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MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Skip condition
Detailed description
Carry
flag
CY
52
MITSUBISHI MICROCOMPUTERS
4570 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
Function
Mnemonic
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Hexadecimal
notation
Type of
instructions
Parameter
Number
of
words
Number
of
cycles
Instruction code
–
Transfers the contents of the high-order 2 bits of timer 1 to register W5, and transfers the contents of
the low-order 8 bits of timer 1 to registers A and B.
When stopping (W10=0), transfers the contents of register W5 to the contents of the high-order 2 bits of
timer 1 and of the timer 1 reload register, and transfers the contents of registers A and B to the contents
of the low-order 8 bits of timer 1 and of the timer 1 reload register.
When operating (W10=1), transfers the contents of register W5 to the contents of the high-order 2 bits
of the timer 1 reload register, and transfers the contents of registers A and B to the contents of the low-
order 8 bits of the timer 1 reload register.
Transfers the contents of timer 2 to registers A and B.
Transfers the contents of registers A and B to timer 2 and timer 2 reload register.
Transfers the contents of registers A and B to timer 2 reload register.
Transfers the contents of timer 3 to registers A and B.
Transfers the contents of registers A and B to timer 3 and timer 3 reload register R3L.
Transfers the contents of registers A and B to timer 3 reload register R3H.
TAB1
T1AB
TAB2
T2AB
TR2AB
TAB3
T3AB
T3HAB
Timer
operation
1
1001110000
1000110000
1001110001
1000110001
1000111010
1001110010
1000110010
1000111101
27 0
23 0
27 1
23 1
23 A
27 2
23 2
23 D
(W5)
← (T19, T18)
(B)
← (T17–T14)
(A)
← (T13–T10)
At timer 1 stop (W10=0),
(R19, R18)
← (W5)
(T19, T18)
← (W5)
(R17–R14)
← (B)
(T17–T14)
← (B)
(R13–R10)
← (A)
(T13–T10)
← (A)
At timer 1 operating (W10=1),
(R19, R18)
← (W5)
(R17–R14)
← (B)
(R13–R10)
← (A)
(B)
← (T27–T24)
(A)
← (T23–T20)
(R27–R24)
← (B)
(T27–T24)
← (B)
(R23–R20)
← (A)
(T23–T20)
← (A)
(R27–R24)
← (B)
(R23–R20)
← (A)
(B)
← (T37–T34)
(A)
← (T33–T30)
(R3L7–R3L4)
← (B)
(T37–T34)
← (B)
(R3L3–R3L0)
← (A)
(T33–T30)
← (A)
(R3H7–R3H4)
← (B)
(R3H3–R3H0)
← (A)
MACHINE INSTRUCTIONS (CONTINUED)