SiS9255 Projected Capacitive Touch-Screen Micro Processor Data sheet Rev. 1.2 August 18, 2015 This specification is subject to change without notice. Silicon Integrated Systems Corporation assumes no responsibility for any errors contained herein. Copyright by Silicon Integrated Systems Corp., all rights reserved. SiS9255 Projected Capacitive Touch-Screen Micro Processor Revision History Date Rev April 23, 2012 0.7 Initial Release May 07, 2012 0.8 Update Table1 July 24, 2012 0.9 Update General Description March 19, 2014 1.0- Modify typo on 4.6 USB interface July 15, 2014 1.1 Update IC Marking Information August 18, 2015 1.2 Add examples of Serial Shipping Number V1.2 - NDA Required Description i August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Contents 1 GENERAL DESCRIPTION .................................................................... 5 2 FEATURES ............................................................................................ 7 3 PIN ASSIGNMENT ................................................................................ 8 SIS9255 TOP SIDE VIEW .............................................................................. 8 SIS9255 BOTTOM SIDE VIEW ........................................................................ 9 4 PIN DESCRIPTION ..............................................................................10 ADC INTERFACE.........................................................................................10 PIN DESCRIPTION ........................................................................................ 11 I2C INTERFACE ............................................................................................12 GPIO INTERFACE ........................................................................................12 UART INTERFACE ........................................................................................12 USB INTERFACE ..........................................................................................12 POWER AND GROUND SIGNALS....................................................................13 5 ELECTRICAL CHARACTERISTICS.......................................................14 5.1 ABSOLUTE MAXIMUM RATINGS ................................................................14 5.2 DC CHARACTERISTICS ...........................................................................14 5.3 PACKING INFORMATION ...........................................................................15 6 MECHANICAL DIMENSION .................................................................16 7 IC MARKING INFORMATION ...............................................................18 8 SERIAL SHIPPING NUMBER ..............................................................19 9 COPYRIGHT NOTICE ...........................................................................20 V1.2 - NDA Required ii August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Figures FIGURE 1 SIS9255 SYSTEM DIAGRAM ...................................................... 6 FIGURE2 SERIAL SHIPPING NUMBER 1...................................................19 FIGURE 3 SERIAL SHIPPING NUMBER 2..................................................19 V1.2 - NDA Required iii August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Tables TABLE 1 ABSOLUTE MAXIMUM RATINGS ...............................................14 TABLE 2 DC CHARACTERISTICS OF I/O INTERFACE .............................14 TABLE 3 PACKING INFO. ...........................................................................15 TABLE 4 PACKAGE DIMENSION ...............................................................17 V1.2 - NDA Required iv August 18, 2015 5 SiS9255 Projected Capacitive Touch-Screen Micro Processor 1 General Description With accumulated PC-based chipset experiences and innovative technologies, SiS has delivered the best performance platforms and recognized as a top Stable Image Chipset Solution provider over the past decades. To further catch ride with the popularity of touch-screen devices launching, SiS9255 was developed to provide an optimal touch screen solution to OEM and ODM vendors for the new generation platform applications. SiS9255, a 32bit RISC touch-screen panel processor with the 12bits Analog-to-Digital Converter (12bits ADC) provides 52 pins TX, and 32 pins RX for supporting up to 10.1” projected capacitive touch sensor. SiS9255 provides both USB and I2C interface for communicating with host system. An embedded UART port is designed for further debugging and specific R&D applications. Implemented Watchdog Timer and Event Timer serve add-on-value functions for flexibility and creativity. Besides, Power on Demand technology design effectively reduces power-consumption to meet environmental protection requirements. More than that, GPIO feature ensures expandability on both H/W and S/W applications. Taking advantage of above features, SiS9255 enables designers to create new usage model of touch-screen products such as PAD, Tablet PC, Game Console… etc The embedded 12-bit ADC feature allows users to experience an operating environment of high resolution and high sampling rate which meets the Windows 8’s criterion. This extraordinary design is just right for those user-oriented vendors to deliver real-time and seamless playback. The high speed MCU with a filtering management algorithm implements to manage vivid gestures for enabling more direct and natural interaction in your applications. To effective filter out the unexpected coupling noise by hand/fingers operation on LCD/LED panel, SiS9255 has implemented a unique know-how based on the perfect architecture of its H/W, firmware and embedded filters. With its advanced technology algorithm, it can automatically adjust and compensate the sensing methodology to ensure the good touch quality, sensitivity and response-time under various changing humidity, temperature and other environmental factors. V1.2 - NDA Required 5 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Figure 1 SiS9255 System Diagram V1.2 - NDA Required 6 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 2 Features High Performance RISC Processor - Embedded high performance 32-bit processor. - Supports frequency scaling up to 96MHz system clock - 16K Byte instruction cache - 24K Byte Data SRAM. - Supports Interrupt controller - Support WatchDog timer - Support Event Timers - Embedded 64KB Flash ROM - Internal 12MHz clock Serial Peripheral Interface Master/Slave Controller - USB 2.0 Compliant - Support I2C Master/Slave interface - Support UART port - Up to 4 GPIO channel Analog System - Support up to 52 pins TX, 32 pins RX sensing pads. - Dual 12 bits resolution Analog-to-Digital Converter. - Support dynamic Power On Demand scheme for power saving at full loading, idle and sleep mode. 132 Pins BGA Green Package V1.2 - NDA Required 7 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 3 Pin Assignment SiS9255 Top Side View 1 A 2 3 4 5 6 7 8 9 10 11 12 TX49 TX47 TX43 TX39 TX36 TX32 TX28 TX25 VSS USBD+ GPIO2 A B TX51 TX50 TX48 TX45 TX41 TX37 TX34 TX30 TX26 REXT USBD- GPIO1 B C C4N C4P HVDD TX44 TX40 TX38 TX33 TX29 TX27 OVDD I2C_CLK I2C_DA C D C3N C3P CHVDD TX46 TX42 TX35 TX31 NC INT UART_TX UART_RX D E C2N C2P LVDD LVDD LVSS VSS VSS VSS RESET# GPIO3 GPIO4 E F C1N C1P TX2 LVSS VSS VSS VSS OVDD Test1 RX31 F G TX0 TX1 TX5 LVSS VSS VSS VSS RX28 RX29 RX30 G H TX3 TX4 TX7 LVSS VSS VSS VSS RX25 RX26 RX27 H J TX6 TX8 TX9 RX3 RX7 RX9 RX22 RX23 RX24 J K TX10 TX11 TX12 TX19 TX22 RX1 RX5 AVSS AVDD RX18 RX20 RX21 K L TX13 TX14 TX17 TX20 TX23 RX2 RX6 RX10 RX11 RX14 RX16 RX19 L M TX15 TX16 TX18 TX21 TX24 RX0 RX4 RX8 RX12 RX13 RX15 RX17 M 1 2 3 4 5 6 7 8 9 10 11 12 V1.2 - NDA Required 8 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor SiS9255 Bottom Side View 12 11 10 9 8 7 6 5 4 3 2 A GPIO2 USBD+ VSS TX25 TX28 TX32 TX36 TX39 TX43 TX47 TX49 B GPIO1 USBD- REXT TX26 TX30 TX34 TX37 TX41 TX45 TX48 TX50 TX51 B C I2C_DA I2C_CLK OVDD TX27 TX29 TX33 TX38 TX40 TX44 HVDD C4P C4N C D UART_RX UART_TX INT NC TX31 TX35 TX42 TX46 CHVDD C3P C3N D E GPIO4 GPIO3 RESET# VSS VSS VSS LVSS LVDD LVDD C2P C2N E F RX31 Test1 OVDD VSS VSS VSS LVSS TX2 C1P C1N F G RX30 RX29 RX28 VSS VSS VSS LVSS TX5 TX1 TX0 G H RX27 RX26 RX25 VSS VSS VSS LVSS TX7 TX4 TX3 H J RX24 RX23 RX22 RX9 RX7 RX3 TX9 TX8 TX6 J K RX21 RX20 RX18 AVDD AVSS RX5 RX1 TX22 TX19 TX12 TX11 TX10 K L RX19 RX16 RX14 RX11 RX10 RX6 RX2 TX23 TX20 TX17 TX14 TX13 L M RX17 RX15 RX13 RX12 RX8 RX4 RX0 TX24 TX21 TX18 TX16 TX15 M 12 11 10 9 8 7 6 5 4 3 2 1 V1.2 - NDA Required 9 1 A August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 4 Pin Description ADC interface Pin Name TX0 TX1 TX2 TX3 TX4 TX5 TX6 TX7 TX8 TX9 TX10 TX11 TX12 TX13 TX14 TX15 TX16 TX17 TX18 TX19 TX20 TX21 TX22 TX23 TX24 TX25 TX26 TX27 TX28 TX29 TX30 TX31 TX32 TX33 TX34 TX35 TX36 TX37 TX38 TX39 TX40 TX41 TX42 V1.2 - NDA Required Pin Attr Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Out Description Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin 10 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor TX43 TX44 TX45 TX46 TX47 TX48 TX49 TX50 TX51 RX0 RX1 RX2 RX3 RX4 RX5 RX6 RX7 RX8 RX9 RX10 RX11 RX12 RX13 RX14 RX15 RX16 RX17 RX18 RX19 RX20 RX21 RX22 RX23 RX24 RX25 RX26 RX27 RX28 RX29 RX30 RX31 Out Out Out Out Out Out Out Out Out In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In In Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal output pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Sense signal input pin Pin Description Pin Name Pin Attr INT Out RESET# In Test1 PWR V1.2 - NDA Required Description Interrupt pin sending request to HOST Low active power on reset signal External capacitor is required 11 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor C1P C1N C2P C2N C3P C3N C4P C4N HVDD CHVDD PWR PWR PWR PWR PWR PWR PWR PWR PWR PWR Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor Connect to external capacitor I2C Interface Pin Name Pin Attr Description I2C_CLK In/Out I2C serial clock input/output I2C_DA In/Out I2C serial data input/output GPIO Interface Pin Name GPIO1 GPIO2 GPIO3 GPIO4 Pin Attr In/Out In/Out In/Out In/Out Description General purpose input/output port General purpose input/output port General purpose input/output port General purpose input/output port Pin Attr In Out Description Incoming Data from a master Outgoing Data to a slave Pin Attr In/Out In/Out BIAS Description USB Data+ USB Data4.7K ohm Pull Low UART Interface Pin Name UART_RX UART_TX USB Interface Pin Name USBD+ USBDREXT V1.2 - NDA Required 12 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Power and Ground Signals Name Volt Power Plane Type Attr OVDD VSS 3.3V MAIN Digital 0V GROUND Digital LVDD 3.3V MAIN Analog LVSS 0V GROUND Analog AVDD 3.3V MAIN Analog AVSS 0V GROUND Analog V1.2 - NDA Required 13 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 5 Electrical Characteristics 5.1 Absolute Maximum Ratings Table 1 shows SIS9255 stress ratings only. Extended exposure to the maximum ratings might degrade device reliability. Although SIS9255 has protective circuitry to resist damage from electrostatic discharge (ESD), precautions should always be taken to avoid high voltage or electric field. Table 1 Absolute Maximum Ratings Symbol Parameter Min Max Unit Tstorage Storage Temperature -40 90 °C Ta Ambient Operating Temperature -20 85 °C 3.3V Supply Voltage -0.3 3.6 V Notes 1 OVDD LVDD AVDD NOTES: 1. The range of Ta means the normal operating under both active and idle mode. 5.2 DC Characteristics OVDD=3.3V+/-5%, LVDD=3.3V+/-5%, AVDD=3.3V+/-5%, AVSS=VSS=GND=0V, Table 2 DC Characteristics of I/O Interface Symbol Parameter Min Max Unit Notes VIH_TTL TTL Input High Voltage 2 OVDD+0.3 V 1 VIL_TTL TTL Input Low Voltage -0.3 0.8 V 1 V 1 V 1 mA 1 mA 1 VOH_TTL TTL Output High Voltage VOL_TTL TTL Output Low Voltage IOH_TTL TTL Output High Current IOL_TTL TTL Output Low Voltage 0.9* OVDD 0.45 -4 4 NOTES: 1. Parameter applies to following pins: GPIO[3:0], I2C_*, UART_*, INT and RESET#. V1.2 - NDA Required 14 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 5.3 Packing Information Table 3 Packing Info. Not take off the seal ( Al Bag ) Preserved conditions Temperature Humidity (℃) (%RH) 0 ~ 40 ℃ ＜ 90%RH V1.2 - NDA Required Take off the seal ( Al Bag ) General Preserved conditions Storage life Temperature 12 Months Humidity Storage life (℃) (%RH) 25 ± 5 ℃ ＜ 60%RH 15 168 Hours August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 6 Mechanical Dimension V1.2 - NDA Required 16 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor Table 4 Package Dimension V1.2 - NDA Required 17 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 7 IC Marking Information Topside Mark Logo 9255 Part No. Copyright SiS'11 XXXXXXX Green ZZZZYY WW Description W : Chip Version X : Lot No. (within 3 letters and 4 number) Y : Internal Control No. Z : Date Code V1.2 - NDA Required 18 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 8 Serial Shipping Number The serial shipping number will be shown on the shipping box as below. Normally, the serial shipping number shows in Figure 2. Figure2 Serial Shipping Number 1 If the same branding is using the same TP vendor but has many projects, the serial shipping number can be optionally used as below in Figure 3 Figure 3 Serial Shipping Number 2 V1.2 - NDA Required 19 August 18, 2015 SiS9255 Projected Capacitive Touch-Screen Micro Processor 9 Copyright Notice Copyright 2012 by Silicon Integrated Systems Corp. All rights reserved. This manual is copyrighted by Silicon Integrated Systems Corp. You may not reproduce, transmit, transcribe, store in a retrieval system, or translate into any language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual, or otherwise, any part of this publication without the expressly written permission from Silicon Integrated Systems Corp. Trademarks SiS is a registered trademark of Silicon Integrated Systems Corp. All brand or product names mentioned are trademarks or registered trademarks of their respective holders. Disclaimer Silicon Integrated Systems Corp. makes no representations or warranties regarding the Contents of this manual. We reserve the right to revise the manual or make changes in the specifications of the product described within it at any time without notice and without obligation to notify any person of such revision or change. The information contained in this manual is provided for the general use by our customers. Our customers should be aware that the personal computer field is the subject of many patents. Our customers should ensure that they take appropriate action so that their use of our products does not infringe upon any patents. It is the policy of Silicon Integrated Systems Corp. to respect the valid patent rights of third parties and not to infringe upon or assist others to infringe upon such rights. Restricted Rights Legend Use, duplication, or disclosure by the Government is subject to restrictions set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at 252.277-7013. V1.2 - NDA Required 20 August 18, 2015