UPD750064CU datasheet(52/82 Pages) NEC

52 / 82 page

µPD750064, 750066, 750068, 750064(A), 750066(A), 750068(A)

Data Sheet U10165EJ2V0DS00

Instruction

Number

Addressing

Mnemonic

Operand

of Machine

Operation

Skip Condition

Group

of Bytes

Cycles

Area

Subroutine

RETNote

µPD750064

stack control

PC11–0

← (SP) (SP+3) (SP+2)

MBE, RBE, 0, 0

← (SP+1), SP ← SP+4

µPD750066, 750068

PC11–0

← (SP) (SP+3) (SP+2)

MBE, RBE, 0, PC12

← (SP+1), SP ← SP+4

µPD750064

×, ×, MBE, RBE ← (SP+4)

0, 0, 0, 0,

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2), SP ← SP+6

µPD750066, 750068

×, ×, MBE, RBE ← (SP+4)

MBE, 0, 0, PC12

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2), SP ← SP+6

RETSNote

3+S

µPD750064

Unconditional

MBE, RBE, 0, 0

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2)

← SP+4

then skip unconditionally

µPD750066, 750068

MBE, RBE, 0, PC12

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2)

← SP+4

then skip unconditionally

µPD750064

0, 0, 0, 0

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2)

×, ×, MBE, RBE ← (SP+4)

← SP+6

then skip unconditionally

µPD750066, 750068

0, 0, 0, PC12

← (SP+1)

PC11–0

← (SP) (SP+3) (SP+2)

×, ×, MBE, RBE ← (SP+4)

← SP+4

then skip unconditionally

Note

The operations indicated with thick lines can be performed only in the Mk II mode. The other operations

can be performed only in the Mk I mode.

UPD750064CU Datasheet(PDF) 52 Page - NEC

UPD750064CU Datasheet(HTML) 52 Page - NEC

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