TCS3404CS TAOS, TCS3404CS Datasheet - Page 29

• Manufacturer Part Number: TCS3404CS
• Description: Photodiodes TriColor Sensor RGB, Clear Ch
• Manufacturer: TAOS
• Type: Digital Color Light Sensorr

Specifications of TCS3404CS

• Peak Wavelength: 470 nm to 640 nm
• Maximum Light Current: 11 ma
• Maximum Dark Current: 10 mA
• Maximum Rise Time: 50 ns
• Maximum Fall Time: 50 ns
• Package / Case: CS-6
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

// Synchronize one integration cycle
// Synchronize N number of SYNC IN pulses
The LUMENOLOGY r Company
A synchronization input (SYNC IN) is supported to precisely start/stop sensor integration and synchronize with
the light source. The TIMING Register (01h) provides two synchronization modes of operation. The first mode
of operation synchronizes the SYNC IN pin for one integration cycle as specified in the Timing Register (01h).
When the rising edge of the signal is detected, the TCS3404/14 begins integration. The second mode
accumulates a specified number of SYNC IN pulses (see Timing Register) in which the minimum pulse width
is 50 μs. A pulse counter is used to count the rising and falling edges of the pulse(s) and precisely integrate the
light level when the SYNC IN pulse is high.
The following pseudo code illustrates a procedure for reading the TCS3404/14 device using the synchronization
feature:
// See ”Basic Operation” to power−on and start device
// See ”Configuring the Timing Register” to setup environment
Address = 0x39
Command = 0x81
Data = 0x21
//External SYNC IN pulse initiates 100ms integration
Sleep (100)
// See ”Basic Operation” to read Data Registers using Byte or Word Protocol
// See ”Basic Operation” to power−on and start device
// See ”Configuring the Timing Register” to setup environment
Address = 0x39
Command = 0x81
Data = 0x30
//External SYNC IN pulse synchronizes integration
// See ”Basic Operation” to read Data Registers using Byte or Word Protocol
APPLICATION INFORMATION: SOFTWARE
r
www.taosinc.com
//Slave addr − also 0x29 or 0x49
//Set Command bit and address Timing Register
//Sync one 100ms integration period
//Slave addr − also 0x29 or 0x49
//Set Command bit and address Timing Register
//Integrate one SYNC IN pulse
DIGITAL COLOR LIGHT SENSORS
r
TCS3404CS, TCS3414CS
TAOS068 − FEBRUARY 2009
Copyright E 2009, TAOS Inc.
29