參數(shù)資料
型號(hào)： TSC2008TRGVRQ1
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC16
封裝： 4 X 4 MM, PLASTIC, VQFN-16
文件頁(yè)數(shù)： 4/35頁(yè)
文件大小： 418K
代理商： TSC2008TRGVRQ1
X+
Y+
X-
Y-
AuxilaryInput
GND
TSC2008
GND
1 Fto
10 F
m
0.1 F
m
Touch
Screen
GPIO
SDI
SCLK
Host
Processor
PENIRQ
SDO
SCLK
VDD/REF
A
UX
GND
1.8VDC
GPIO
SDO
CS
SDI
SBAS552
– JUNE 2011
OVERVIEW
The TSC2008-Q1 is an analog interface circuit for a human interface touch screen device. All peripheral
functions are controlled through the command byte and onboard state machines. While maintaining similarity in
hardware, command, and software to its predecessor, the TSC2046 (or TSC2046E), the TSC2008-Q1 includes
significant improvements such as:
Much stronger and more comprehensive electrostatic discharge (ESD) protection
Uses only 1/13 power for equivalent performance
1/7 bus traffic
3/16 size
Direct 1.8V interface
Prudent reset scheme
Saves 1/7 power if 8-bit SDO adjusted output mode used
The TSC2008-Q1 consists of the following blocks (see Figure 1):
Touch Screen Sensor Drivers
Auxiliary Input (AUX)
Temperature Sensor
Acquisition Activity Preprocessing
Internal Conversion Clock
SPI Interface
Communication with the TSC2008-Q1 is done via an SPI serial interface. The TSC2008-Q1 is an SPI slave
device; therefore, data are shifted into or out of the TSC2008-Q1 under the control of the host microprocessor,
which also provides the serial data clock.
Control of the TSC2008-Q1 and its functions is accomplished by writing to the command register of an internal
state machine. A simple command protocol (compatible with SPI) is used to address this register.
A typical application of the TSC2008-Q1 is shown in Figure 21.
Figure 21. Typical Circuit Configuration
12
Copyright
2011, Texas Instruments Incorporated
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