UPD64AMC datasheet(45/64 Pages) NEC

45 / 64 page

µPD64A, 65

Data Sheet U14380EJ2V0DS00

MOV T, @R0

<1> Instruction code

: 0 01111111 1

<2> Cycle count

: 1

<3> Function

: (T)

← ((P13), (R0))

Transfers the program memory contents to the timer register T (t9 to t0) specified with the control register

P13 and the register pair R10-R00.

The program memory, which consists of 10 bits, is placed in the following state after the transfer to the

@R0

→

Program memory

Timer

The high-order 2 bits of the program memory address are specified with the control register (P13).

Caution When setting a timer value in the program memory, ensure to use the DT directive.

9.10 Others

HALT #data4

<1> Instruction code

: 0 00101000 1

: 0 00000 d3 d2 d1 d0

<2> Cycle count

: 1

<3> Function

: Sandby mode

Places the CPU in standby mode.

The condition for having the standby mode (HALT/STOP mode) canceled is specified with the immediate

data.

STTS R0n

<1> Instruction code : 0 00110 R3 R2 R1R0

<2> Cycle count

: 1

<3> Function

: if statuses match

← 1

else

← 0 n = 0 to F

Compares the S0, S1, KI/O, KI, and TIMER statuses with the register R0n contents. If at least one of the

statuses coincides with the bits that have been set, the status flag F is set (to 1).

If none of them coincide, the status flag F is cleared (to 0).

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