UPD753012GC NEC, UPD753012GC Datasheet - Page 51
UPD753012GC
Manufacturer Part Number
UPD753012GC
Description
4-BIT SINGLE-CHIP MICROCONTROLLER
Manufacturer
NEC
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Notes 1.
Remark PC
Instruction
Branch
instructions
Group
2.
The above operations in the shaded boxes can be performed only in the Mk II mode. The other
operations can be performed only in the Mk I mode.
Only the following bits are valid for the B register.
BR
BRA
Mnemonic
14
Note 1
is fixed to 0 when the PD753017 is set in the Mk I mode.
Note1
PD753012, 753016 : low-order 2 bits
PD753017
addr
addr1
!addr
$addr
$addr1
PCDE
PCXA
BCDE
BCXA
!addr
!addr1
Operand
Note 2
Note2
: low-order 3 bits
Number
of Bytes
–
–
3
1
1
2
2
2
2
3
3
of Machine
Number
Cycles
–
–
3
2
2
3
3
3
3
3
3
PC
•
PC
PC
•
PC
PC
•
PC
PC
•
PC
PC
•
PC
PC
•
PC
PC
•
PC
•
PC
•
PC
PD753017
PD753017
PD753017
PD753017
PD753017
PD753017
PD753017
PD753012, 753016
PD753017
Select appropriate instruction from
among BR !addr, BRCB !caddr, and
BR $addr according to the assembler
being used.
Select appropriate instruction from
among BR !addr, BRA !caddr1 BRCB
13–0
14–0
13–0
14
13–0
14–0
13–0
14–0
13–0
14–0
13–0
14–0
13–0
14–0
13–0
14–0
!caddr, and BR $addr according to
the assembler being used.
BR !addr
BRCB !caddr
BR $addr
BR !addr
BRA !addr1
BRCB !caddr
BR $addr
0, PC
addr
addr1
addr
addr
addr1
PC
PC
PC
PC
B
B
B
B
addr
addr1
1,0
2–0
1,0
2–0
13–8
14–8
13–8
14–8
+CDE
+CXA
+CDE
+CXA
13–0
+DE
+DE
+XA
+XA
Operation
PD753012, 753016, 753017
addr
Addressing
Area
*11
*11
*11
*11
*6
*6
*7
*6
*6
*6
Skip Condition
51
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