Specifications

S1C62N82 TECHNICAL SOFTWARE EPSON II-51
CHAPTER 3: PERIPHERAL CIRCUITS (SVD Circuit and Heavy Load Protection Function)
Examples of heavy
load protection
function control
program
• Operation through the HLMOD register
This is a sample program when lamp is driven with the
R00 terminal during performance of heavy load protec-
tion.
Label Mnemonic/Operand Comment
LD X,0FAH ;Sets the address of HLMOD
OR MX,1000B ;Sets to the heavy protection mode
LD Y,0F3H ;Sets the address of R0n port
OR MY,0001B ;Turns lamp ON
:
:
LD Y,0F3H ;Sets the R0n port address
AND MY,1110B ;Turns the lamp on
CALL WT1S ;1 second waiting time (software timer)
AND MX,0111B ;Cancels the heavy load protection mode
In the above program, the heavy load protection mode is
canceled after 1 sec waiting time provided as the time for
the supply voltage to stabilize after the lamp is turned off;
however, since this time varies according to the nature of
the battery, time setting must be done in accordance with
the actual application.