0
REG3
REG2
REG1
REG0
0
0
0
0
0
0
0
1
RAM[3:0] — Internal RAM Map Position
Determine the upper four bits of RAM address. At reset, RAM is mapped to
$0000.
RAM[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
36
Address
$0000–$0xFF
$1000–$1xFF
$2000–$2xFF
$3000–$3xFF
$4000–$4xFF
$5000–$5xFF
$6000–$6xFF
$7000–$7xFF
RAM[3:0]
1000
1001
1010
1011
1100
1101
1110
1111
M68HC11E Series Programming Reference Guide
Address
$8000–$8xFF
$9000–$9xFF
$A000–$AxFF
$B000–$BxFF
$C000–$CxFF
$D000–$DxFF
$E000–$ExFF
$F000–$FxFF
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
REG[3:0] — 64-Byte Register Block Map Position
Determine upper four bits of register space address. At reset, registers are
mapped to $1000.
NOTE:
REG[3:0]
Address
REG[3:0]
Address
0000
$0000–$003F
1000
$8000–$803F
0001
$1000–$103F
1001
$9000–$903F
0010
$2000–$203F
1010
$A000–$A03F
0011
$3000–$303F
1011
$B000–$B03F
0100
$4000–$403F
1100
$C000–$C03F
0101
$5000–$503F
1101
$D000–$D03F
0110
$6000–$603F
1110
$E000–$E03F
0111
$7000–$703F
1111
$F000–$F03F
Can be written only once in first 64 cycles out of reset in normal modes or at
any time in special modes.
Output Compare 1 Data Register (OC1D)
Address:
Read:
Write:
Reset:
$100D
Bit 7
6
5
4
3
OC1D7
OC1D6
OC1D5
OC1D4
OC1D3
0
0
0
0
0
2
1
Bit 0
0
0
0
Unimplemented
If OC1Mx is set, data in OC1Dx is output to port A bit x on successful OC1
compares.
Bits [2:0]— Unimplemented
Always reads 0
Output Compare 1 Mask Register (OC1M)
Address:
Read:
Write:
Reset:
$100C
Bit 7
6
5
4
3
OC1M7
OC1M6
OC1M5
OC1M4
OC1M3
0
0
0
0
0
2
1
Bit 0
0
0
0
Unimplemented
OC1M[7:3] — Output Compare Masks
0 = OC1 disabled
1 = OC1 enabled to control the corresponding pin of port A
Bits [2:0]— Unimplemented
Always reads 0
MOTOROLA
M68HC11E Series Programming Reference Guide
37
M68HC11ERG/AD
System Configuration Options (OPTION)
Address:
Read:
Write:
$1039
Bit 7
6
5
4
3
ADPU
CSEL
IRQE(1)
DLY(1)
CME
0
0
0
1
0
Reset:
2
0
1
Bit 0
CR1(1)
CR0(1)
0
0
1. Can be written only once in first 64 cycles out of reset in normal modes or at any time during
special modes.
= Unimplemented
ADPU — Analog-to-Digital (A/D) Converter Power-Up
0 = A/D powered down
1 = A/D powered up
CSEL — Clock Select
0 = A/D and EEPROM charge pumps use system E clock
1 = A/D and EEPROM charge pumps use internal RC oscillator
IRQE — IRQ Select Edge-Sensitive Only
0 = Low level recognition
1 = Falling edge recognition
DLY — Enable Oscillator Startup Delay on Exit from Stop Mode
0 = No stabilization delay on exit from stop mode
1 = Stabilization delay enabled on exit from stop mode
CME — Clock Monitor Enable
0 = Clock monitor disabled; slow clocks can be used
1 = Slow or stopped clocks cause clock failure reset
Bit 2 — Not implemented
Always reads 0
CR[1:0] — COP Timer Rate Select
Refer to the following table.
CR[1:0]
Divide
E/215 By
XTAL = 4.0 MHz
Timeout
– 0 ms, + 32.8 ms
XTAL = 8.0 MHz
Timeout
– 0 ms, + 16.4 ms
XTAL = 12.0 MHz
Timeout
– 0 ms, + 10.9 ms
XTAL = 16.0 MHz
Timeout
– 0 ms, + 8.2 ms
00
1
32.768 ms
16.384 ms
10.923 ms
8.19 ms
01
4
131.072 ms
65.536 ms
43.691 ms
32.8 ms
10
16
524.28 ms
262.14 ms
174.76 ms
131 ms
11
64
2.098 s
1.049 s
699.05 ms
524 ms
E=
1.0 MHz
2.0 MHz
3.0 MHz
4.0 MHz
Pulse Accumulator Counter (PACNT)
Address:
Read:
Write:
Reset:
38
$1027
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
6
5
4
3
2
1
BIT 0
Unaffected by reset
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Pulse Accumulator Control (PACTL)
Address:
Read:
Write:
$1026
Bit 7
6
5
4
3
2
1
Bit 0
DDRA7
PAEN
PAMOD
PEDGE
DDRA3
I4/O5
RTR1
RTR0
0
0
0
0
0
0
0
0
Reset:
DDRA7 — Data Direction for Port A Bit 7
0 = Input only
1 = Output
PAEN — Pulse Accumulator System Enable
0 = Pulse accumulator disabled
1 = Pulse accumulator enabled
PAMOD — Pulse Accumulator Mode
0 = Event counter
1 = Gated time accumulation
PEDGE — Pulse Accumulator Edge Control
Refer to the following table.
PAMOD
PEDGE
Action on Clock
0
0
PAI falling edge increments the counter.
0
1
PAI rising edge increments the counter.
1
0
A zero on PAI inhibits counting.
1
1
A one on PAI inhibits counting.
DDRA3 — Data Direction for Port A Bit 3
Overridden if an output compare function is configured to control the PA3
pin.
0 = Input
1 = Output
I4/O5 — Input Capture 4/Output Compare 5
Configure TI4/O5 for input capture or output compare
0 = OC5 enabled
1 = IC4 enabled
RTR[1:0] — Real-Time Interrupt (RTI) Rate
Refer to the following table.
MOTOROLA
RTR1
RTR0
E = 3 MHz
E = 2 MHz
E = 1 MHz
E = X MHz
0
0
2.731 ms
4.096 ms
8.192 ms
(E/213)
0
1
5.461 ms
8.192 ms
16.384 ms
(E/214)
1
0
10.923 ms
16.384 ms
32.768 ms
(E/215)
1
1
21.845 ms
32.768 ms
65.536 ms
(E/216)
M68HC11E Series Programming Reference Guide
39
M68HC11ERG/AD
Parallel I/O Control (PIOC)
Address: $1002
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
STAF
STAI
CWOM
HNDS
OIN
PLS
EGA
INVB
0
0
0
0
0
U
1
1
U = Unaffected
STAF — Strobe A Interrupt Status Flag
STAF is set when the selected edge occurs on strobe A. This bit can be
cleared by a read of PIOC with STAF set followed by a read of PORTCL
(simple strobed or full input handshake mode) or a write to PORTCL (output
handshake mode).
0 = No active edge detected
1 = Selected active edge detected
STAI — Strobe A Interrupt Enable Mask
0 = STAF does not request interrupt
1 = STAF requests interrupt
CWOM — Port C Wired-OR Mode (affects all eight port C pins)
0 = Port C outputs are normal CMOS outputs.
1 = Port C outputs are open-drain outputs.
HNDS — Handshake Mode Bit
0 = Simple strobe mode
1 = Full input or output handshake mode
OIN — Output or Input Handshake Select
HNDS must be set to 1 for this bit to have meaning.
0 = Input handshake
1 = Output handshake
PLS — Pulsed/Interlocked Handshake Operation
HNDS must be set to 1 for this bit to have meaning. When interlocked
handshake is selected, strobe B is active until the selected edge of strobe A
is detected.
0 = Interlocked handshake
1 = Pulsed handshake (Strobe B pulses high for two E-clock cycles.)
EGA — Active Edge for Strobe A
0 = STRA falling edge selected
1 = STRA rising edge selected
INVB — Invert Strobe B
0 = Active level is logic 0.
1 = Active level is logic 1.
40
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
STAF
Clearing
Sequence
Simple
strobed
mode
Read PIOC
with STAF = 1
then read
PORTCL
Full-input
handshake
mode
Read
PIOC with
STAF = 1 then
read PORTCL
Fulloutput
handshake
mode
Read
PIOC with
STAF = 1 then
write PORTCL
HNDS OIN
PLS
EGA
Port B
0
0
X
X
1
1
0
1
1
0 = STRB
active level
1 = STRB
active pulse
0 = STRB
active level
1 = STRB
active pulse
1
0
0
Port C
Driven
1
STRA
Follow Active Edge Follow
DDRC
DDRC
Port C
Inputs latched into
PORTCL on any
active edge on
STRA
STRB pulses
on writes
to PORTB
Inputs latched into
PORTCL on any
active edge on
STRA
Normal output
port, unaffected
in handshake
modes
Driven as outputs if
STRA at active level;
follows DDRC if
STRA not at active
level
Normal output
port, unaffected
in handshake
modes
Port A Data Register (PORTA)
Address: $1000
Read:
Write:
Reset:
Alt. Pin Function:
And/OR
NOTE:
Bit 7
6
5
4
3
2
1
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
I
PAI
OC1
0
OC2
OC1
0
OC3
OC1
0
OC4
OC1
I
OC5/IC4
OC1
I
IC1
—
I
IC2
—
I
IC3
—
I/O pins configured as high-impedance inputs have port data that is
indeterminate. The contents of the corresponding latches are dependent upon
the electrical state of the pins during reset. This is indicated by an “I” in the port
description.
Port B Data Register (PORTB)
Address: $1004
Read:
Write:
Reset:
Single Chip or Boot:
Expanded or Test:
MOTOROLA
Bit 7
6
5
4
3
2
1
Bit 0
PB7
PB6
PB5
PB4
PB3
PB2
PB2
PB0
0
PB7
ADDR15
0
PB6
ADDR14
0
PB5
ADDR13
0
PB4
ADDR12
0
PB3
ADDR11
0
PB2
ADDR10
0
PB1
ADDR9
0
PB0
ADDR8
M68HC11E Series Programming Reference Guide
41
M68HC11ERG/AD
Port C Data Register (PORTC)
Address: $1003
Read:
Write:
Reset:
Single Chip or Boot:
Expanded or Test:
Bit 7
6
5
4
3
2
1
Bit 0
PC7
PC6
PC5
PC4
PC3
PC2
PC2
PC0
0
PC7
DATA7
0
PC6
DATA6
0
PC5
DATA5
0
PC4
DATA4
0
PC3
DATA3
0
PC2
DATA2
0
PC1
DATA1
0
PC0
DATA0
Bit 7
6
5
4
3
2
1
Bit 0
PCL7
PCL6
PCL5
PCL4
PCL3
PCL2
PCL1
PCL0
Port C Latched Data Register (PORTCL)
Address: $1005
Read:
Write:
Reset:
Indeterminate after reset
Port D Data Register (PORTD)
Address: $1008
Bit 7
6
Read:
Write:
Reset:
Alt. Pin Function
0
—
5
4
3
2
1
Bit 0
PD5
PD4
PD3
PD2
PD1
PD0
I
SS
I
SCK
I
TxD
I
RxD
0
—
I
I
SDO/MOSI SDI/MISO
= Unimplemented
Port E Data Register (PORTE)
Address: $100A
Read:
Write:
Reset:
Alt. Pin Function
Bit 7
6
5
4
3
2
1
Bit 0
PE7
PE6
PD5
PE4
PE3
PE2
PE1
PE0
I
AN7
I
AN6
I
AN5
I
AN4
I
AN3
I
AN2
I
AN1
I
AN0
EEPROM Programming Control Register (PPROG)
Address: $103B
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
ODD
EVEN
ELAT(1)
BYTE
ROW
ERASE
EELAT
EPGM
0
0
0
0
0
0
0
0
1. MC68HC711E9 and MC68S711E9 only
ODD — Program Odd Rows in Half of EEPROM (TEST)
EVEN — Program Even Rows in Half of EEPROM (Test) Bit
42
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
ELAT — EPROM/OTPROM Latch Control
Implemented on MC68HC711E9 only
0 = EPROM/OTPROM address and data bus configured for normal reads
and cannot be programmed
1 = EPROM/OTPROM address and data bus configured for
programming and cannot be read
BYTE — Byte/Other EEPROM Erase Mode
0 = Row or bulk erase mode used
1 = Erase only one byte of EEPROM
ROW — Row/All EEPROM Erase Mode
Only valid when BYTE = 0
0 = Erase all of EEPROM
1 = Erase only one 16-byte row of EEPROM
BYTE
ROW
Action
0
0
Bulk erase (all bytes)
0
1
Row erase (16 bytes)
1
0
Byte erase
1
1
Byte erase
ERASE — Erase/Normal Control for EEPROM
0 = Normal read or program mode
1 = Erase mode
EELAT — EEPROM Latch Control
0 = EEPROM address and data bus configured for normal reads
1 = EEPROM address and data bus configured for programming or
erasing
EPGM —EPROM/EEPROM Programming Voltage Enable
0 = Programming voltage to array disconnected (EEPROM only on
MC68HC(7)11E20)
1 = Programming voltage to array connected (EEPROM only on
MC68HC(7)11E20)
Serial Communication Interface Control Register 1 (SCCR1)
Address: $102C
Read:
Write:
Reset:
Bit 7
6
R8
T8
I
5
I
0
= Unimplemented
4
3
2
1
Bit 0
0
0
0
0
M
0
R8 — Receive Data Bit 8
0 = SCI receiver configured for 8-bit data characters.
1 = If M bit is set, R8 stores the ninth data bit in the receive data
character.
MOTOROLA
M68HC11E Series Programming Reference Guide
43
M68HC11ERG/AD
T8 — Transmit Data Bit 8
0 = SCI transmitter configured for 8-bit data characters.
1 = If M bit is set, R8 stores the ninth data bit in the transmit data
character.
Bit 5 — Unimplemented
Always reads 0
M — Mode Bit (select character format)
0 = Start bit, 8 data bits, 1 stop bit
1 = Start bit, 9 data bits, 1 stop bit
WAKE — Wakeup by Address Mark/Idle
0 = Wakeup by IDLE line recognition
1 = Wakeup by address mark (most significant data bit set)
Bits [2:0] — Unimplemented
Always read 0
Serial Communications Interface Control Register 2 (SCCR2)
Address: $102D
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
TIE
TCIE
RIE
ILIE
TE
RE
RWU
SBK
0
0
0
0
0
0
0
0
TIE — Transmit Interrupt Enable
0 = TDRE interrupts disabled
1 = SCI interrupt requested when TDRE status flag is set
TCIE — Transmit Complete Interrupt Enable
0 = TC interrupts disabled
1 = SCI interrupt requested when TC status flag is set
RIE — Receiver Interrupt Enable
0 = RDRF and OR interrupts disabled
1 = SCI interrupt requested when RDRF flag or the OR status flag is set
ILIE — Idle-Line Interrupt Enable
0 = IDLE interrupts disabled
1 = SCI interrupt requested when IDLE status flag is set
TE — Transmitter Enable
0 = Transmitter disabled
1 = Transmitter enabled
RE — Receiver Enable
0 = Receiver disabled
1 = Receiver enabled
RWU — Receiver Wakeup Control
0 = Normal SCI receiver
1 = Wakeup enabled and receiver interrupts inhibited
SBK — Send Break
0 = Break generator off
1 = Break codes generated as long as SBK = 1
44
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Serial Communications Interface Data Register (SCDR)
Address: $102F
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
R7/T7
R6/T6
R5/T5
R4/T4
R3/T3
R2/T2
R1/T1
R0/T0
I
I
I
I
I
I
I
I
R[7:0]/T[7:0] — Receiver/Transmitter Data Bits [7:0]
Receive and transmit are double buffered. Reads access the receive data
buffer, and writes access the transmit data buffer. When the M bit in SCCR1
is set, R8 and T8 in SCCR1 store the ninth bit in receive and transmit data
characters.
Serial Communications Interface Status Register (SCSR)
Address: $102E
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
TDRE
TC
RDRF
IDLE
OR
NF
FE
1
0
0
0
0
0
1
Bit 0
0
= Unimplemented
TDRE — Transmit Data Register Empty Flag
This flag is set when SCDR is empty. Clear the TDRE flag by reading SCSR
with TDRE set and then writing to SCDR.
0 = SCDR busy
1 = SCDR empty
TC — Transmit Complete Flag
This flag is set when the transmitter is idle (no data, preamble, or break
transmission in progress). Clear the TC flag by reading SCSR with TC set
and then writing to SCDR.
0 = Transmitter busy
1 = Transmitter idle
RDRF — Receive Data Register Full Flag
This flag is set if a received character is ready to be read from SCDR. Clear
the RDRF flag by reading SCSR with RDRF set and then reading SCDR.
0 = SCDR empty
1 = SCDR full
IDLE — Idle Line Detected Flag
This flag is set if the RxD line is idle. Once cleared, IDLE is not set again until
the RxD line has been active and becomes idle again. The IDLE flag is
inhibited when RWU = 1. Clear IDLE by reading SCSR with IDLE set and
then reading SCDR.
0 = RxD line active
1 = RxD line idle
MOTOROLA
M68HC11E Series Programming Reference Guide
45
M68HC11ERG/AD
OR — Overrun Error Flag
OR is set if a new character is received before a previously received
character is read from SCDR. Clear the OR flag by reading SCSR with OR
set and then reading SCDR.
0 = No overrun
1 = Overrun detected
NF — Noise Error Flag
NF is set if majority sample logic detects anything other than a unanimous
decision. Clear NF by reading SCSR with NF set and then reading SCDR.
0 = Unanimous decision
1 = Noise detected
FE — Framing Error Flag
FE is set when a 0 is detected where a stop bit was expected. Clear the FE
flag by reading SCSR with FE set and then reading SCDR.
0 = Stop bit detected
1 = Zero detected
Bit 0 — Unimplemented
Always reads 0
Serial Peripheral Interface Control Register (SPCR)
Address: $1028
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
SPIE
SPE
DWOM
MSTR
CPOL
CPHA
SPR1
SPR0
0
0
0
0
0
1
U
U
SPIE — Serial Peripheral Interrupt Enable
0 = SPI interrupts disabled
1 = SPI interrupts enabled
SPE — Serial Peripheral System Enable
0 = SPI off
1 = SPI on
DWOM — Port D Wired-OR Mode Option for Port D Pins PD[5:0]
0 = Normal CMOS outputs
1 = Open-drain outputs
MSTR — Master Mode Select
0 = Slave mode
1 = Master mode
CPOL, CPHA — Clock Polarity, Clock Phase
Refer to Figure 7
SPR[1:0] — SPI Clock Rate Select
See the following table.
46
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
SPR1 SPR0
Divide
E Clock By
Frequency at
E = 1 MHz (Baud)
Frequency at
E = 2 MHz (Baud)
Frequency at
E = 3 MHz (Baud)
Frequency at
E = 4 MHz (Baud)
0
0
2
500 kHz
1.0 MHz
1.5 MHz
2 MHz
0
1
4
250 kHz
500 kHz
750 kHz
1 MHz
1
0
16
62.5 kHz
125 kHz
187.5 kHz
250 kHz
1
1
32
31.3 kHz
62.5 kHz
93.8 kHz
125 kHz
SCK CYCLE #
1
2
3
4
5
6
7
8
SCK (CPOL = 0)
SCK (CPOL = 1)
SAMPLE INPUT
MSB
(CPHA = 0) DATA OUT
6
5
4
3
2
1
LSB
SAMPLE INPUT
MSB
(CPHA = 1) DATA OUT
6
5
4
3
2
1
LSB
SS (TO SLAVE)
SLAVE CPHA = 1 TRANSFER IN PROGRESS
3
MASTER TRANSFER IN PROGRESS
2
4
SLAVE CPHA = 0 TRANSFER IN PROGRESS
1
5
1. SS ASSERTED
2. MASTER WRITES TO SPDR
3. FIRST SCK EDGE
4. SPIF SET
5. SS NEGATED
Figure 7. Serial Peripheral Interface Transfer Format
Serial Peripheral Interface Data Register (SPDR)
Address: $102A
Read:
Write:
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
6
5
4
3
2
1
BIT 0
SPI is double buffered in, single buffered out.
MOTOROLA
M68HC11E Series Programming Reference Guide
47
M68HC11ERG/AD
Serial Peripheral Interface Status Register (SPSR)
Address: $1029
Read:
Write:
Reset:
Bit 7
6
SPIF
WCOL
0
5
4
3
2
1
Bit 0
0
1
U
U
MODF
0
0
0
= Unimplemented
SPIF — SPI Transfer Complete Flag
This flag is set when an SPI transfer is complete (after eight SCK cycles in
a data transfer). Clear this flag by reading SPSR (with SPIF = 1), then
access SPDR.
0 = No SPI transfer complete or SPI transfer still in progress
1 = SPI transfer complete
WCOL — Write Collision
This flag is set if the MCU tries to write data into SPDR while an SPI data
transfer is in progress. Clear this flag by reading SPSR (with WCOL = 1),
then access SPDR.
0 = No write collision error
1 = SPDR written while SPI transfer in progress
Bit 5 — Unimplemented
Always reads 0
MODF — Mode Fault (Mode fault terminates SPI operation)
MODF is set when SS is pulled low while MSTR = 1. Clear this flag by
reading SPCR with MODF set, then write to SPCR.
0 = No mode fault error
1 = SS pulled low in master mode
Bits [3:0] — Unimplemented
Always reads 0
Timer Count Register (TCNT)
Address: $100E — High
Bit 7
6
Read:
BIT 15
14
Write:
Reset:
0
0
Address: $100F — Low
Bit 7
6
Read:
BIT 7
6
Write:
Reset:
0
0
= Unimplemeted
5
3
2
1
Bit 0
13
4
12
11
10
9
BIT 8
0
0
0
0
0
0
5
4
4
3
2
1
Bit 0
5
3
2
1
BIT 0
0
0
0
0
0
0
In normal modes, TCNT is a read-only register.
48
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Timer Control Register 1 (TCTL1)
Address: $1020
Read:
Write:
Bit 7
6
5
4
3
2
1
Bit 0
OM2
OL2
OM3
OL3
OM4
OL4
OM5
OL5
0
0
0
0
0
0
0
0
Reset:
OM[2:5] — Output Mode
OL[2:5] — Output Level
OMx
OLx
0
0
Timer disconnected from output pin logic
Action Taken on Successful Compare
0
1
Toggle OCx output line
1
0
Clear OCx output line to 0
1
1
Set OCx output line to 1
Timer Control Register 2 (TCTL2)
Address: $1021
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
EDG4B
EDG4A
EDG1B
EDG1A
EDG2B
EDG1B
EDG3B
EDG3A
0
0
0
0
0
0
0
0
EDGxB
EDGxA
0
0
Capture disabled
Configuration
0
1
Capture on rising edges only
1
0
Capture on falling edges only
1
1
Capture on any edge
Factory Test Register (TEST1)
Address: $103E
Bit 7
Read:
Write:
Reset:
6
TILOP
0
5
4
3
2
1
Bit 0
OCCR
CBYP
DISR
FCM
FCOP
TCON
0
0
—
0
0
0
0
= Unimplemented
TILOP — Test Illegal Opcode (Test modes only)
Bit 6 — Unimplemented
Always reads 0
OCCR — Output Condition Code Register to Timer Port (Test modes only)
CBYP — Timer Divider Chain Bypass (Test modes only)
DISR — Disable Reset from COP and Clock Monitor (Special modes only
(SMOD = 1))
MOTOROLA
M68HC11E Series Programming Reference Guide
49
M68HC11ERG/AD
FCM — Force Clock Monitor Failure (Test modes only)
FCOP — Force COP Watchdog Failure (Test modes only)
TCON — Test Configuration (Test modes only)
Timer Interrupt Flag 1 Register (TFLG1)
Address: $1023
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
OC1F
OC2F
OC3F
OC4F
IR/O5F
IC1F
1C2F
IC3F
0
0
0
0
0
0
0
0
Clear flags by writing a 1 to the corresponding bit position(s).
OC1F–OC4F — Output Compare x Flag
Set each time the counter matches output compare x value.
I4/O5F — Input Capture 4/Output Compare 5 Flag
Set by IC4 or OC5, depending on which function was enabled by I4/O5 of
PACTL.
IC1F–IC3F — Input Capture x Flag
Set each time a selected active edge is detected on the ICx input line.
Timer Interrupt Flag 2 Register (TFLG2)
Address: $1025
Read:
Write:
Reset:
Bit 7
6
5
4
TOF
RTIF
PAOVF
PAIF
0
0
0
0
3
2
1
Bit 0
0
0
0
0
= Unimplemented
Clear flags by writing a 1 to the corresponding bit position(s).
TOF — Timer Overflow Flag
Set when TCNT changes from $FFFF to $0000
RTIF — Real-Time (Periodic) Interrupt Flag
The RTIF status bit is automatically set to 1 at the end of every RTI period.
To clear RTIF, write a byte to TFLG2 with bit 6 set.
PAOVF — Pulse Accumulator Overflow Flag
Set when PACNT changes from $FF to $00
PAIF — Pulse Accumulator Input Edge Flag
Set each time a selected active edge is detected on the PAI input line.
Bits [3:0] — Unimplemented
Always reads 0
50
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Timer Input Capture 4/Output Compare 5 Register (TI4/O5)
Address: $101E — High
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
1
1
1
1
1
1
1
1
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
1
1
1
1
1
1
1
1
5
4
3
2
1
Bit 0
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
Address: $101F — Low
Read:
Write:
Reset:
Timer Input Capture Registers (TIC1–TIC3)
TIC1 — Address: $1010 — High
Bit 7
6
Read:
BIT 15
BIT 14
Write:
Reset:
Address: $1011 — Low
Bit 7
6
Read:
BIT 7
BIT 6
Write:
Reset:
TIC2 — Address: $1012 — High
Bit 7
6
Read:
BIT 15
BIT 14
Write:
Reset:
Address: $1013 — Low
Bit 7
6
Read:
BIT 7
BIT 6
Write:
Reset:
TIC3 — Address: $1014 — High
Bit 7
6
Read:
BIT 15
BIT 14
Write:
Reset:
Address: $1015 — Low
Read:
Write:
Reset:
MOTOROLA
Unaffected by reset
5
4
3
2
1
Bit 0
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unaffected by reset
5
4
3
2
1
Bit 0
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
Unaffected by reset
5
4
3
2
1
Bit 0
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unaffected by reset
5
4
3
2
1
Bit 0
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
Unaffected by reset
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unaffected by reset
M68HC11E Series Programming Reference Guide
51
M68HC11ERG/AD
Timer Interrupt Mask Register 1 (TMSK1)
Address: $1022
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
OC1I
OC2I
OC3I
OC4I
I4/O5I
IC1I
IC2I
IC3I
0
0
0
0
0
0
0
0
OC1I–OC4I — Output Compare x Interrupt Enable
If the OCxI enable bit is set when the OCxF flag bit is set, a hardware
interrupt sequence is requested.
I4/O5I — Input Capture 4/Output Compare 5 Interrupt Enable
When I4/O5 in PACTL is 1, I4/O5I is the input capture 4 interrupt enable bit.
When I4/O5 in PACTL is 0, I4/O5I is the output compare 5 interrupt enable
bit.
IC1I–IC3I — Input Capture x Interrupt Enable
If the ICxI enable bit is set when the ICxF flag bit is set, a hardware interrupt
sequence is requested.
Timer Interrupt Mask Register 2 (TMSK2)
Address: $1024
Read:
Write:
Reset:
Bit 7
6
5
4
TOI
RTII
PAOVI
PAII
0
0
0
= Unimplemented
0
3
0
2
0
1
Bit 0
PR1
PR0
0
0
TOI — Timer Overflow Interrupt Enable
0 = TOF interrupts disabled
1 = Interrupt requested when TOF is set to 1
RTII — Real-Time Interrupt Enable
0 = RTIF interrupts disabled
1 = Interrupt requested when RTIF is set to 1
PAOVI — Pulse Accumulator Input Edge Interrupt Enable
0 = PAOVF interrupts disabled
1 = Interrupt requested when PAOVF is set to 1
PAII — Pulse Accumulator Input Edge Interrupt Enable
0 = PAIF interrupts disabled
1 = Interrupt requested when PAIF is set to 1
Bits [3:2] — Unimplemented
Always reads 0
PR[1:0] — Timer Prescaler Select
In normal modes, PR1 and PR0 can only be written once, and the write must
occur within 64 cycles after reset.
PR1
0
0
1
1
52
PR0
0
1
0
1
M68HC11E Series Programming Reference Guide
Prescaler
÷1
÷4
÷8
÷ 16
MOTOROLA
M68HC11ERG/AD
M68HC11E Series Registers
Timer Output Compare Registers (TOC1–TOC4)
TOC1 — Address: $1016 — High
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
1
1
1
1
1
1
1
1
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
1
1
1
1
1
1
1
1
Address: $1017 — Low
Read:
Write:
Reset:
TOC2 — Address: $1018 — High
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
1
1
1
1
1
1
1
1
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
1
1
1
1
1
1
1
1
Address: $1019 — Low
Read:
Write:
Reset:
TOC3 — Address: $101A — High
Read:
Write:
Reset:
Bit 7
6
5
4
3
2
1
Bit 0
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
1
1
1
1
1
1
1
1
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
1
1
1
1
1
1
1
1
Address: $101B — Low
Read:
Write:
Reset:
TOC4 — Address: $101C — High
Read:
Write:
Reset:
Read:
Write:
Reset:
MOTOROLA
Bit 7
6
5
4
3
2
1
Bit 0
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
1
1
1
1
1
1
1
1
Bit 7
6
5
4
3
2
1
Bit 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
1
1
1
1
1
1
1
1
M68HC11E Series Programming Reference Guide
53
M68HC11ERG/AD
* XIRQ/VPPE
IRQ
17
18
19
PD0/RxD
20
47 PE2/AN2
48 PE6/AN6
50 PE7/AN7
49 PE3/AN3
VSS
52 VRH
51 VRL
3 MODA/LIR
2 MODB/VSTBY
32
33
PA1/IC2
25
PD5/SS
VDD
* VPPE applies only to devices with EPROM/OTPROM.
PA2/IC1
24
PD4/SCK
31
23
PD3/MOSI
30
22
PA3/OC5/IC4/OC1
21
PD1/TxD
PD2/MISO
36
29
16
39
38
37
PA4/OC4/OC1
PC7/ADDR7/DATA7
RESET
41
40
M68HC11 E SERIES
PA5/OC3/OC1
14
15
1
PC5/ADDR5/DATA5
PC6/ADDR6/DATA6
42
28
12
13
45
44
43
27
PC3/ADDR3/DATA3
PC4/ADDR4/DATA4
46
PA7/PAI/OC1
PA6/OC2/OC1
PC2/ADDR2/DATA2
8
9
10
11
26
XTAL
PC0/ADDR0/DATA0
PC1/ADDR1/DATA1
5 E
4 STRA/AS
7 EXTAL
6 STRB/R/W
M68HC11 E Series Pin Assignments
35
34
PE5/AN5
PE1/AN1
PE4/AN4
PE0/AN0
PB0/ADDR8
PB1/ADDR9
PB2/ADDR10
PB3/ADDR11
PB4/ADDR12
PB5/ADDR13
PB6/ADDR14
PB7/ADDR15
PA0/IC3
52
51
50
49
48
47
46
45
44
43
42
41
40
PA1/IC2
PA2/IC1
PA3/OC5/IC4/OC1
PA4/OC4/OC1
PA5/OC3/OC1
PA6/OC2/OC1
PA7/PAI/OC1
VDD
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TxD
Figure 8. Pin Assignments for 52-Pin PLCC and CLCC
M68HC11 E SERIES
39
38
37
36
35
34
33
32
31
30
29
28
27
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
10
11
12
13
PD0/RxD
IRQ
XIRQ/VPPE*
RESET
PC7/ADDR7/DATA7
PC6/ADDR6/DATA6
PC5/ADDR5/DATA5
PC4/ADDR4/DATA4
PC3/ADDR3/DATA3
PC2/ADDR2/DATA2
PC1/ADDR1/DATA1
PC0/ADDR0/DATA0
XTAL
PE2/AN2
PE6/AN6
PE3/AN3
PE7/AN7
VRL
VRH
VSS
MODB/VSTBY
MODA/LIR
STRA/AS
E
STRB/R/W
EXTAL
PA0/IC3
PB7/ADDR15
PB6/ADDR14
PB5/ADDR13
PB4/ADDR12
PB3/ADDR11
PB2/ADDR10
PB1/ADDR9
PB0/ADDR8
PE0/AN0
PE4/AN4
PE1/AN1
PE5/AN5
* VPPE applies only to devices with EPROM/OTPROM.
Figure 9. Pin Assignments for 52-Pin TQFP
54
M68HC11E Series Programming Reference Guide
MOTOROLA
PA0/IC3
NC
NC
NC
PB7/ADDR15
PB6/ADDR14
PB5/ADDR13
PB4/ADDR12
1
PB3/ADDR11
PB2/ADDR10
PB1/ADDR9
PB0/ADDR8
PE0/AN0
PE4/AN4
PE1/AN1
PE5/AN5
9
10
11
12
13
14
15
16
56
55
54
53
52
51
50
49
64
63
62
61
60
59
58
57
PA1/IC2
PA2/IC1
PA3/OC5/IC4/OC1
NC
NC
PA4/OC4/OC1
PA5/OC3/OC1
PA6/OC2/OC1
PA7/PAI/OC1
VDD
PD5/SS
PD4/SCK
PD3/MOSI
PD2/MISO
PD1/TxD
VSS
M68HC11ERG/AD
M68HC11 E Series Pin Assignments
2
3
M68HC11 E SERIES
NC
PD0/RxD
IRQ
XIRQ/VPPE*
NC
RESET
PC7/ADDR7/DATA7
PC6/ADDR6/DATA6
PC5/ADDR5/DATA5
PC4/ADDR4/DATA4
PC3/ADDR3/DATA3
PC2/ADDR2/DATA2
PC1/ADDR1/DATA1
NC
PC0/ADDR0/DATA0
XTAL
PE2/AN2
PE6/AN6
PE3/AN3
PE7/AN7
VRL
VRH
VSS
VSS
MODB/VSTBY
NC
MODA/LIR
STRA/AS
E
STRB/R/W
EXTAL
NC
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
4
5
6
7
8
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
* VPPE applies only to devices with EPROM/OTPROM.
Figure 10. Pin Assignments for 64-Pin QFP
MOTOROLA
M68HC11E Series Programming Reference Guide
55
M68HC11ERG/AD
VSS
1
56
EVSS
MODB/VSTBY
2
55
VRH
MODA/LIR
3
54
VRL
STRA/AS
4
53
PE7/AN7
E
5
52
PE3/AN3
STRB/R/W
6
51
PE6/AN6
EXTAL
7
50
PE2/AN2
XTAL
8
49
PE5/AN5
PC0/ADDR0/DATA0
9
48
PE1/AN1
PC1/ADDR1/DATA1
10
47
PE4/AN4
PC2/ADDR2/DATA2
11
46
PE0/AN0
PC3/ADDR3/DATA3
12
45
PB0/ADDR8
PC4/ADDR4/DATA4
13
44
PB1/ADDR9
PC5/ADDR5/DATA5
14
43
PB2/ADDR10
PC6/ADDR6/DATA6
15
M68HC11 E SERIES 42
PB3/ADDR11
PC7/ADDR7/DATA7
16
41
PB4/ADDR12
RESET
17
40
PB5/ADDR13
* XIRQ/VPPE
18
39
PB6/ADDR14
IRQ
19
38
PB7/ADDR15
PD0/RxD
20
37
PA0/IC3
EVSS
21
36
PA1/IC2
PD1/TxD
22
35
PA2/IC1
PD2/MISO
23
34
PA3/OC5/IC4/OC1
PD3/MOSI
24
33
PA4/OC4/OC1
PD4/SCK
25
32
PA5/OC3/OC1
PD5/SS
26
31
PA6/OC2/OC1
VDD
27
30
PA7/PAI/OC1
VSS
28
29
EVDD
* VPPE applies only to devices with EPROM/OTPROM.
Figure 11. Pin Assignments for 56-Pin SDIP
56
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
M68HC11 E Series Pin Assignments
PA7/PAI/OC1
1
48
VDD
PA6/OC2/OC1
2
47
PD5/SS
PA5/OC3/OC1
3
46
PD4/SCK
PA4/OC4/OC1
4
45
PD3/MOSI
PA3/OC5/IC4/OC1
5
44
PD2/MISO
PA2/IC1
6
43
PD1/TxD
PA1/IC2
7
42
PD0/RxD
PA0/IC3
8
41
IRQ
PB7/ADDR15
9
40
XIRQ
PB6/ADDR14
10
39
RESET
PB5/ADDR13
11
38
PC7/ADDR7/DATA7
PB4/ADDR12
12
37
PC6/ADDR6/DATA6
PB3/ADDR11
13
36
PC5/ADDR5/DATA5
PB2/ADDR10
14
35
PC4/ADDR4/DATA4
PB1/ADDR9
15
34
PC3/ADDR3/DATA3
PB0/ADDR8
16
33
PC2/ADDR2/DATA2
PE0/AN0
17
32
PC1/ADDR1/DATA1
PE1/AN1
18
31
PC0/ADDR0/DATA0
PE2/AN2
19
30
XTAL
PE3/AN3
20
29
EXTAL
VRL
21
28
STRB/R/W
VRH
22
27
E
VSS
23
26
STRA/AS
MODB/VSTBY
24
25
MODA/LIR
MC68HC811E2
Figure 12. Pin Assignments for 48-Pin DIP (MC68HC811E2)
MOTOROLA
M68HC11E Series Programming Reference Guide
57
M68HC11ERG/AD
Hexadecimal to ASCII Conversion
Table 2. Hexadecimal to ASCII Conversion
58
Hex
ASCII
Hex
ASCII
Hex
ASCII
Hex
ASCII
$00
NUL
$20
SP space
$40
@
$60
` grave
$01
SOH
$21
!
$41
A
$61
a
$02
STX
$22
“ quote
$42
B
$62
b
$03
ETX
$23
#
$43
C
$63
c
$04
EOT
$24
$
$44
D
$64
d
$05
ENQ
$25
%
$45
E
$65
e
$06
ACK
$26
&
$46
F
$66
f
$07
BEL beep
$27
‘ apost.
$47
G
$67
g
$08
BS back
sp
$28
(
$48
H
$68
h
$09
HT tab
$29
)
$49
I
$69
i
$0A
LF
linefeed
$2A
*
$4A
J
$6A
j
$0B
VT
$2B
+
$4B
K
$6B
k
$0C
FF
$2C
, comma
$4C
L
$6C
l
$0D
CR return
$2D
$4D
M
$6D
m
$0E
SO
$2E
- dash
. period
$4E
N
$6E
n
$0F
SI
$2F
/
$4F
O
$6F
o
$10
DLE
$30
0
$50
P
$70
p
$11
DC1
$31
1
$51
Q
$71
q
$12
DC2
$32
2
$52
R
$72
r
$13
DC3
$33
3
$53
S
$73
s
$14
DC4
$34
4
$54
T
$74
t
$15
NAK
$35
5
$55
U
$75
u
$16
SYN
$36
6
$56
V
$76
v
$17
ETB
$37
7
$57
W
$77
w
$18
CAN
$38
8
$58
X
$78
x
$19
EM
$39
9
$59
Y
$79
y
$1A
SUB
$3A
:
$5A
Z
$7A
z
$1B
ESCAPE
$3B
;
$5B
[
$7B
{
$1C
FS
$3C
<
$5C
\
$7C
|
$1D
GS
$3D
=
$5D
]
$7D
}
$1E
RS
$3E
>
$5E
^
$7E
~
$1F
US
$3F
?
$5F
_ under
$7F
DEL
delete
M68HC11E Series Programming Reference Guide
MOTOROLA
M68HC11ERG/AD
Hexadecimal to Decimal Conversion
Hexadecimal to Decimal Conversion
To convert a hexadecimal number (up to four hexadecimal digits) to decimal,
look up the decimal equivalent of each hexadecimal digit in Table 3. The
decimal equivalent of the original hexadecimal number is the sum of the
weights found in the table for all hexadecimal digits.
Table 3. Hexadecimal to/from Decimal Conversion
15
Bit
15
12
4th Hex Digit
Hex
8
7
Bit
0
8
7
4 3
0
11
3rd Hex Digit
Decimal
Hex
Decimal
2nd Hex Digit
Hex
Decimal
1st Hex Digit
Hex
Decimal
0
0
0
0
0
0
0
0
1
4,096
1
256
1
16
1
1
2
8,192
2
512
2
32
2
2
3
12,288
3
768
3
48
3
3
4
16,384
4
1,024
4
64
4
4
5
20,480
5
1,280
5
80
5
5
6
24,576
6
1,536
6
96
6
6
7
28,672
7
1,792
7
112
7
7
8
32,768
8
2,048
8
128
8
8
9
36,864
9
2,304
9
144
9
9
A
40,960
A
2,560
A
160
A
10
B
45,056
B
2,816
B
176
B
11
C
49,152
C
3,072
C
192
C
12
D
53,248
D
3,328
D
208
D
13
E
57,344
E
3,484
E
224
E
14
F
61,440
F
3,840
F
240
F
15
Decimal to Hexadecimal Conversion
To convert a decimal number (up to 65,53510) to hexadecimal, find the largest
decimal number in Table 3 that is less than or equal to the number you are
converting. The corresponding hexadecimal digit is the most significant
hexadecimal digit of the result. Subtract the decimal number found from the
original decimal number to get the remaining decimal value. Repeat the
procedure using the remaining decimal value for each subsequent
hexadecimal digit.
MOTOROLA
M68HC11E Series Programming Reference Guide
59
M68HC11ERG/AD
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© Motorola Inc. 2003
M68HC11ERG/AD
Rev. 2
10/2003