stmpe1801 STMicroelectronics, stmpe1801 Datasheet - Page 7

• Manufacturer Part Number: stmpe1801
• Description: Xpander Logic? 18-bit Enhanced Port Expander With Keypad Controller
• Manufacturer: STMicroelectronics

STMPE1801
Table 3.
The default function is always GPIO. As soon as the key scanning is enabled through the
keypad registers, the function is then switched to the key function and then any configuration
made in the GPIO registers is ignored.
GPIO13
GPIO14
GPIO15
GPIO16
GPIO17
Name
GPIO pin function
Doc ID 17884 Rev 3
Primary function
GPIO
GPIO
GPIO
GPIO
GPIO
Alternate function
Keypad column 5
Keypad column 6
Keypad column 7
Keypad column 8
Keypad column 9
Pin settings
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