STMPE821QTR STMicroelectronics, STMPE821QTR Datasheet - Page 15

• Manufacturer Part Number: STMPE821QTR
• Description: IC CTLR TOUCH KEY 8CH CAP 16-QFN
• Manufacturer: STMicroelectronics
• Type: Capacitiver

Specifications of STMPE821QTR

• Number Of Inputs/keys: 8 Key
• Data Interface: I²C
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Voltage Supply Source: Single Supply
• Resolution: 7 bit to 10 bit
• Interface Type: I2C
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Number Of Channels: 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sampling Rate (per Second): -
• Resolution (bits): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-8826-2

STMPE821
Table 5.
Address
0x50 -
0x60 -
0x70 -
0x80 -
0xBA
0xBC
0xBD
0xBE
0xA0
0xA1
0xB0
0xB1
0xB2
0xB4
0xB5
0xB6
0xB8
0xB9
0x40
0x57
0x67
0x77
0x87
0x92
EVR
STRENGTH_THRES
[0-7]
STRENGTH [0-7]
CAL_IMPEDANCE
[0-7]
IMPEDANCE [0-7]
INT_PENDING
PWM_OFF_OUTPUT
MASTER_EN
PWM0_SET
PWM0_CTRL
PWM0_RAMP_RATE
PWM1_SET
PWM1_CTRL
PWM1_RAMP_RATE
PWM2_SET
PWM2_CTRL
PWM2_RAMP_RATE
PWM3_SET
PWM3_CTRL
PWM3_RAMP_RATE
Register summary map table (continued)
Register name
Doc ID 14478 Rev 5
Bit
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
Reset value
Register map and function description
0x04
0x01
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Environmental variance
Setting of strength threshold for
each channel
Strength
Calibrated impedance
Impedance
Status of GINT interrupt
sources
PWM group control
Master enable
PWM 0 setup
PWM 0 control
PWM 0 ramp rate
PWM 1 setup
PWM 1 control
PWM 1 ramp rate
PWM 2 setup
PWM 2 control
PWM 2 ramp rate
PWM 3 setup
PWM 3 control
PWM 3 ramp rate
Function
15/50