THCS132_Rev.1.01_E THCS132 I/OSpreader General Description Features The THCS132 provides a function to serialize multiple parallel signals into single-ended serial line at least or to deserialize the data stream over single-ended serial line or single differential pair into multiple parallel signals. This small number of transmission line simplifies system configuration and reduces system cost including cable width, connector size and pins and PCB layout area. The THCS132 is offered in 8bit/16bit parallel IOs as host MPU interface. It can transfer 16bit independent parallel signals to remote side by only 1-line or 1-pair cable. Also, the THCS132 set as master device can control plural slave devices by transmitting and receiving data that is designated as a device address. Transmitter, receiver or transceiver function can be selected by pin options. - No External Clock Required. -8bit/16bit Parallel IOs to MPU. - Uni-directional/Bi-directional Mode Selectable - Single-ended/Differential Mode (noise tolerant) Selectable - AC Coupling Supported with Differential Mode - Transmission Status Error Indicator Supported (Line Cut Detection and Packet Error Detection) - Digital Filter Function. - Power supply : 3.0 to 5.5V - QFN 32-pin Package - EU RoHS Compliant Block Diagram THCS132 Copyright©2014 THine Electronics, Inc. 1/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E BID FAULTN RSTN DATA0 DATA1 DATA2 DATA3 DATA4 25 26 27 28 29 30 31 32 DIR TEST GND NC NC VDD WIDTH FILT Pin Diagram 1 24 2 23 3 4 5 6 22 Exposed Pad (Top View) 33 GND EXP 21 20 19 7 18 8 17 SIG IOP ION DATA15 DATA14 DATA13 DATA12 GND GND DATA5 DATA6 DATA7 DATA8 DATA9 DATA10 DATA11 9 10 11 12 13 14 15 16 Pin Description Pin No. Pin Name Internal Processing 1 BID Input, Pull-down 2 FAULTN Output, Open-drain 3 RSTN Input, Pull-down 4-8 10-16 18-21 DATA0-15 Input/Output, Pull-up 9,17,30 GND - 22 ION Input/Output Serial data differential mode(-) I/O 23 IOP Input/Output Serial data CMOS/differential mode(+) I/O 24 SIG Input, Pull-down Serial data I/O mode select Low : CMOS High : Differential 25 FILT Input, Pull-down Digital filter enable pin Low : OFF High : ON 26 WIDTH Input, Pull-down Data bit width select Low : 8bit High : 16bit 27 VDD - Power Supply 28,29 NC - Non-connection pin. Please set it being opened. 31 TEST Input, Pull-down Test pin. Please connect to GND. Transmitter/receiver select Low : Transmitter (Uni-direction) / Master (Bi-direction) High : Receiver (Uni-direction) / Slave (Bi-direction) 32 DIR Input, Pull-down 33 GND EXP - Description Uni-direction/Bi-direction mode select Low : Uni-direction High : Bi-direction Transmitter status error indicator Low : Abnormal operation detected Reset input Low : Reset High : Normal operation Parallel data I/O bit : 0-15 Refer to the tables of “Parallel I/O Pin Function” Ground GND EXP should be soldered to GND. Copyright©2014 THine Electronics, Inc. 2/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Absolute Maximum Rating Parameter Condition Min Typ Max Unit - -0.4 - 6 V -0.4 - 6 V - -0.4 - 6 V Ta=25℃ - - 2 W Storage Temperature - -55 - 150 ℃ Junction Temperature - - - 125 ℃ Condition Min Typ Max Unit Power Supply Voltage VDD - 3.0 - 5.5 V Ambient Operating Temperature - -40 - 85 ℃ Power Supply Voltage VDD Digital Input Voltage (DATA0-DAT15,WIDTH,BID,FILT,DIR,SIG, RSTN) Open-drain Output Pin(FAULTN) Allowable Power Dissipation - Recommended Operating Condition Parameter Copyright©2014 THine Electronics, Inc. 3/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Electrical Characteristic DC Characteristics （at VDD＝5.0V, Ta=25℃, unless otherwise noted） Parameter Condition Min Typ Max Unit - 20 30 mA Mode E Power Supply Current LVDS mode (Note) UVLO Threshold Voltage (VDD Rising) - - 2.6 2.8 V UVLO Hysteresis Voltage - - 0.15 - V Digital Input High-level Voltage (VIH) - 0.7VDD - - V Digital Input Low level Voltage (VIL) - - - 0.3VDD V Digital Input Leakage Current 1 - - - +/-50 uA Digital Input Hysteresis Voltage VDD=3.0V - 0.11VDD - V Tj=125℃ VDD-0.6 - - V Digital Output High-level Voltage (VOH) Iout=4mA Digital Output High-level ON Resistance VDD=3.3V - 56 - Ohm (RonH) VDD=5.0V - 46 - Ohm - - 0.4 V VDD=3.0V Digital Output Low-level Voltage (VOL) Tj=125℃ Iout=4mA Digital Output Low-level ON Resistance VDD=3.3V - 44 - Ohm (RonL) VDD=5.0V - 36 - Ohm - - 0.4 V Open Drain Output Low-level Voltage Iout=1mA FAULTN LVDS Differential Input Voltage (VID) IOP/ION 200 - - mV LVDS Input Leakage Current IOP/ION - - +/-50 uA 350 - - mV - 600 - mV - - 750 mV IOP/ION 1.0 1.25 1.4 V - - 250 - kOhm VDD=3.0V IOP/ION LVDS Differential Output Voltage (VOD) VDD=5.0V IOP/ION VDD=5.5V IOP/ION LVDS Output Common-mode Voltage (VOC) Pull-down Resistance Pull-up Resistance 500 kOhm Note: The power supply current is maximum in this condition. Copyright©2014 THine Electronics, Inc. 4/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E LVDS Input Output Differential Voltage ION ION VOC VID VOD IOP IOP Electrical Characteristic AC Characteristics (Reset Section) Mark tRST tWRST Parameter Time from Reset (RSTN) Release to Valid Input Reset (RSTN) Low Pulse Width Condition Min Typ - - - - 50 - Max 100 (Note) - Unit us ns Note : In AC coupling, tRST changes with the capacity to connect. Timing Chart (Reset Section) Rese t（RSTN) signal tWRST Input Reset(RSTN) tRST Input data/Bi-direction (DATA) Valid data Output data（DATA) 500kΩpull up Output Low Vaild data output In the case of the mode F, output is controlled by signal of output enable (OEN_L/OEN_U), a pull-up state is continued until it sets signal of output enable to LOW. Electrical Characteristic AC Characteristics (Serial Communication) Mark fPSPLa fPSPLb Item Serializer Input Sampling Frequency (Uni-direction) Serializer Input Sampling Frequency (Bi-direction) Condition Min Typ Max Unit BID=L 50 - - kHz BID=H 30 - - kHz tPSa Time of Serializer Transmission (Uni-direction) BID=L - - 18 us tSPa Deserializer Output Renewal Time (Uni-direction) BID=L - - 2 us tPSb Time of Serializer Transmission (Bi-direction) BID=H - - 14 us tSPb Deserializer Output Renewal Time (Bi-direction) BID=H - - 2 us fSTR Serial Data Transmission Rate - - 2.5 - MHz Copyright©2014 THine Electronics, Inc. 5/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Timing Chart (Uni-direction Mode) Transmitter Mode Internal Register Input (DATA[15:0]) Parallel Input[15:0] 1/fPSPLa Internal Sampling Clock tPSa Serial Data Output Receiver Mode Serial Data Input Serial Output Serial Output Serial Input Serial Input Internal Register Output (DATA[15:0]) Parallel Output[15:0] tSPa Timing Chart (Bi-direction Mode) Master device Input data(DATA[7:0]) Parallel input [7:0] Output data(DATA[7:0]) Parallel output [7:0] 1/fPSPLb Internal sampling clock tPSb Input/Output Serial data Serial output Serial input Slave device Input/Output Serial data Serial input Serial output tSPb Serial output Serial input Internal sampling clock tPSb Output data(DATA[7:0]) Parallel output [7:0] tSPb Input data (DATA[7:0]) Parallel input [7:0] Copyright©2014 THine Electronics, Inc. 6/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Electrical Characteristic AC Characteristics (Latch Enable, Output Enable) Symbol tWLE tSULE tHLE tCLLEa tCLLEb1 Parameter Condition Min Typ Max Unit - 130 - - ns - 133 - - ns - 20 - - ns - 100 - - ns - 20 - - us Latch Enable（LEN_U/LEN_L/LEN）Pulse Width Latch Enable （LEN_U/LEN_L/LEN）Rise Edge Setup Time Latch Enable （LEN_U/LEN_L/LEN）Rise Edge Hold Time Latch Enable （LEN_U/LEN_L/LEN） Clearance1 Latch Enable （LEN_U/LEN_L/LEN） Clearance2 （Uni-direction） tCLLEb2 Latch Enable （LEN）Clearance2（Bi-direction） - 40 - - us tWOE Output Enable （OEN_U/OEN_L）Pulse Width - 50 - - ns tCLOE Output Enable （OEN_U/OEN_L）Clearance - 50 - - ns tPZO Output Enable （OEN_U/OEN_L）Delay Time CL=25pF - - 50 ns tPOZ Output Disable （OEN_U/OEN_L）Delay Time CL=25pF - - 38 ns Timing Chart (Latch Enable, Output Enable) 8bit Input + Latch Enable Upper Latch Enable （LEN_U） Lower Latch Enable （LEN_L） Data Input (DATA[7:0]) tWLE tCLLEb1 tCLLEa tSULE tHLE Upper 8bit data Lower 8bit data Upper 8bit data 8bit Output+ Output Enable Upper Output Enable （OEN_U） Lower Output Enable （OEN_L） Data Output (DATA[7:0]) tCLOE tWOE tPZO tPOZ Upper 8bit data Lower 8bit data When receiving new incoming data during OEN_U or OEN_L = Low, output data is updated to this new data . Copyright©2014 THine Electronics, Inc. 7/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E 8bit Input/Output + Latch enable・Output enable tWLE Input latch enable (LEN) output enable (OEN) Input/Output data (DATA[7:0]) tCLLEb2 tWOE tSULE tHLE tPZO Transmitter data tPOZ Receive ｒ data Transmitter data When receiving new incoming data during OEN = Low, output data is updated to this new data Functional Description ・Functional Description List for Mode Pin Pin Name Mode Name WIDTH A B C L H H D E L F G BID L H H L I H Operating Mode DIR DATA10 DATA11 L - - 16bit / Bi-direction / Transmitter H - - 16bit / Bi-direction / Receiver L - - 8bit / Bi-direction / Transmitter・Receiver Master H - - 8bit / Bi-direction / Transmitter・Receiver Slave L H 8bit（Upper・Lower）/ Uni-direction / Transmitter L L L 8bit（Upper・Lower）/ Uni-direction / Receiver 8bit（Upper・Lower）/ Bi-direction / Transmitter・ Receiver Master 8bit / Uni-direction / Transmitter Address Appointment H - H 7-bit / Bi-direction / Transmitter Address Appointment Slave Copyright©2014 THine Electronics, Inc. 8/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E ・Mode Connectable Table Mode Name A B A B C D G H v v Operating Mode 16bit / Uni-direction / Transmitter v 16bit / Uni-direction / Receiver v v v E I v v D 8bit / Bi-direction / Transmitter・Receiver Master v v 8bit / Bi-direction / Transmitter・Receiver Master v v v 8bit（Upper・Lower）/ Uni-direction / Transmitter v G H F v C F E v 8bit（Upper・Lower）/ Uni-direction / Receiver v v 8bit（Upper・Lower）/ Bi-direction / Transmitter・ v Receiver Master v I 8bit / Uni-direction / Receiver Address Appointment v 7-bit / Bi-direction / Transmitter Address Appointment v Slave ・「v」mark indicates a possible connection mode. ・Parallel I/O Pin Function (Mode A, B, C, D) WIDTH High （16bit） BID Low （Uni-direction） Low （Uni-direction） High （Bi-direction） High （Bi-direction） DIR Low （Transmitter） High （Receiver） Low （Master） High （Slave） Mode A B C D DATA0 I/O Function Name I/O Function Name I/O Function Name I/O Function Name I DIN0 O DOUT0 I DIN0 I DIN0 DOUT1 I DIN1 I DIN1 DATA1 I DIN1 O DATA2 I DIN2 O DOUT2 I DIN2 I DIN2 DATA3 I DIN3 O DOUT3 I DIN3 I DIN3 DATA4 I DIN4 O DOUT4 I DIN4 I DIN4 DATA5 I DIN5 O DOUT5 I DIN5 I DIN5 DATA6 I DIN6 O DOUT6 I DIN6 I DIN6 DATA7 I DIN7 O DOUT7 I DIN7 I DIN7 DATA8 I DIN8 O DOUT8 O DOUT0 O DOUT0 DATA9 I DIN9 O DOUT9 O DOUT1 O DOUT1 DATA10 I DIN10 O DOUT10 O DOUT2 O DOUT2 DATA11 I DIN11 O DOUT11 O DOUT3 O DOUT3 DATA12 I DIN12 O DOUT12 O DOUT4 O DOUT4 DATA13 I DIN13 O DOUT13 O DOUT5 O DOUT5 DATA14 I DIN14 O DOUT14 O DOUT6 O DOUT6 DATA15 I DIN15 O DOUT15 O DOUT7 O DOUT7 Copyright©2014 THine Electronics, Inc. 9/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Connection Examples (Mode A, B, C, D) Mode A DIN[15:0] Mode B Serialize DOUT[15:0] Deserialize Mode C Mode D DOUT[7:0] DIN[7:0] Serialize ＆ Deserialize Serialize ＆ Deserialize DIN[7:0] DOUT[7:0] Parallel I/O Pin Function (Mode E, F, G) WIDTH Low （8bit Upper・Lower） BID Low （Uni-direction） Low （Uni-direction） High （Bi-direction） DIR Low （Transmitter） High （Transmitter） Low （Master） Mode E F G I/O Function Name I/O Function Name I/O Function Name DATA0 I DIN0 O DOUT0 IO DIO0 DATA1 - - - - - - DATA2 I DIN1 O DOUT1 IO DIO1 DATA3 - - - - - - DATA4 I DIN2 O DOUT2 IO DIO2 DATA5 - - - - - - DATA6 I DIN3 O DOUT3 IO DIO3 DATA7 - - - - - - DATA8 I LEN_L I OEN_L I LEN DATA9 I LEN_U I OEN_U I OEN DATA10 I Low I Low I Low DATA11 I Low I Low I Low DATA12 I DIN4 O DOUT4 IO DIO4 DATA13 I DIN5 O DOUT5 IO DIO5 DATA14 I DIN6 O DOUT6 IO DIO6 DATA15 I DIN7 O DOUT7 IO DIO7 *Non-functional pins marked as “-” are pulled up by 500kΩ internally Copyright©2014 THine Electronics, Inc. 10/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Connection Example (Mode E, F, G) Mode E Latch circuit DIN[7:0] Mode F Serialize Deserialize Selector DOUT[7:0] LEN_U OEN_U LEN_L OEN_L Mode G Mode D DOUT[7:0] Latch Circuit ＆ I/O conversion DIO[7:0] Serialize ＆ Deserialize Serialize ＆ Deserialize DIN[7:0] LEN OEN ・Latch Enable, Output Enable Truth Table Mode E LEN_U LEN_L Latch Enable Input L L ↑ H Upper 8bit input latch H ↑ Lower 8bit input latch and 16bit data reception H H Keep data Lower 8bit is transmitted by sampling frequency (8bit through mode) The rising edge of LEN_L is the trigger for sampling of upper and lower data. Mode F OEN_U OEN_L Output Enable Input L L L H Upper 8bit Output enable H L Lower 8bit Output enable H H Output disable （DATA pins are pulled up by 500kΩ internally） Output disable （DATA pins are pulled up by 500kΩ internally） Copyright©2014 THine Electronics, Inc. 11/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Mode G LEN OEN L L Prohibition ↑ H 8bit Input Latch H L 8bit Output enable H H Latch Enable、Output Enable Input Output disable （DATA pins are pulled up by 500kΩ internally） ・Parallel I/O Pin Function (Mode H, I) WIDTH Low （8 / 7bit Upper・Lower） BID Low （Uni-direction） High （Bi-direction） DIR High （Reception） High （Reception） Mode H I I/O Function Name I/O Function Name DATA0 O DOUT0 I DIN0 DATA1 O DOUT1 I DIN1 DATA2 O DOUT2 I DIN2 DATA3 O DOUT3 I DIN3 DATA4 O DOUT4 I DIN4 DATA5 O DOUT5 I DIN5 DATA6 O DOUT6 I DIN6 DATA7 O DOUT7 I Low DATA8 - - - - DATA9 - - - - DATA10 - - - - DATA11 I High I High DATA12 I ADDR0 I ADDR0 DATA13 I ADDR1 I ADDR1 DATA14 I ADDR2 I ADDR2 DATA15 I ADDR3 I ADDR3 *Non-functional pins marked as “-” are pulled up by 500kΩ internally Copyright©2014 THine Electronics, Inc. 12/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Connection Examples (Mode H, I) Mode E Address DIN[7:0] Latch circuit ModeH Address Data Address Serialize Data LEN_U DOUT[7:0] Deserialize Data LEN_L LEN_U：Address latch LEN_L：Data latch ADDR[3:0] Mode H Address DOUT[7:0] Deserialize Data ADDR[3:0] Mode G Address Mode I Address DIO[7:0] Latch circuit ＆ I/O conversion Serialize ＆ Deserialize Data Serialize ＆ Deserialize DIN[6:0] Data LEN OEN DIN7 fixed on GND Transmit device adress ADDR[3:0] Mode I Address Serialize ＆ Deserialize DIN[6:0] Data DIN7 fixed on GND ADDR[3:0] Device Address (Mode H, I) As to transmitter device, set device address into upper 8bit and data into lower 8bit. The device address is selectable out of 15 addresses( 10000001b～10001111b（81h～8Fh）) The upper 4 bits of receiver device address is fixed as 1000b, and lower 4 bits are set by ADDR[3:0] pins. Mode H offers to output the same data from all devices. Set to broadcast device address as 10000000b (80h). Mode I is not able to handle Broadcast. Copyright©2014 THine Electronics, Inc. 13/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Function Setup for Serial I/O Pins IOP and ION pins are set as 1 line CMOS I/O or 2-lane LVDS I/O with a SIG pin. Pin Setup Pin Function Description SIG IOP ION L CMOS I/O * H Differential mode I/O＋ Differential mode I/O CMOS I/O Differential mode I/O ＊: Please keep pin being opened(No connection) Function of Transmission Status Error Indicator, FAULTN (Receiver mode) FAULTN is the output pin. When the protocol of received data is not correct or serial data more than 50usec (typ) is not received, FAULTN pin will be changed into low level. The received data is canceled when a FAULTN pin outputs Low. When normal serial data is received, a FAULTN pin outputs High in case of pulled up externally. Digital Filter Function When FILT pin is set to high level, the digital filter function is active. If the transmitter matches the 3 sampling frequency content with the deserialized parallel data, it is updated as the correct data. Writing and Reading of Parallel Data by Serial Communication The THCS132 is able to write and read data by 3-wire serial I/F on 16bit register. Electrical Characteristic AC Characteristics (3-wire Serial I/O Unit) Mark Parameter Condition Min Typ Max Unit fSCK tCH SCK Frequency SCK High period - 50 - 10 - MHz ns tCL SCK Low period - 50 - - ns tDVCH SI Setup time - 10 - - ns tCHDX SI Hold time - 15 - - ns tCHSL CSN Not Active Hold time - 10 - - ns tSLCH CSN Active Setup time - 200 - - ns tCHSH CSN Active Hold time - 50 - - ns tSHCH CSN Not Active Set up time - 50 - - ns tSHSL CSN Not Active period - 2 - - us tSLSO Delay time From CSN Fall to SO Output CL=25pF - - 190 ns tCLSO Delay time From SCK Fall to SO Output CL=25pF - - 40 ns Copyright©2014 THine Electronics, Inc. 14/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Timing Chart (3-wire Serial I/O Unit) CSN tSHSL tCHSL tSLCH tCL tCHSH tCH tSHCH SCK tDVCH tCHDX SI tSLSO tCLSO SO Function Description Mode Pin Function Setting List Pin Name Mode Name WIDTH A serial B serial C serial L BID DIR L L L H H L Etc DATA10:H DATA11:L Copyright©2014 THine Electronics, Inc. 15/19 Operating Mode Serial / Uni-direction / Transmitter Serial / Uni-direction / Receiver Serial / Bi-direction / Master THine Electronics, Inc. Security E THCS132_Rev.1.01_E Parallel I/O Pin Function (Mode A serial, B serial, C serial) WIDTH Low（3 lines serial） BID Low（Uni-direction） Low（Uni-direction） High（Bi-direction） DIR Low（Transmitter） High（Transmitter） Low（Master） Mode A Serial B Serial C Serial I/O Function name I/O Function name I/O Function name I CSN I CSN I CSN DATA1 I SCK I SCK I SCK DATA2 I SI - - I SI DATA3 - - O SO O SO DATA4 - - - - - - DATA5 - - - - - - DATA6 - - - - - - DATA7 - - - - - - DATA8 - - - - - - DATA9 - - - - - - DATA10 I High I High I High DATA11 I Low I Low I Low DATA12 - - - - - - DATA13 - - - - - - DATA14 - - - - - - DATA15 - - - - - - DATA0 * Unnamed pin is pulled up by 500kΩ internally. Connection Examples (Mode A serial, B serial, C serial) Mode A serial CSN SCK SI Serial I/F Mode B serial Serialize Deserialize Copyright©2014 THine Electronics, Inc. 16/19 Serial I/F CSN SCK SO THine Electronics, Inc. Security E THCS132_Rev.1.01_E Mode C Serial CSN SCK SI SO Mode D DOUT[7:0] Serial I/F Serialize ＆ Deserialize Serialize ＆ Deserialize DIN[7:0] Copyright©2014 THine Electronics, Inc. 17/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Package Unit: mm Copyright©2014 THine Electronics, Inc. 18/19 THine Electronics, Inc. Security E THCS132_Rev.1.01_E Notices and Requests 1. The product specifications described in this material are subject to change without prior notice. 2. The circuit diagrams described in this material are examples of the application which may not always apply to the customer’s design. We are not responsible for possible errors and omissions in this material. Please note if errors or omissions should be found in this material, we may not be able to correct them immediately. 3. This material contains our copyright, know-how or other proprietary. Copying or disclosing to third parties the contents of this material without our prior permission is prohibited. 4. Note that if infringement of any third party’s industrial ownership should occur by using this product, we will be exempted from the responsibility unless it directly relates to the production process or functions of the product. 5. This product is presumed to be used for general electric equipment, not for the applications which require very high reliability (including medical equipment directly concerning people’s life, aerospace equipment, or nuclear control equipment). Also, when using this product for the equipment concerned with the control and safety of the transportation means, the traffic signal equipment, or various Types of safety equipment, please do it after applying appropriate measures to the product. 6. Despite our utmost efforts to improve the quality and reliability of the product, faults will occur with a certain small probability, which is inevitable to a semi-conductor product. Therefore, you are encouraged to have sufficiently redundant or error preventive design applied to the use of the product so as not to have our product cause any social or public damage. 7. Please note that this product is not designed to be radiation-proof. 8. Customers are asked, if required, to judge by themselves if this product falls under the category of strategic goods under the Foreign Exchange and Foreign Trade Control Law. 9. The product or peripheral parts may be damaged by a surge in voltage over the absolute maximum ratings or malfunction, if pins of the product are shorted by such as foreign substance. The damageｓ may cause a smoking and ignition. Therefore, you are encouraged to implement safety measures by adding protection devices, such as fuses. THine Electronics, Inc. [email protected] Copyright©2014 THine Electronics, Inc. 19/19 THine Electronics, Inc. Security E