STMPE821QTR STMicroelectronics, STMPE821QTR Datasheet - Page 14
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STMPE821QTR
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STMPE821QTR
Manufacturer:
STM
Quantity:
1 261
Register map and function description
4
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Register map and function description
This section lists and describes the registers of the STMPE821 device, starting with a
register map and then provides detailed descriptions of register types.
Table 5.
Address
0x30 -
0x0A
0x0B
0x0C
0x0D
0x0E
0x2A
0x00
0x01
0x02
0x03
0x04
0x08
0x09
0x10
0x12
0x14
0x16
0x18
0x20
0x21
0x22
0x23
0x25
0x26
0x27
0x28
0x29
0x37
CHIP_ID_0
CHIP_ID_1
ID_VER
SYS_CFG_1
SYS_CFG_2
INT_CTRL
INT_EN
INT_STA
GPIO__INT_EN_lsb
GPIO__INT_EN_msb
GPIO_INT_STA_lsb
GPIO_INT_STA_msb
GPIO_MR
GPIO_SET
GPIO_DIR
GPIO_FUNCT
TOUCH_FIFO
FEATURE_SEL
ETC_WAIT
CAL_INTERVAL
INTEGRATION_
TIME
CTRL
INT_MASK
INT_CLR
FILTER_PERIOD
FILTER_THRESHOL
D
REF_DLY
TVR
Register summary map table
Register name
Bit
64
8
8
8
8
8
8
8
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/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
Reset value
0xEF
0x08
0x21
0x0F
0x00
0x01
0x01
0x01
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x04
0x27
0x30
0x0F
0x00
0x08
0x00
0x00
0x00
0x00
0x08
Device identification
Device identification
Revision number
System configuration 1
System configuration 2
Interrupt control register
Interrupt enable register
Interrupt status register
GPIO interrupt enable register
GPIO interrupt enable register
GPIO interrupt status register
GPIO interrupt status register
GPIO monitor pin
GPIO set pin state register
GPIO set pin direction register
GPIO function register
Fifo access for touch data buffer
Feature selection
Wait time
Calibration interval
Integration time
Control
Interrupt mask
Interrupt clear
Filter period
Filter threshold
Reference delay
Touch variance setting
Function
STMPE821