BU21029MUV Datasheet, PDF (1/29 Pages) Rohm – 4-wire Resistive Touch Screen Controller

Datasheet
4-wire Resistive
Touch Screen Controller
BU21029MUV
●General Description
Unlike most resistive touch screen controllers, the
BU21029MUV 4-wire resistive touch-screen controller
can generate data that enables dual touch detection.
The Host processor can use this data to detect single
and dual point coordinates.
●Features
■ Single and dual touch detection for standard 4-wire
resistive touch screens
■ I2C-like interface for interfacing with the host
processor
■ 12-bit resolution
■ Single 1.65V to 3.60V supply
■ Power on reset
■ Auto power down control
■ Built-in clock oscillator circuit
●Key Specifications
■ Power supply voltage
■ Temperature range
■ Standby current
■ Sleep current
■ Operating current
■ Coordinate resolution
1.65[V]～3.60[V]
-20[℃]～85[℃]
1.0[uA] (Max.)
100[uA] (Typ.)
0.8[mA] (Typ.)
12bit
●Package
VQFN020V4040
4.00 mm x 4.00 mm x 1.00 mm
●Applications
■ Equipment with built-in user interface for 4-wire
resistive touch screen
■ Portable information equipment like smart phones,
tablets, and PDAs
■ Audio-visual equipment like digital still cameras,
digital video cameras, and portable TVs
■ PCs or peripheral equipment like laptops, touch
screen monitors, and printers
●Typical Application Circuit
〇Product structure : Silicon monolithic integrated circuit 〇This product has no designed protection against radioactive rays
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