Standard 16-Touch Keys BS8116A-3 + HT48R003 Characteristics Touch Keys : BS8116A-3 20-pin SOP + HT48R003 Operating voltage : 2.2V ~ 5.5V Low standby current Auto-calibration Reliable touch key detections High power supply rejection Standby and normal operating power modes Maximum key on duration time detection Power supply voltage drop Rejection function 16 touch key inputs 2 I C interface 3 Option ◆ ◆ ◆ LSC ‒ lower standby current Key12 / IRQ function select Key wakeup function Sensitivity adjustment using an external capacitor Minimal number of external components 16-pin NSOP Applications Consumer Products, Home Appliances, Industrial Control, Health Care Products, etc. Application Circuit LED10 LED11 LED12 OUT OUT OUT OUT OUT LED13 LED14 LED15 OUT LED9 OUT LED8 OUT LED7 OUT4 LED6 OUT1 OUT4 OUT3 OUT2 OUT1 LED5 5 4 3 2 1 OUT8 LED4 OUT3 LED3 OUT2 LED2 OUT7 OUT6 OUT5 LED1 JP1 CN1 LED16 5 4 3 2 1 U2 OUT8 OUT7 OUT6 OUT5 OUT4 OUT3 OUT2 OUT1 R4 R3 R2 R1 220 220 220 220 1 2 3 4 5 6 7 8 PA4 PC5 PC4 PC3 PC2 PC1 PC0 PA3 PA5 PA6 PA7 VDD VSS PA0 PA1 PA2 16 15 14 13 12 11 10 9 LSC OMS VDD GND IRQ SCL SDA OptionB OptionA VDD C1 HT48R003 16NSOP 0 0 104 BAT1 CR2032 KEY3 KEY2 KEY4 KEY1 KEY5 U1 KEY6 KEY7 KEY8 1 2 3 4 5 6 7 8 9 10 KEY3 KEY4 KEY5 KEY6 KEY7 KEY8 KEY9 KEY10 KEY11 KEY12 KEY2 KEY1 SDA SCL VDD VSS KEY16/IRQ KEY15 KEY14 KEY13 20 19 18 17 16 15 14 13 12 11 SDA SCL VDD GND IRQ R6 1K VDD R5 1K C2 104 CR2032 BAT1 BS8116A-3 20SOP KEY9 KEY10 KEY11 KEY12 KEY116 KEY15 KEY14 KEY13 GND VDD SDA SCL IRQ GND VDD SDA SCL IRQ