AK4160EN
AK4160EN Datasheet
[AK4160]
| Part | Datasheet |
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AK4160EN |
AK4160EN (pdf) |
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| [AK4160] AK4160 16-channel Capacitive Touch Sensor IC GENERAL DESCRIPTION The AK4160 is a low operating voltage and low power consumption 16-channel capacitive touch sensor. Maximum 8 channels out of the 16-channel can be configured to LED drive or GPIO. The AK4160 has a channel independent automatic correct function of environmental drifts for each sense input. It reduces false detection by continuous calibration of the internal reference value in the situation when the input capacitance of the touch switch is changed by the external factors such as hydrothermal conditions. The automatic initial setting function sets the charge current and charge time according to the size and the shape of a touch switch. The AK4160 can be configured via serial interfaces, it is suitable for mobile phones, PCs and home electric applications. FEATURE - Up to 16 capacitive sensor inputs - Up to 8 general purpose inputs/outputs with PWM control for LED - Automatic initial setting function for the charge current and time - Independent automatic environmental drifts correct function for each sense terminal - Independent threshold configuration for each sense terminal - Selectable multi touch feature - Integrated Median Averaging Filter - Selectable 3 interrupt outputs that be able to use as GPIOs - Reset Input pin - I2C Serial Interface - 10 bit SAR A/D Converter with S/H circuit - Integrated Regulator - Low Power Consumption Typ. 3.4uA Sampling rate=512ms, 16ch Sensor input Active - Power Down Current Typ. 1.0uA - Low Power Operation VDD = 1.71V ~ 3.6V - Operating Temperature Ta = -40 ~ 85 °C - Package 28pin QFN 4.0mm x 4.0mm, pitch 0.4mm I2C-bus is a trademark of NXP B.V. MS1313-E-01 -1- 2011/11 [AK4160] VDD VSS VREG RSTN SCL SDA AD0 AD1 IRQ0N / GPIOA IRQ1N / GPIOB IRQ2N / GPIOC Power Control Serial Interface Clock IRQ Output Control & Register RREF Current Sources Auto Calibration LED Driver PWM Logic GPIO Logic Data Filter SAR ADC Switch Matrix CS0 CS1 CS2 CS3 CS4 CS5 CS6 CS7 CS8 / GPIO7 CS9 / GPIO6 CS10 / GPIO5 CS11 / GPIO4 CS12 / GPIO3 CS13 / GPIO2 CS14 / GPIO1 CS15 / GPIO0 Figure Block Diagram • Ordering Guide AK4160EN AKD4160 −40 ~ +85°C 28pin QFN 4mm x 4mm, 0.4mm pitch AK4160EN Evaluation Board MS1313-E-01 -2- 2011/11 • Pin Layout [AK4160] CS9 / GPIO6 CS8 / GPIO7 CS7 CS6 CS5 CS4 CS3 21 20 19 18 17 16 15 CS10 / GPIO5 22 14 CS2 CS11 / GPIO4 23 CS12 / GPIO3 24 AK4160EN 13 CS1 12 CS0 CS13 / GPIO2 25 CS14 / GPIO1 26 Top View 11 RREF 10 VSS CS15 / GPIO0 27 9 VREG VDD 28 8 RSTN 1234567 IRQ0N / GPIOA IRQ1N / GPIOB IRQ2N / GPIOC AD0 SCL AD1 SDA MS1313-E-01 -3- 2011/11 [AK4160] PIN/FUNCTION Pin No. Pin Name Type Note 1 Note 2 Function Reset State RSTN pin = “L” IRQ0N / GPIOA D I/O Interrupt Bit0 / GPIO PinA Hi-z Input IRQ1N / GPIOB D I/O Interrupt Bit1 / GPIO PinB Hi-z Input IRQ2N / GPIOC D I/O Interrupt Bit2 / GPIO PinC |
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