Datasheet VCNL36828P (Vishay) - 8
| Manufacturer | Vishay |
| Description | A Small Package Proximity Sensor With a VCSEL, Low Idle Current, I 2C Interface, and Smart Dual Slave Address |
| Pages / Page | 20 / 8 — VCNL36828P. APPLICATION INFORMATION Slave Address Selection. TABLE 1 - … |
| File Format / Size | PDF / 287 Kb |
| Document Language | English |
VCNL36828P. APPLICATION INFORMATION Slave Address Selection. TABLE 1 - SLAVE ADDRESS TABLE. PIN 5. PIN 6. 7 BIT SLAVE ADDRESS
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VCNL36828P
www.vishay.com Vishay Semiconductors Axis Title Axis Title 100 000 10000 100 000 10000 7 mA 12 mA 10 000 7 mA 10 000 20 mA 12 mA 20 mA 1000 (Counts) 1000 (Counts) 1000 ine 1000 lue ine lue a ne ne a ne ne 2nd l V 2nd l V ity 1st li 2nd li ity 1st li 2nd li 100 im 100 im PS_IT = 1T, 100 PS_IT = 8T, 100 rox rox P PS_ITB = 50 μs, P PS_ITB = 50 μs, 10 PS_GAIN = 2x, 10 PS_GAIN = 2x, PS_HD = 16 bit, PS_HD = 16 bit, Media = Kodak Media = Kodak Gray Card Gray Card 1 10 1 10 0.1 1 10 100 0.1 1 10 100 Distance to Reflecting Card (mm) Distance to Reflecting Card (mm) Fig. 10 - Proximity Value vs. Distance Fig. 11 - Proximity Value vs. Distance
APPLICATION INFORMATION Slave Address Selection
The VCNL36828P supports a smart dual slave address where the designer can change the slave address by swapping the SCL and SDA pins, as shown in Table 1.
TABLE 1 - SLAVE ADDRESS TABLE PIN 5 PIN 6 7 BIT SLAVE ADDRESS 8 BIT SLAVE ADDRESS (WRITE) 8 BIT SLAVE ADDRESS (READ)
SCL SDA 0x60 0xC0 0xC1 SDA SCL 0x51 0xA2 0xA3 A smart dual slave address provides the flexibility for the designer to connect two devices from two different slave addresses on the same I2C bus. Besides that, the two slave address options allow designers to select a different slave address if one is used by the other slave devices on the same I2C bus in a single device application.
Application Circuit With a Single Device - Slave Address 0x60
Fig. 12 shows an application circuit example with a single device. As described in Table 1, when pins 5 and 6 are connected to the clock and data signal from the microcontroller, as shown in Fig. 12, they will then be configured as an SCL pin and SDA pin, respectively. The 7 bit slave address option of 0x60 will be automatically selected. V PULL UP R R R 1 2 3 V V (2) DD DD C1
VCNL36828P Host microcontroller
(slave address: 0x60) V VCSEL (4) VCSEL A C2 SCL (5) SCL SDA (6) SDA GND (3) INT (1) INT (GPIO) Fig. 12 - Application Circuit Example for a Single VCNL36828P - Slave Address 0x60 Rev. 1.2, 16-Nov-2023
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Document Number: 80306 For technical questions, contact: sensorstechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
www.vishay.com Vishay Semiconductors Axis Title Axis Title 100 000 10000 100 000 10000 7 mA 12 mA 10 000 7 mA 10 000 20 mA 12 mA 20 mA 1000 (Counts) 1000 (Counts) 1000 ine 1000 lue ine lue a ne ne a ne ne 2nd l V 2nd l V ity 1st li 2nd li ity 1st li 2nd li 100 im 100 im PS_IT = 1T, 100 PS_IT = 8T, 100 rox rox P PS_ITB = 50 μs, P PS_ITB = 50 μs, 10 PS_GAIN = 2x, 10 PS_GAIN = 2x, PS_HD = 16 bit, PS_HD = 16 bit, Media = Kodak Media = Kodak Gray Card Gray Card 1 10 1 10 0.1 1 10 100 0.1 1 10 100 Distance to Reflecting Card (mm) Distance to Reflecting Card (mm) Fig. 10 - Proximity Value vs. Distance Fig. 11 - Proximity Value vs. Distance
APPLICATION INFORMATION Slave Address Selection
The VCNL36828P supports a smart dual slave address where the designer can change the slave address by swapping the SCL and SDA pins, as shown in Table 1.
TABLE 1 - SLAVE ADDRESS TABLE PIN 5 PIN 6 7 BIT SLAVE ADDRESS 8 BIT SLAVE ADDRESS (WRITE) 8 BIT SLAVE ADDRESS (READ)
SCL SDA 0x60 0xC0 0xC1 SDA SCL 0x51 0xA2 0xA3 A smart dual slave address provides the flexibility for the designer to connect two devices from two different slave addresses on the same I2C bus. Besides that, the two slave address options allow designers to select a different slave address if one is used by the other slave devices on the same I2C bus in a single device application.
Application Circuit With a Single Device - Slave Address 0x60
Fig. 12 shows an application circuit example with a single device. As described in Table 1, when pins 5 and 6 are connected to the clock and data signal from the microcontroller, as shown in Fig. 12, they will then be configured as an SCL pin and SDA pin, respectively. The 7 bit slave address option of 0x60 will be automatically selected. V PULL UP R R R 1 2 3 V V (2) DD DD C1
VCNL36828P Host microcontroller
(slave address: 0x60) V VCSEL (4) VCSEL A C2 SCL (5) SCL SDA (6) SDA GND (3) INT (1) INT (GPIO) Fig. 12 - Application Circuit Example for a Single VCNL36828P - Slave Address 0x60 Rev. 1.2, 16-Nov-2023
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Document Number: 80306 For technical questions, contact: sensorstechsupport@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
