STMPE24M31QTR STMicroelectronics, STMPE24M31QTR Datasheet - Page 9

• 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

STMPE16M31, STMPE24M31
1.1
1.2
Power scheme
The STMPE24M31/16M31 is powered by a 2.7- 5.5 V supply. An internal voltage regulator
regulates this supply into 1.8 V for core operation. It is recommended to connect a 1 µF
capacitor at V
driving is required on the GPIO, the V
Figure 5.
Power states
The STMPE24M31/16M31 operate in 3 states.
device in each of the power states.
Table 4.
1. When the ratio engine is enabled, device transitions to active state whenever a touch on the slider/wheel is
Capacitive sensing
detected, even if it was previously in sleep mode.
GPIO hotkey
Ratio engine
PWM
I
2
C
Power supply scheme
Functions available in each power state
CC
pin for filtering purpose. The V
Hibernate
Doc ID 16174 Rev 2
Yes
Yes
No
No
No
IO
should be at least 3.3 V.
Table 4
IO
powers all GPIOs directly, if any LED
Sleep
No
Slow
Yes
Yes
Yes
illustrates the capability of the
(1)
Pin assignment
Active
Yes
Yes
Yes
Yes
Yes
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