BU21072MUV_16 Datasheet, PDF (26/40 Pages) Rohm – Capacitive Switch Controller ICs

BU21072MUV / BU21078MUV / BU21078FV
Simple Switch
Every sensor is used for simple switch. Each simple switch has the registers of detected Touch/Release/Hold operations.
Simple switches support to multi-detect Touch/Release/Hold. Unused simple switches are maskable.
Case1 Long push setting CONTSEL = 1
SIN0（sensor ON/OFF）
key ON recognition(SW0)
key long push recognition(SW0)
key OFF recognition(SW0)
INT pin
Send clear command for interrupt of SW0 ON
Setting of long push time
Send clear command for interrupt of SW0 long push
Setting of long push time
Case2 Long push setting CONTSEL = 0
SIN0（sensor ON/OFF）
key ON recognition(SW0)
key long push recognition(SW0)
key OFF recognition(SW0)
INT pin
Send clear command for interrupt of SW0 ON
Setting of long push time
Send clear command for interrupt of SW0 long push
Figure 23. Interrupt of simple switch (1)
Send clear command for interrupt of SW0
Send clear command for interrupt of SW0 OFF
SIN0（sensor ON/OFF）
key ON recognition(SW0)
key OFF recognition(SW0)
SIN1（sensor ON/OFF）
key ON recognition(SW1)
key OFF recognition(SW1)
INT pin
Send clear command for interrupt of SW0 ON
Send clear command for interrupt of SW0 OFF
Send clear command for interrupt of SW1 ON
Send clear command for interrupt of SW1 OFF
Figure 24. Interrupt of simple switch (2)
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