UPD77210 datasheet(39/74 Pages) NEC

39 / 74 page

Data Sheet U15203EJ3V0DS

µµµµPD77210, 77213

9. INSTRUCTION

9.1 Outline of Instruction

One instruction consists of 32 bits. All the instructions, with some exceptions such as branch instructions, are

executed with one system clock. The instruction cycle of the

µPD77210 is up to 6.25 ns. The instruction cycle of the

µPD77213 is up to 8.33 ns. The following nine types of instructions are available.

(1) Trinomial instructions

These instructions specify an operation by the MAC. As the operands, three general-purpose registers can

be specified.

(2) Binomial instructions

These instructions specify an operation by the MAC, ALU, or BSFT. As the operands, two general-purpose

registers can be specified. Some of these instructions allow one immediate value to be specified instead of a

general-purpose register.

(3) Monomial instructions

These instructions specify an operation by the ALU. As the operand, a general-purpose register can be

specified.

(4) Load/store instructions

These instructions specify 16-bit data transfer between memory and a general-purpose register.

As the

operand, any general-purpose register can be specified.

(5) Register-to-register transfer instructions

These instructions specify transfer between a general-purpose register and another register.

(6) Immediate value setting instructions

These instructions set an immediate value in the general-purpose registers and each register of the address

operation unit.

(7) Branch instructions

These instructions specify branching of the program.

(8) Hardware loop instructions

These instructions specify the repetitive execution of an instruction.

(9) Control instructions

These instructions specify program control.

UPD77210 Datasheet(PDF) 39 Page - NEC