STMPE24M31QTR STMicroelectronics, STMPE24M31QTR Datasheet - Page 44

• Manufacturer Part Number: STMPE24M31QTR
• Description: IC SENSOR S-TOUCH 24CH 40QFN
• Manufacturer: STMicroelectronics
• Series: S-Touch™r
• Type: Capacitiver

Specifications of STMPE24M31QTR

• Number Of Inputs/keys: 24 Key
• Data Interface: I²C
• Data Rate/sampling Rate (sps, Bps): 100k, 400k
• Voltage Reference: External
• Voltage - Supply: 1.65 V ~ 1.95 V
• Current - Supply: 900µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 40-VQFN
• Output Type: Logic
• Interface: I²C
• Input Type: Logic
• Supply Voltage: 1.8 V
• Number Of Channels: 24
• Dimensions: 5 mm L x 5 mm W x 0.85 mm H
• Temperature Range: - 40 C to + 85 C
• Termination Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10380-2

Basic PWM programming
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Basic PWM programming
The PWM controllers are capable of generating the following brightness patterns:
Figure 10. Pulses with programmable brightness, ON/OFF period and repetition
The registers need to be programmed for this sequence:
Figure 11. Ramps with programmable brightness, ON/OFF period and repetition
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–
–
–
–
On period = Period 0[1:0] * Time Unit [3:0]
Off period = Period 1[1:0] * Time Unit [3:0]
Duty cycle during on period = Brightness [7:4]
Number of cycles = Repetition [3:0]
Ramp-mode is disabled
Doc ID 16174 Rev 2
STMPE16M31, STMPE24M31