電阻式觸控面板控制IC - BU21021GUL
BU21021GUL是內建12bit逐次型ADC,支援4線式電阻式觸控面板,最多可檢測2點的控制器。1點檢測時,可進行X/Y坐標的位置檢測與觸壓檢測,2點檢測時可進行各X/Y坐標的位置檢測。
可通過1點/2點坐標的移動進行手勢檢測,並單獨輸出檢測FLAG。內建CPU,在控制器內部進行濾波等的處理、檢測坐標的自動生成、手勢檢測。
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規格:
Vcc(Min.)[V]
2.7
Vcc(Max.)[V]
3.6
MCU
32bit
Resolution
4096 x 4096
Stand-by current[µA]
60.0
Host I/F
I2C / SPI
Operating Temperature (Min.)[°C]
-20
Operating Temperature (Max.)[°C]
85
功能:
・ Legacy 4-wire resistive touch screen is applicable・ 1 point / 2 points touch detection
・ On chip coordinate generation
・ Multiple gesture detections
・ 3V single power supply
・ Higher coordinate resolution with 12-bit SAR A/D converter
・ On chip clock generator
・ Selectable HOST I/F(IFSEL pin) 4-wire SPI / 2-wire serial bus