M34551M4 Datasheet, PDF (48/68 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER

MITSUBISHI MICROCOMPUTERS
4551 Group
SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for
INFRARED REMOTE CONTROL TRANSMITTER
Skip condition
Detailed description
–
– Adds the contents of M(DP) to register A. Stores the result in register A. The contents of carry flag CY
remains unchanged.
–
0/1 Adds the contents of M(DP) and carry flag CY to register A. Stores the result in register A and carry flag
CY.
Overflow = 0
–
–
–
–
(CY) = 0
–
–
–
– Adds the value n in the immediate field to register A.
The contents of carry flag CY remains unchanged.
Skips the next instruction when there is no overflow as the result of operation.
– Performs the AND operation between the contents of register A and the contents of M(DP), and stores
the result in register A.
– Performs the OR operation between the contents of register A and the contents of M(DP), and stores
the result in register A.
1 Sets carry flag CY to “1.”
0 Clears carry flag CY to “0.”
– Skips the next instruction when the contents of carry flag CY is “0.”
– Stores the one’s complement for register A’s contents in register A.
0/1 Rotates the contents of register A including the contents of carry flag CY to the right by 1 bit.
– Sets the contents of bit j (bit specified by the value j in the immediate field) of M(DP) to “1.”
–
– Clears the contents of bit j (bit specified by the value j in the immediate field) of M(DP) to “0.”
(Mj(DP)) = 0
j = 0 to 3
(A) = (M(DP))
(A) = n
– Skips the next instruction when the contents of bit j (bit specified by the value j in the immediate field)
of M(DP) is “0.”
– Skips the next instruction when the contents of register A is equal to the contents of M(DP).
– Skips the next instruction when the contents of register A is equal to the value n in the immediate field.
48