STMPE321QTR STMicroelectronics, STMPE321QTR Datasheet - Page 27

• 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

STMPE321
CTRL
Address:
Type:
Reset:
Description:
7
[7:4] RESERVED
[3] F2A:
[2] HDC_U:
[1] HDC_C:
[0] HOLD:
6
RESERVED
0x25
R/W
0x00
Control
Write '1' to force device to remain in ACTIVE state at all times
Write '1' to perform unconditional host driven calibration
Cleared to '0' when calibration is completed
Only applicable HOLD is '1'
Write '1' to perform conditional host driven calibration
Calibration is performed if and only if no touch is detected
Cleared to '0' when calibration is completed
Only applicable HOLD is '1'
'0' to enable ETC
'1' to disable ETC
5
4
Doc ID 15791 Rev 3
F2A
3
HDC_U
2
Capacitive touch module registers
HDC_C
1
HOLD
Control
0
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