LSI

LS3201

2

Functional Description

1. RC Oscillator /Crystal

The LS3201 can use either a crystal oscillator or RC oscillator to provide the internal timing by

mask option.

2. Program ROM

The LSI3201 has internal 2Kx12 bit ROM providing simple operation. It has four internal stack.

3. Interrupt Control

The LSI3201 has 5 different sources of interrupt, namely, POWERUP, F4HZ, F16HZA, F16HZS

and F1HZ. The starting address of the interrupt are as follow :

Interrupt

Address

POWERUP

0

F1HZ

1

F4HZ

2

F16HZA

3

F16HZS

4

The system generates 16 interrupts for F16HZS in one second but only 11 interrupts for F16HZA.

The other 5 interrupts goes to F4HZ (4) and F1HZ (1) interrupts.