Key facts
- Brand
- STMicroelectronics
- Model
- STMPE2401
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-06
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ST AN2422 handbook
The STMPE2401 is a GPIO port expander designed to interface with digital ASICs via a two-line bidirectional I2C bus. It provides 24 configurable I/Os and includes integrated intelligence for advanced features such as keypad scanning, PWM control, and rotator dial control. The device is optimized for low power consumption and is suitable for applications in mobile communications, game consoles, and embedded systems.
Read onlineSTMicroelectronics STMPE2401 specifications
| Number of GPIOs | 24 |
|---|---|
| Operating voltage | 1.8V |
| Package type | TFBGA - 36 pins |
| I2C Speed Modes | Standard (up to 100 kbps) and Fast (up to 400 kbps) |
| Addressing mode | 7-bit |
Source: ST AN2422 handbook
All STMicroelectronics STMPE2401 documents by type
How to use the product for one specific task, with worked examples.
Questions answered in these manuals
What is the operating voltage of the STMPE2401?
The device functions on a 1.8V supply.
From: ST AN2422 handbook
What is the maximum size of the keypad matrix supported?
The STMPE2401 supports a maximum 12x8 key matrix.
From: STMicroelectronics STMPE2401 Keypad Controller Application Note AN2423
Can the keypad controller be disabled?
Yes, power consumption can be reduced by setting the 'Enable_KPC' bit in the SYSCON register to zero.
From: STMicroelectronics STMPE2401 Keypad Controller Application Note AN2423