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STMPE610 датащи(PDF) 41 Page - STMicroelectronics

номер детали STMPE610
подробное описание детали  S-Touch?? advanced touchscreen controller with 6-bit port expander
PDF  56 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STMPE610 датащи(HTML) 41 Page - STMicroelectronics

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STMPE610
GPIO controller
Doc ID 15432 Rev 3
41/56
12
GPIO controller
A total of 6 GPIOs are available in the STMPE610 port expander device. Most of the GPIOs
share physical pins with some alternate functions. The GPIO controller contains the
registers that allow the host system to configure each of the pins into either a GPIO, or one
of the alternate functions. Unused GPIOs should be configured as outputs to minimize
power consumption.
A group of registers are used to control the exact function of each of the 6 GPIOs. The
registers and their respective addresses are listed in the following table.
All GPIO registers are named as GPIO-x, where x represents the functional group.
Table 17.
GPIO control registers
Address
Register name
Size
(bit)
Function
0x10
GPIO_SET_PIN
8
Set pin register
0x11
GPIO_CLR_PIN
8
Clear pin state
0x12
GPIO_MP_STA
8
Monitor pin state
0x13
GPIO_DIR
8
Set pin direction
0x14
GPIO_ED
8
Edge detect status
0x15
GPIO_RE
8
Rising edge detection
enable
0x16
GPIO_FE
8
Falling edge detection
enable
0x17
GPIO_ALT_FUNCT
8
Alternate function register
76
543
2
1
0
GPIO-7
GPIO-6
GPIO-5
GPIO-4
GPIO-3
GPIO-2
RESERVED
RESERVED



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