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PDF CSC2046 Data sheet ( Hoja de datos )
| Número de pieza | CSC2046 | |
| Descripción | Touch Screen Controller | |
| Fabricantes | HWCAT | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CSC2046 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
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Email:[email protected] Msn:[email protected] Attn:jeness tel:13682308162
HWCAT
CSC2046
FEATURES
● SAME PINOUT AS ADS7846
● 2.2V TO 5.25V OPERATION
● 1.5V TO 5.25V DIGITAL I/O
● INTERNAL 2.5V REFERENCE
● DIRECT BATTERY MEASUREMENT (0V to 6V)
● ON-CHIP TEMPERATURE MEASUREMENT
● TOUCH-PRESSURE MEASUREMENT
www.DataShee●t4U.QcoSmPITM AND SPITM 3-WIRE INTERFACE
● AUTO POWER-DOWN
● AVAILABLE IN TSSOP-16, QFN-16, AND VFBGA-48 PACKAGES
APPLICATIONS
● PERSONAL DIGITAL ASSISTANTS
● PORTABLE INSTRUMENTS
● POINT-OF-SALE TERMINALS
● PAGERS
● TOUCH SCREEN MONITORS
● CELLULAR PHONES
DESCRIPTION
The CSC2046 is a next-generation version to the ADS7846 4-wire touch screen controller which supports
a low-voltage I/O interface from 1.5V to 5.25V. The CSC2046 is 100% pin-compatible with the existing
ADS7846, and will drop into the same socket. This allows for easy upgrade of current applications to the
new version. The CSC2046 also has an on-chip 2.5V reference that can be used for the auxiliary input,
battery monitor, and temperature measurement modes. The reference can also be powered down when not
used to conserve power. The internal reference operates down to 2.7V supply voltage, while monitoring
the battery voltage from 0V to 6V.
The low-power consumption of < 0.75mW typ at 2.7V (reference off), high-speed (up to 125kHz sample
rate), and on-chip drivers make the CSC2046 an ideal choice for battery-operated systems such as personal
digital assistants (PDAs) with resistive touch screens, pagers, cellular phones, and other portable
equipment. The CSC2046 is available in TSSOP-16, QFN-16, and VFBGA-48 packages and is specified
over the –40°C to +85°C temperature range.
SHENZ HEN HAIWEI SEMICONDUCTOR CORP 1
1 page  
HWCAT
PIN CONFIGURATION
www.DataSheet4U.com
CSC2046
QFN
SHENZ HEN HAIWEI SEMICONDUCTOR CORP 5
5 Page 
HWCAT
www.DataSheet4U.com
CSC2046
ANALOG INPUT
Figure 2 shows a block diagram of the input multiplexer on the CSC2046, the differential input of the
ADC, and the differential reference of the converter. Table I and Table II show the relationship between
the A2, A1, A0, and SER/
control bits and the configuration of the CSC2046. The control bits are
provided serially via the DIN pin—see the Digital Interface section of this data sheet for more details.
When the converter enters the hold mode, the voltage difference between the +IN and –IN inputs (as
shown in Figure 2) is captured on the internal capacitor array. The input current into the analog inputs
depends on the conversion rate of the device. During the sample period, the source must charge the internal
sampling capacitor (typically 25pF). After the capacitor has been fully charged, there is no further input
current. The rate of charge transfer from the analog source to the converter is a function of conversion rate.
SHENZ HEN HAIWEI SEMICONDUCTOR CORP 11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CSC2046.PDF ] | |
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