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PDF AUR3852 Data sheet ( Hoja de datos )
| Número de pieza | AUR3852 | |
| Descripción | Enhanced Multi-touch Capacitive Touch Screen Controller | |
| Fabricantes | BCD | |
| Logotipo |  |
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Data Sheet
Enhanced Multi-touch Capacitive Touch Screen Controller AUR3852
General Description
The AUR3852 is a low-cost high-resolution single
chip solution for APA capacitive touch screen. It is
an 8-bit single cycle 8051 microcontroller with ICP
Interface. The chip includes a 12-bit successive
approximation analog-to-digital converter with an I2C
interface and multiplexer-switcher circuits for
flexible measurement of analog signal from APA
panel. An accurate switched-capacitor integrator is
built-in and it can auto calibrate the pixel parameters
for a wide range of capacitance on the touch screen
(0.1pF to 4pF). On-chip capacitor can replace
external component. This touch screen controller
(TSC) with CMOS integration circuit provides an
ideal choice for APA touch panel. The AUR3852 is
specified over the temperature range of -40°C to
85°C.
The AUR3852 is available in QFN-6×6-48 and
QFN-7×7-56 packages.
Features
• 1Mutual Capacitive Touch Sensing
• Single Power Supply: 2.8V to 3.6V Operation
Voltage
• 1Supports Low Voltage to 1.8V by Built-in 1.8V
to 3.3V Boost Converter
• QFN-6×6-48 Package: Up to 20 Drive Lines and
14 Sense Lines
• 1QFN-7×7-56 Package: Up to 27 Drive Lines and
15 Sense Lines
• 1Dedicated Internal Two-wire Serial Control Bus
I2C and UART between AUR3852 and Host
• 1Single-end Integrator with Programmable Gain
Control and Offset Control
• 1Multiplexed Analog Digitization with 12-bit
Resolution SAR ADC
Features (Continued)
• Single Cycle 8051 CPU Core, Maximum Opera-
ting Clock up to 24MHz from IOSC
2MHz to 24MHz Internal Oscillator (IOSC)
32K-byte Flash ROM
256-byte Internal SRAM and 5888-byte
XSRAM
Two 16-bit Timers T0/T1 and One 16-bit ECT
Timer T2
One I2C Slave Controller and One I2C Master
Controller Shared with the Same Port
With Asynchronous I2C Slave Address
Detection Logic Design
Up to 30 General Purpose GPIO Pins (QFN-56);
25 General Purpose GPIO Pins (QFN-48)
Up to 8 External Interrupt Pins
Up to 2 UART Ports (QFN-56); 1 UART Port
(QFN-48)
• ISP/IAP via I²C/UART Port
(With External Clock I/O Pin Definition for
UART IAP. Pin Shared with P1.7)
• Operation Temperature Range: -40°C to 85°C
• Package Type: QFN-6×6-48 and QFN-7×7-56
• RoHS Compliance
• Operating Mode:
Mode
Power-down
Low speed
Standard
Description
No scan with power-down mode
Lower scan rate when finger is not
on panel, IOSC=32kHz
Higher scan rate when fingers are
on panel, IOSC can up to 2MHz
to 24MHz
Applications
• Mobile Phones
• Personal Digital Assistants
• Smart Hand-held or Gaming Devices
QFN-6×6-48
QFN-7×7-56
Feb. 2013 Rev. 1. 0
Figure 1. Package Types of AUR3852
BCD Semiconductor Manufacturing Limited
1
1 page  
Data Sheet
Enhanced Multi-touch Capacitive Touch Screen Controller AUR3852
Pin Description (Continued)
Pin Number
QFN-6×6- QFN-7×7-
48 56
Pin
Name
8 8 P2.7
9 9 P2.6
10 10 P2.5
11 11 P2.4
12 12 P2.3
13 15 P3.6
14 16 P2.2
Pin
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Pin Function
Port 2.7 GPIO
8051 P2.7 GPIO
DL7
Left driving line 7
Port 2.6 GPIO
8051 P2.6 GPIO
DL8
Left driving line 8
Port 2.5 GPIO
8051 P2.5 GPIO
T2 Timer 2 Input
This pin can also be configured as Timer 2 input
DL9
Left driving line 9
Port 2.4 GPIO
8051 P2.4 GPIO
T2EX Timer 2 Trigger
This pin can also be configured as T2EX signal for Timer
2. T2EX is the Timer 2 trigger input
DL10
Left driving line 10
Port 2.3 GPIO
8051 P2.3 GPIO
DL11
Left driving line 11
Port 3.6 GPIO
8051 P3.6 GPIO
RXD1
This pin can also be configured as RXD of UART 1
Port 2.2 GPIO
8051 P2.2 GPIO.
TXD1
This pin can also be configured as TXD of UART 1
8051 P2.2 GPIO. To allow proper operation as GPIO P2.2
function, crystal oscillator must be disabled by setting
XOSCCFG register to 0x00
Feb. 2013 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
5
5 Page 
Data Sheet
Enhanced Multi-touch Capacitive Touch Screen Controller AUR3852
Ordering Information
AUR3852
Circuit Type
QT: QFN-6×6-48
QU: QFN-7×7-56
G: Green
Package
QFN-6x6-48
QFN-7x7-56
Temperature Range
-40 to 85°C
Part Number Marking ID
AUR3852GQT
AUR3852GQU
A3852GQT
A3852GQU
Packing Type
Tape & Reel
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G" in the part number, are RoHS compliant and
green.
AUR3852 Support 4” to 7” Touch Panel, Listed Below:
PN
AUR3852GQT
AUR3852GQU
TX/RX
20/14
27/15
Multi-touch
10 point 100Hz
10 point 100Hz
Package
QFN-6x6-48
QFN-7x7-56
Panel size
4” to 5”
5” to 7”
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage
Analog Input Voltage (Other pins)
Logic Input Voltage
Power Dissipation
Maximum Junction Temperature
Operating Temperature
Storage Temperature
Symbol
VDD
PD
TJ
TOP
TSTG
Value
2.8 to 3.6
-0.3 to VDD+0.3
-0.3 to VDD+0.3
250
100
-40 to 85
-65 to 150
Unit
V
V
V
mW
°C
°C
°C
Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional operation of the device at these or any other conditions
beyond those indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute
Maximum Ratings” for extended periods may affect device reliability.
Feb. 2013 Rev. 1. 0
BCD Semiconductor Manufacturing Limited
11
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| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet AUR3852.PDF ] | |
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