STMPE321QTR STMicroelectronics, STMPE321QTR Datasheet - Page 26

• Manufacturer Part Number: STMPE321QTR
• Description: IC CTLR TOUCH KEY 3CH 12-QFN
• Manufacturer: STMicroelectronics
• Series: S-Touch™r
• Type: Capacitiver

Specifications of STMPE321QTR

• Number Of Inputs/keys: 3 Key
• Resolution (bits): 8 b
• Data Interface: I²C
• Data Rate/sampling Rate (sps, Bps): 100k
• Voltage - Supply: 1.65 V ~ 1.95 V
• Mounting Type: Surface Mount
• Package / Case: 12-QFN
• Voltage Supply Source: Single Supply
• Resolution: 7 bit to 10 bit
• Interface Type: I2C
• Supply Voltage (max): 1.95 V
• Supply Voltage (min): 1.65 V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Sampling Rate (per Second): -
• Lead Free Status / Rohs Status: Details
• Other names: 497-8985-2

Capacitive touch module registers
CAL_INTERVAL
Address:
Type:
Reset:
Description:
INTEGRATION TIME
Address:
Type:
Reset:
Description:
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7
7
[7:0] CALIBRATION INTERVAL:
[7:0] Integration time in AFS mode
6
6
0x22
R/W
0x30
Calibration interval
Interval between calibration = calibration interval [7:0] * sensor clock period * 50
Range: 4 ms - 16 s
0x23
R/W
0x0F
Integration time
Total period of integration = sensor clock period * integration time [7:0]
78 µs - 320 ms
5
5
4
4
INTEGRATION_TIME[7:0]
Doc ID 15791 Rev 3
CAL_INTERVAL
3
3
2
2
1
1
Calibration interval
Integration time
STMPE321
0
0