1 KXD910SB Overview

1.1 General Description

      KXD910SB is a high-performance Controller for capacitive touch keys. Its engine is an 8-bit 80C52 compatible Processor.

      KXD910SB has three timer/counters, maximum 24 channels of touch sensors, maximum 29 programmable I/O pins, 1 Sleep timer, 1 Watchdog timer, POR (Power-On Reset), UART, I2C, and LVD (Low Voltage Detector) as peripherals. In addition, it contains an internal ring oscillator, which can generate the 48 MHz system clock signal instead of a external oscillator.

      KXD910SB has its own architecture for fast sensing. With the hardware filter, it provides noise immunity and excellent sensitivity. The firmware algorithm supports smart sensitivity and compensates for changes in the sensitivity due to environmental factors such as temperature and humidity.

      To manage power effectively,KXD910SB  enables low power consumption by using scan interval and clock control methods after last touch.

      KXD910SB operates over the extended -20℃ to +85℃ temperature range, and is available in the 5mm x 5mm, 32-pin MLF/QFN or 24-pin MLF package.

1.2 Features

◆Capacitive touch key controller
      ◇Supports up to 24 single-type touch keys
      ◇Supports scroll bar-type touch keys
      ◇Supports wheel-type touch keys
◆Response Time
      ◇Programmable sensing rate for power saving.
◆CPU
      ◇8-bit Turbo 80C52 Architecture
      ◇4 Cycles / 1 Machine CycleKXD910SB

      ◇Instruction Level Compatible with Intel 80C52
◆Memory
      ◇32kB Flash
      ◇2KB Internal Aux. RAM
      ◇256B Internal RAM
◆Power Supply
      ◇Operating Voltage : +1.8V to +3.6V
◆Operating Frequency: Max. 48MHz
◆29 Programmable I/O Pins
◆Communication interfaces
      ◇1-channel I2C Communication (Master/Slave)
      ◇1-channel UART Communication
◆Internal Ring OSC with Calibration function
◆Supporting ISP/IAP/MDS
◆8 Internal Interrupt Sources and 4 External Interrupt Sources
◆4 Reset Sources
◆Sleep (Power Down) Wake-up Sources
      ◇Reset Sources + 4 External Interrupt (Both Levels or Edge)
      ◇Sleep Timer wakeup event
      ◇WDT interrupt

◆4 Operating modes : Active, Idle, Sleep, Deep Seep(Halt)
      ◇Active : The CPU and all peripherals are ON.
      ◇Idle : The CPU is OFF and all or the part of peripherals can be ON. It can be woken up to Active mode by any interrupt sources.
      ◇Sleep : The CPU and all peripherals except sleep timer are OFF. The Sleep timer only is ON. It can be woken up to Active mode by sleep timer or external interrupts.
      ◇Deep Sleep(Halt) : The CPU and all peripherals including sleep timer are OFF. It can be woken up to Active mode by external interrupts only.
◆E.S.D. Protection up to
      ◇4,000V
◆Latch-up Protection Up to 200mA
◆Package
      ◇32-MLF (5mm X 5mm, 0.85T), 32-QFN (5mm X 5mm, 0.85T)
      ◇24-MLF (4mm X 4mm, 0.85T)

1.3 Applications

◆Home appliance: TV, Monitor, Home Theater, Remote Controller, etc.
◆Mobile Phones
◆Portable MP3, MP4
◆Digital Cameras
◆Navigation Systems & Automotive Applications
◆Battery power applications