STMPE821QTR STMicroelectronics, STMPE821QTR Datasheet - Page 6

• 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 functional overview
1.2
6/50
Pin assignment and function
Figure 2.
Table 2.
Pin number
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
STMPE821 pin assignment (top view)
Pin assignments and function
GPIO_2/Touch_2
GPIO_1/Touch_1
GPIO_0/Touch_0
GPIO_7/Touch_7
GPIO_6/Touch_6
GPIO_5/Touch_5
GPIO_4/Touch_4
GPIO_3/Touch_3
Pin name
ARef
GND
RST
SDA
SCL
V
INT
V
CC
IO
16
15
13
14
Doc ID 14478 Rev 5
12
1
GPIO 2
GPIO 1
GPIO 0
Reference capacitor for touch sensor
RESET (active low).
Pull to V
I
I
INT output (open drain)
GND
Supply voltage for I
Supply voltage for GPIO and internal regulator
GPIO 7
GPIO 6
GPIO 5
GPIO 4
GPIO 3
2
2
C data
C clock
11
STMPE821
2
CC
10
3
for normal operation, pull to GND to reset.
9
4
2
C block
Description
8
7
6
5
STMPE821
CS00045