Datasheet VCNL36828P (Vishay) - 9
| Fabricante | Vishay |
| Descripción | A Small Package Proximity Sensor With a VCSEL, Low Idle Current, I 2C Interface, and Smart Dual Slave Address |
| Páginas / Página | 20 / 9 — VCNL36828P. Application Circuit With a Single Device - Slave Address … |
| Formato / tamaño de archivo | PDF / 287 Kb |
| Idioma del documento | Inglés |
VCNL36828P. Application Circuit With a Single Device - Slave Address 0x51. Host. Microcontroller
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VCNL36828P
www.vishay.com Vishay Semiconductors
Application Circuit With a Single Device - Slave Address 0x51
On the other hand, when pins 5 and 6 are connected to the data and clock signal from the microcontroller, as shown in Fig. 13, they will then be configured as an SDA pin and SCL pin, respectively. The 7 bit slave address option of 0x51 will be automatically selected. VPULL UP R R R 1 2 3 V V (2) DD DD C1
VCNL36828P Host
(slave address: 0x51)
Microcontroller
V VCSEL (4) VCSEL A C2 SCL (5) SCL SDA (6) SDA GND (3) INT (1) INT (GPIO) Fig. 13 - Application Circuit Example for a Single VCNL36828P - Slave Address 0x51 Table 2 shows the required values and the explanation for the individual application circuit parameters.
TABLE 2 - APPLICATION CIRCUIT PARAMETERS CIRCUIT VALUE DESCRIPTION PARAMETER
A stable power supply such as a low dropout regulator or a switching regulator is required; the VDD 1.65 V to 2.00 V power supply isolation can be further improved with a decoupling capacitor C1 A stable power supply such as a low dropout regulator or a switching regulator that can supply an adequate amount of power (max. VCSEL pulse driving current of 20 mA) is required; the power VVCSEL 2.62 V to 3.60 V supply isolation can be further improved with a decoupling capacitor C2; the minimum voltage depends on the selected driving current of the VCSEL; please refer to Table VVCSEL, min. for reference A stable power supply such as a low dropout regulator or a switching regulator is required; VPULL UP 1.2 V to 3.6 V a voltage level shifter is required if the I2C bus voltage from the microcontroller is higher than 3.6 V C1 - C4 100 nF to 1 μF Decoupling capacitors are recommended to reduce the noise in the supply voltage R1 - R2 2.2 kΩ to 4.7 kΩ Pull-up resistors within the range of 2.2 kΩ to 4.7 kΩ are recommended; any increase in bus capacitance or resistance will increase the logic high transition time R3 4.7 kΩ to 22 kΩ Pull-up resistor within the range of 4.7 kΩ to 22 kΩ is recommended Rev. 1.2, 16-Nov-2023
9
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
Application Circuit With a Single Device - Slave Address 0x51
On the other hand, when pins 5 and 6 are connected to the data and clock signal from the microcontroller, as shown in Fig. 13, they will then be configured as an SDA pin and SCL pin, respectively. The 7 bit slave address option of 0x51 will be automatically selected. VPULL UP R R R 1 2 3 V V (2) DD DD C1
VCNL36828P Host
(slave address: 0x51)
Microcontroller
V VCSEL (4) VCSEL A C2 SCL (5) SCL SDA (6) SDA GND (3) INT (1) INT (GPIO) Fig. 13 - Application Circuit Example for a Single VCNL36828P - Slave Address 0x51 Table 2 shows the required values and the explanation for the individual application circuit parameters.
TABLE 2 - APPLICATION CIRCUIT PARAMETERS CIRCUIT VALUE DESCRIPTION PARAMETER
A stable power supply such as a low dropout regulator or a switching regulator is required; the VDD 1.65 V to 2.00 V power supply isolation can be further improved with a decoupling capacitor C1 A stable power supply such as a low dropout regulator or a switching regulator that can supply an adequate amount of power (max. VCSEL pulse driving current of 20 mA) is required; the power VVCSEL 2.62 V to 3.60 V supply isolation can be further improved with a decoupling capacitor C2; the minimum voltage depends on the selected driving current of the VCSEL; please refer to Table VVCSEL, min. for reference A stable power supply such as a low dropout regulator or a switching regulator is required; VPULL UP 1.2 V to 3.6 V a voltage level shifter is required if the I2C bus voltage from the microcontroller is higher than 3.6 V C1 - C4 100 nF to 1 μF Decoupling capacitors are recommended to reduce the noise in the supply voltage R1 - R2 2.2 kΩ to 4.7 kΩ Pull-up resistors within the range of 2.2 kΩ to 4.7 kΩ are recommended; any increase in bus capacitance or resistance will increase the logic high transition time R3 4.7 kΩ to 22 kΩ Pull-up resistor within the range of 4.7 kΩ to 22 kΩ is recommended Rev. 1.2, 16-Nov-2023
9
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