IS31SE5117 EVB User Manual
Lumissil Microsystems – www.lumissil.com
21
Rev. B, 10/25/2020
6.4
MULTI-KEY_SET
：
Multi-Key Setting
As shown in Figure 29 below,
Figure 29: MULTI-KEY_SET option
MULTI-KEY_ENABLE is enabled multi-key function. Checking is enable. When MULTI-KEY_ENABLE is not
checking, all keys are available.
MULTI-KEY_SELECTION can be set to ONE KEY, TWO KEYS or THREE KEYS by clicking the arrow in box. In
some applications, such as a password lock, the number of keys pressed need to limit at the same time. The
MULTI-KEY_SELECTION should be set to ONE KEY to prevent error on password lock.
6.5
INT_REPEAT_SET
：
Interrupt Repeat Setting
As shown in Figure 30 below,
Figure 30: INT_REPEAT_SET option
INT_MODE_SELECT is INT_MODE mode setting. System generates one interrupt only by pressing or releasing
keys when pick INT_MODE_0. System generates interrupt repeatly by pressing keys when pick INT_MODE_1
and releaseing key will trigger once interrupt.
INT_REPEAT_TIME is used to set interrupt auto-repeat time. Click arrow in bow to choose different time and unit
is milisecond.
MULTI_PRESS_TIME is used to set the time between first and second interrupt. Click arrow to choose different
time and unit is milisecond.
If there is a key keeping pressing, second interrupt will be generate untill MULTI_PRESS_TIME after first interrupt
and waiting for INT_REPEAT_TIME to trigger third interrupt and going on interrrupt.
