EM78P153EN Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM78P153EN

8-bit microprocessor designed and developed with low-power and high-speed CMOS technology

ELAN Microelectronics 

EM78P153E

OTP ROM

on reset. Fig.18 and Fig. 19 show how to build a residue-voltage protection circuit.

Vdd

EM78P153E

Q1

/RESET

100K

Vdd

33K

10K

1N4684

Fig. 18 Circuit 1 for the Residue Voltage Protection

Vdd

EM78P153E

Q1

/RESET

R3

Vdd

R1

R2

Fig. 19 Circuit 2 for the Residue Voltage Protection

4.13 Instruction Set

Each instruction in the instruction set is a 13-bit word divided into an OP code and one or more

operands. Normally, all instructions are executed within one single instruction cycle (one instruction

consists of 2 oscillator periods), unless the program counter is changed by instruction "MOV R2,A",

"ADD R2,A", or by instructions of arithmetic or logic operation on R2 (e.g. "SUB R2,A", "BS(C) R2,6",

"CLR R2", ⋅⋅⋅⋅). In this case, the execution takes two instruction cycles.

If for some reasons, the specification of the instruction cycle is not suitable for certain applications, try

modifying the instruction as follows:

(A) Modify one instruction cycle to consist of 4 oscillator periods.

This specification is subject to change without prior notice.

31

2002/03/01

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