Specifications

II-46 EPSON S1C6S2N7 TECHNICAL SOFTWARE
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 OFF
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 battery 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 accor-
dance with the actual application.