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STMPE2403 Datasheet(PDF) 3 Page - STMicroelectronics

Part # STMPE2403
Description  24-bit Enhanced port expander with Keypad and PWM controller Xpander logic
PDF  63 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE2403 Datasheet(HTML) 3 Page - STMicroelectronics

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STMPE2403
Contents
3/63
7
System controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.1
Identification register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.2
System control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.3
System control register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4
States of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.5
Autosleep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.6
Keypress detect in the hibernate mode . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8
Clocking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.1
Clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.2
Power mode programming sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9
Interrupt system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.1
Register map of interrupt system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.2
Interrupt Control Register (ICR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.3
Interrupt Enable Mask Register (IER) . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.4
Interrupt Status Register (ISR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.5
Interrupt Enable GPIO Mask Register (IEGPIOR) . . . . . . . . . . . . . . . . . . 29
9.6
Interrupt Status GPIO Register (ISGPIOR) . . . . . . . . . . . . . . . . . . . . . . . 30
9.7
Programming sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
10
GPIO controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10.1
GPIO control registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10.2
GPIO Alternate Function Register (GPAFR) . . . . . . . . . . . . . . . . . . . . . . 35
10.3
Hot key feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.3.1
Programming sequence for Hot Key . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.3.2
Minimum pulse width . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
10.4
MUX Control Register (MCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
10.5
STMPE2401 Pin Compatibility Register (COMPAT2401) . . . . . . . . . . . . . 39



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