B6TS-08NF Omron, B6TS-08NF Datasheet - Page 12

• Manufacturer Part Number: B6TS-08NF
• Description: Capacitance Touch Sensors Sensing IC
• Manufacturer: Omron
• Series: -r
• Type: Capacitiver

Specifications of B6TS-08NF

• Supply Voltage: - 0.3 V to 6.5 V
• Number Of Channels: 8
• Dimensions: 9 mm L x 9 mm W x 1.7 mm H
• Output Voltage: -0.3 V to Vsupply + 0.3 V
• Power Dissipation: 300 mW
• Temperature Range: - 20 C to + 85 C
• Termination Style: SMD/SMT
• Sensitivity: -
• Response Time: -
• Interface: SPI
• Channel Inputs: 8 Key
• Voltage - Supply: 4.5 V ~ 5.5 V
• Actuator Type: -
• Package / Case: 32-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

It is possible to read out measured values and set the operation mode by sending/receiving data to/from this chip through
serial communication.
Serial communication is performed with the three-wire SPI using SCS (chip select), SCK (transfer clock), and SD (data
transmission and reception: host -> B6TS, B6TS -> host).
5. Serial communication
5.1
The SPI communication method works as follows:
(Refer to “8. Electrical specifications” for specific communication timing, etc.)
This chip sends/receives data using 4 bytes, consisting of a command byte, dummy bytes, and 2 data bytes.
If data communication is performed during normal measurement mode, the measurement operation stops while the
data is communicated.
Measurement will restart after communication completes (when measurement has been interrupted, values from the
last measurement are read).
Read (Data direction: B6T Host)
*If SCS is disabled while data is being transmitted or received, data transmitted or received by B6T up to that
*I/O of the SD pin toggles according to the data direction. Be sure to change the host pin I/O according to the SD
Write (Data direction: Host B6T)
moment is lost.
pin direction.
SPI communication
・ Operation in SPI slave mode
・ SCK (transfer clock) is set to high during idling. The data is latched at the rising edge of the clock.
・ The data (SD) is in MSB first format.
Command: 1 byte (MSB 1 bit is used for the read/write flag.)
Dummy data: 1 byte (0x00 or 0x80 is set when accessing to commands 0x00 - 0x7F or 0x80 - 0xFF respectively.)
Data: 2 bytes
Supply SCS (chip select) and SCK (transfer clock) from an external source.
Figure 6 . In case of “Read command”
Figure 7 . In case of “Write command”
Dummy data (8 bits)
Dummy data (8 bits)
12
Data (upper 8 bits)
Data (upper 8 bits)
Data (lower 8 bits)
Data (lower 8 bits)