TSC2300 Datasheet, PDF (1/81 Pages) Texas Instruments – PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH AUDIO CODEC

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TSC2300
SLAS372 — NOVEMBER 2002
PROGRAMMABLE TOUCH SCREEN CONTROLLER
WITH AUDIO CODEC
FEATURES
• ^{SPI™ Serial Interface}
• ^{Touch screen Controller}
– 4-Wire Touch Screen Interface
– Internal Detection of Screen Touch and
Keypad Press
– Touch Pressure Measurement
– Ratiometric Conversion
– Programmable 8, 10 or 12 Bit Resolution
– Programmable Sampling Rates Up to 125
kHz
– Direct Battery Measurement (0 to 6 V)
– On-Chip Temperature Measurement
– 4-by-4 Keypad Interface With
Programmable De-bounce
– Integrated Touch Screen Processor
Reduces Host CPU Interrupts and
Overhead
– Internal Timing Control With Programmable
Delays
• Audio Codec
– 20-Bit Delta-Sigma ADC/DAC
– Dynamic Range: 98 dB
– Sampling Rate Up To 48 kHz
– I²S Serial Interface
• ^{Full Power Down Control}
• ^{On-Chip Crystal Oscillator}
• ^{6 GPIO Pins}
• ^{Single 2.7-V to 3.6-V Supply}
• ^{64-pin TQFP Package}
APPLICATIONS
• ^{Personal Digital Assistants}
• ^{Cellular Phones}
• ^{MP3 Players}
• ^{Internet Appliances}
• ^Smartphones
DESCRIPTION
The TSC2300 is a highly integrated PDA analog
interface circuit. It contains a complete 12-bit A/D
resistive touch screen converter including drivers, touch
pressure measurement capability, keypad controller and
8-bit D/A converter output for LCD contrast control. The
TSC2300 offers programmable resolution of 8, 10, and
12 bits and sampling rates up to 125 kHz to
accommodate different screen sizes. The TSC2300
interfaces to the host controller through a standard SPI
serial interface.
The TSC2300 features a high-performance 20-bit,
48-ksps audio codec with highly integrated analog
functionality. The audio portion of the TSC2300 contains
microphone input with built-in pre-amp and microphone
bias circuit, an auxiliary stereo analog input, a stereo
line-level output, a differential mono line-level output,
and a stereo headphone amplifier output. The digital
audio data is transferred through a standard I²S
interface.
The TSC2300 also offers two battery measurement
inputs capable of battery voltages up to 6 V, while
operating at a supply voltage of only 2.7 V. It also has an
on-chip temperature sensor capable of reading 0.3°C
resolution. The TSC2300 is available in a 64-lead TQFP.
US Patent No. 6246394
SPI is a trademark of Motorola.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright © 2002, Texas Instruments Incorporated