STMPE321 ST Microelectronics, STMPE321 Datasheet - Page 3

• Manufacturer Part Number: STMPE321
• Description: 3-channel capacitive touch key controller
• Manufacturer: ST Microelectronics

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STMPE321
1
1.1
STMPE321 functional overview
The STMPE321 consists of the following blocks:
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STMPE321 block diagram
Figure 1.
GPIO controller
Impedance sensor
Touch key controller
I
2
C interface
RST
SCLK
SDA
INT
Functional block diagram
interface
GND
Host
Doc ID 15791 Rev 1
controller
VCC
IO
Impedance
Touch key
controller
sensor
STMPE321 functional overview
ARef
Touch 0-2
GPIO 0-2
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