4571 Datasheet, PDF (114/126 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4571 Group
Skip condition
Detailed description
−
−
−
−
−
−
−
−
−
−
−
(D(Y)) = 0
Y = 0 to 4
−
−
−
−
−
−
−
−
−
−
−
− Transfers the input of port P0 to register A.
− Outputs the contents of register A to port P0.
− Transfers the input of port P1 to register A.
− Outputs the contents of register A to port P1.
− Transfers the input of port P2 to the low-order 2 bits (A1, A0) of register A.
“0” is stored to the high-order 2 bits (A3, A2) of register A.
− Outputs the contents of the low-order 2 bits (A1, A0) of register A to port P2.
− Transfers the input of port P3 to the low-order 2 bits (A1, A0) of register A.
“0” is stored to the high-order 2 bits (A3, A2) of register A.
− Outputs the contents of the low-order 2 bits (A1, A0) of register A to port P3.
− Sets (1) to port D.
− Clears (0) to a bit of port D specified by register Y.
− Sets (1) to a bit of port D specified by register Y.
− Skips the next instruction when a bit of port D specified by register Y is “0”. Executes the next instruction
when a bit of port D specified by register Y is “1”.
− Clears (0) to port C.
− Sets (1) to port C.
− Transfers the contents of register A to port output structure control register FR0.
− Transfers the contents of register A to port output structure control register FR1.
− Transfers the contents of pull-up control register PU0 to register A.
− Transfers the contents of register A to pull-up control register PU0.
− Transfers the contents of pull-up control register PU1 to register A.
− Transfers the contents of register A to pull-up control register PU1.
− Transfers the contents of pull-up control register PU2 to register A.
− Transfers the contents of register A to pull-up control register PU2.
− Transfers the input of port K to the least significant bit (A0) of register A. “0” is stored to the high-order 3 bits
(A3−A1) of register A.
Rev.1.02 May 25, 2007 Page 114 of 124
REJ03B0179-0102