Featured Products Easy-to-use, space-saving form factor based on custom designs Capacitive Touchscreen Controller BU21101MWX The BU21101MWX is an ultra-compact capacitive touchscreen controller that requires very few external components. It is designed to support a variety of sensors while providing high performance and significant space savings. Energy Easy efficient to use Waterproof Mist Drop Wet finger Compatible with stylus pens & gloves SNR Noise Filter AC, LCD, and other noise Sensor structure that supports a wide range of materials Compatible with most structures Bridge Material Glass Pet Cover Sensor Gap VCOM LCD Module Diamond Stripe Material Cover Max. 2.0 mm Max. 1.5 mm AC Air Gap 0.2 to 0.6mm depend on panel DC Any (Air/OCA/None) 0.0mm Sensor size Mutual capacitance Conditions Typ. 5.0mm 0.5 to 10pF (Typ. 2pF) Panel Loading (Cp * R) Cp : Parastic capacitance R : Registance Cp = 10pF R = 100Koh Sensor Material Glass OK Film OK Glass & Film OK Pattern Diamond OK Structure Bridge DITO OK OK SITO OK One Glass OK Cover ITO Glass DITO Cover Glass One Glass Cover Film Cover Film Film Flexible sensor design makes replacement easy Flash Memory Spacesaving Adjust the settings to match the sensor. MASK ROM ROM/RAM built in (The RAM features a patch system that operates when problems arise) Cross Fewer external Thin, compact parts package Only 2 capacitors required SITO OK Stripe Energy-saving solution Mask ROM OK/NG 40pin 5.0×5.0×0.6mm Skip BU21101 Reordering Cross -TX to TX: OK -RX to RX: OK Skip R3 R2 X0 Capacitive Touchscreen X8 X9 R1 Block Diagram RESETB Y0 SDA Y1 HOST SCL INTB Y2 BU21101MWX 3.0V VDD LDO Y11 VSS0/1 C1 X19 X18 X17 X16 X10 C2 Specifications Touchscreen Controllers Capacitive Type Capacitive Touchscreen Controller Part No. NEW %& Panel Size (Inches) Supply Voltage (V) MCU Touch Detection Host I/F No. of Channels Sensing Method 2.7 to 3.6 32bit 5-point I2C 32 Mutual 5 UQFN040X5050M Package Number of Sensors (Total 32ch) Package 2C interface !" – TX (X) : 18-22ch – RX (Y): 10-14ch – Common (TX/RX): 4 ch UQFN40: 5.0x5.0x0.6mm Resistive Type Standby Current Operating Current Host I/F Operating Temp. (°C) 60 4.0mA I2C/SPI -20 to +85 VCSP50L2 IC -20 to +85 VCSP50L2 I2C -20 to +85 VQFN020V4040 Supply Voltage (V) MCU 2.7 to 3.6 32bit 4096×4096 1-/2-point 1.65 to 3.6 - 4096×4096 1-/2-point 100 0.8mA 1.65 to 3.6 - 4096×4096 1-/2-point 100 0.8mA Part No. Resolution Touch Detection 2 2 2.65×2.70, t=0.55 2.0×2.0, t=0.55 !" 2.7 to 3.6 8bit 1024×1024 1-/2-point 60 4.0mA I C/SPI -40 to +85 SSOP-B28 # 2.7 to 3.6 8bit 1024×1024 1-/2-point 60 4.0mA I2C/SPI -20 to +85 VCSP50L2 # 2.7 to 3.6 8bit $ 1.65 to 3.6 - 2 2.6×2.6, t=0.55 1024×1024 1-/2-point 60 4.0mA I C/SPI -20 to +85 VQFN028V5050 4096×4096 0.8 I2C -30 to +85 VCSP50L2 1-point 1.5×2.0, t=0.55 Under Development The content specified in this document is correct as of August 1st, 2013. Catalog No.56O6713E 08.2013 ROHM © CN