IS31SE5000 IR SENSOR FOR TOUCHLESS MOTION AND PROXIMITY DESCRIPTION PROCEDURE The IS31SE5000 is a low-power, reflectance-based The IS31SE5000 evaluation board is fully assembled infrared light sensor with advanced signal processing and tested. Follow the steps listed below to verify and a digital output. The sensor can detect the board operation. movement of nearby objects, making touchless motion Caution: Do not turn on the power supply until all connections possible. are completed. The IS31SE5000 uses one infrared LED to transmit 1) Connect the ground terminal of the power supply and 2-channel receivers which pick up the reflectance to the GND and the positive terminal to the VCC. signal from the 2 photodiodes to perform touchless Or connect the DC power to the connector (DC motion detection. When a horizontal motion or an IN). object approaches, the flag bits in the IS31SE5000 2) Turn on the power supply and pay attention to the status register will be triggered and an interrupt signal supply current. If the current exceeds 800mA, is generated to inform the master to read the flag bit please check for circuit fault. through I2C interface. EVALUATION BOARD OPERATION FEATURES The evaluation board is controlled by an LPC922. Supply voltage from 2.7V~5.5V 400kHz I2C compatible interface IS31SE5000 evaluation board supports both Motion 1A shutdown current and Proximity Modes. Pressing a button switch will select between 4 operating modes. 0.6mA low supply current Detection range can be adjusted 1) Mode 1(Default): Motion Mode (The emitting Motion Mode and Proximity Mode current is 400mA and detect distance is 9cm). The Integrated signal processing and digital output Right LED will light when an object moves from left to right directly above the IRLED and Photo Auto interrupt clear diode. The Left LED will light when an object Package in UTQFN-12 (2mm 2mm) moves from right to left directly above the IRLED and Photo diode. QUICK START 2) Mode 2Motion Mode (The emitting current is 210mA and detect distance is 7.5cm). The Right LED will light when an object moves from left to right directly above the IRLED and Photo diode. The Left LED will light when an object moves from right to left directly above the IRLED and Photo diode. 3) Mode 3Proximity Mode (The emitting current is 400mA and detect distance is 15cm). Both the Left and Right LEDs will light when an object is close to the IRLED and Photo diode. 4) Mode 4Proximity Mode (The emitting current is 210mA and detect distance is 12cm). Both the Left and Right LEDs will light when an object is Figure 1: Photo of IS31SE5000 Evaluation Board close to the IRLED and Photo diode. SOFTWARE SUPPORT RECOMMENDED EQUIPMENT Please refer to the integrated program. 5.0V, 2A power supply The jumper JP1 is closed by default. If you want to use an external MCU to control IS31SE5000, JP1 should be opened, the on board MCU will stop ABSOLUTE MAXIMUM RATINGS working and its I2C ports will be high impedance. Connect the external MCU to the I2C connector TP3 5.5V power supply to control the IC. Caution: Do not exceed the conditions listed above, otherwise Please refer to the datasheet to get more information about the board will be damaged. IS31SE5000. Lumissil Microsystems www.lumissil.com 1 Rev. A, 01/06/2015 IS31SE5000 IR SENSOR FOR TOUCHLESS MOTION AND PROXIMITY ORDERING INFORMATION Part No. Temperature Range Package IS31SE5000-UTLS2-EB -40C ~ +85C (Industrial) UTQFN-12, Lead-free Table 1: Ordering Information For pricing, delivery, and ordering information, please contacts Lumissils analog marketing team at analog Lumissil.com or (408) 969-6600. 3V VCC R9 C3 C4 U3 1uF 0R 10nF D2 U1 R8 0R 10 11 VCC IRLED Optional (Note 1) C6 C7 3V LDO D3 NC 1uF VCC R4 R1 R3 R2 8 RX1 C2 100K 4.7K 4.7K 4.7K D4 1uF SDA 4 SDA SCL 3 SCL U2 7 OPEN=EXT CTRL RX2 INT 2 D5 1 20 SDA INTB P0.0 P0.1 SDB JP1 1 12 2 19 SCL SDB GND P1.7 P0.2 SDB 3 18 IS31SE5000 P1.6 P0.3 P0.4 RST 4 17 RST P0.4 P0.5 5 16 TP3 GND P0.5 3V 3V TP4 3V VCC 5 6 15 CON1 P0.5 GND OSC1 VDD 4 TP1 1 7 1uF P0.4 INT OSC2 C5 3 2 14 R5 RST SDA P0.6 C1 INT 2 3 8 3V GND SCL INT1/P1.4 K1 100K 1 4 13 Right DC IN SDB T1/P0.7 NC 5 9 INT0/P1.3 ICP R7 1k 12 MODE TP2 TXD/P1.0 10 11 T0/P1.2 RXD/P1.1 R6 1k LPC922 Left Figure 2: IS31SE5000 Application Schematic Lumissil Microsystems www.lumissil.com 2 Rev. A, 01/06/2015 1 5 Vdd Vout 2 GND 3 4 EN BP