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PDF VCNL3020 Data sheet ( Hoja de datos )
| Número de pieza | VCNL3020 | |
| Descripción | Fully Integrated Proximity Sensor | |
| Fabricantes | Vishay | |
| Logotipo |  |
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www.vishay.com
VCNL3020
Vishay Semiconductors
Fully Integrated Proximity Sensor with Infrared Emitter,
I2C Interface, and Interrupt Function
IR anode
SDA
INT
SCL
VDD
1
2
3
4
5
10 IR cathode
9 GND
8 GND
7 nc
6 nc
DESCRIPTION
The VCNL3020 is a fully integrated proximity sensor. Fully
integrated means that the infrared emitter is included in the
package. It has 16 bit resolution. It includes a signal
processing IC and features standard I2C communication
interface. It features an interrupt function.
APPLICATIONS
• Proximity sensor for mobile devices (e.g. smart phones,
touch phones, PDA, GPS) for touch screen locking, power
saving, etc.
• Proximity/optical switch for consumer, computing and
industrial devices and displays
FEATURES
• Package type: surface mount
• Dimensions (L x W x H in mm): 4.90 x 2.40 x 0.83
• Integrated infrared emitter, proximity sensor,
and signal conditioning IC
• Interrupt function
• Supply voltage range VDD: 2.5 V to 3.6 V
• Supply voltage range IR anode: 2.5 V to 5 V
• Communication via I2C interface
• I2C Bus H-level range: 1.7 V to 5 V
• Floor life: 72 h, MSL 4, acc. J-STD-020
• Low stand by current consumption: 1.5 μA
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
PROXIMITY FUNCTION
• Built-in infrared emitter and photo-pin-diode for proximity
function
• 16 bit effective resolution for proximity detection range
ensures excellent cross talk immunity
• Programmable LED drive current from 10 mA to 200 mA in
10 mA steps
• Excellent ambient light suppression by signal modulation
• Proximity distance up to 200 mm
PRODUCT SUMMARY
PART NUMBER
OPERATING RANGE
(mm)
VCNL3020
1 to 200
Note
(1) Adjustable through I2C interface
OPERATING
VOLTAGE RANGE
(V)
2.5 to 3.6
I2C BUS
VOLTAGE RANGE
(V)
1.7 to 5
LED PULSE
CURRENT (1)
(mA)
10 to 200
OUTPUT CODE
16 bit, I2C
Rev. 1.0, 25-Jun-12
1 Document Number: 84150
For technical questions, contact: [email protected]
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?F9re1e00D0atasheet http://www.datasheet4u.com/
1 page  
www.vishay.com
VCNL3020
Vishay Semiconductors
2. I2C Interface
The VCNL3020 contains seventeen 8 bit registers for operation control, parameter setup and result buffering. All registers are
accessible via I2C communication. Figure 13 shows the basic I2C communication with VCNL3020.
The built in I2C interface is compatible with all I2C modes (standard, fast, and high speed).
I2C H-level range = 1.7 V to 5 V.
Please refer to the I2C specification from NXP for details.
Send byte Write command to VCNL3020
S Slave address
Wr A Register address
A
Data byte
AP
Receive byte Read data from VCNL3020
S Slave address
Wr A Register address
AP
S Slave address
Rd A
Data byte
AP
S = start condition
P = stop condition
A = acknowledge
Host action
VCNL3020 response
Fig. 10 - Send Byte/Receive Byte Protocol
22313-3
Device Address
The VCNL3020 has a fix slave address for the host
programming and accessing selection. The predefined 7 bit
I2C bus address is set to 0010 011 = 13h. The least
significant bit (LSB) defines read or write mode. Accordingly
the bus address is set to 0010 011x = 26h for write, 27h for
read.
Register Addresses
VCNL3020 has seventeen user accessible 8 bit registers.
The register addresses are 80h (register #0) to 90h
(register #16).
REGISTER FUNCTIONS
Register #0 Command Register
Register address = 80h
The register #0 is for starting proximity measurements. This register contains a flag bit for data ready indication.
TABLE 1 - COMMAND REGISTER #0
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
config_lock
n/a prox_data_rdy n/a
prox_od
n/a
prox_en
selftimed_en
Description
config_lock
Read only bit. Value = 1
prox_data_rdy
Read only bit. Value = 1 when proximity measurement data is available in the result registers. This bit will
be reset when one of the corresponding result registers (reg #7, reg #8) is read.
prox_od
R/W bit. Starts a single on-demand measurement for proximity.
Result is available at the end of conversion for reading in the registers #7(HB) and #8(LB).
prox_en
R/W bit. Enables periodic proximity measurement
selftimed_en
R/W bit. Enables state machine and LP oscillator for self timed measurements; no measurement is
performed until the corresponding bit is set
Note
• Beside prox_en first selftimed_en needs to be set. On-demand measurement mode is disabled if selftimed_en bit is set. For the selftimed_en
mode changes in reading rates (reg #2) can be made only when b0 (selftimed_en bit) = 0.
Rev. 1.0, 25-Jun-12
5 Document Number: 84150
For technical questions, contact: [email protected]
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?F9re1e00D0atasheet http://www.datasheet4u.com/
5 Page 
www.vishay.com
TAPE AND REEL DIMENSIONS in millimeters
VCNL3020
Vishay Semiconductors
Rev. 1.0, 25-Jun-12
11 Document Number: 84150
For technical questions, contact: [email protected]
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?F9re1e00D0atasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet VCNL3020.PDF ] | |
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