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STMPE1801BJR датащи(PDF) 32 Page - STMicroelectronics

номер детали STMPE1801BJR
подробное описание детали  Xpander Logic™ 18-bit enhanced port expander with keypad controller
PDF  60 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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STMPE1801BJR датащи(HTML) 32 Page - STMicroelectronics

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GPIO controller
STMPE1801
32/60
Doc ID 17884 Rev 3
10
GPIO controller
A total of 18 GPIOs are available in the STMPE1801 port expander device. Most of the
GPIOs are sharing physical pins with 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 the
power consumption.
Table 13.
GPIO controller registers
Address
Register name
Description
Auto-increment
(during sequential
R/W)
10
GPIO_SET_LOW
GPIO set pin state register
Yes
11
GPIO_SET_MID
Yes
12
GPIO_SET_HIGH
Yes
13
GPIO_CLR_LOW
GPIO clear pin state register
Yes
14
GPIO_CLR_MID
Yes
15
GPIO_CLR_HIGH
Yes
16
GPIO_MP_LOW
GPIO monitor pin state register
Yes
17
GPIO_MP_MID
Yes
18
GPIO_MP_HIGH
Yes
19
GPIO_SET_DIR_LOW
GPIO set pin direction register
Yes
1A
GPIO_SET_DIR_MID
Yes
1B
GPIO_SET_DIR_HIGH
Yes
1C
GPIO_RE_LOW
GPIO rising edge register
Yes
1D
GPIO_RE_MID
Yes
1E
GPIO_RE_HIGH
Yes
1F
GPIO_FE_LOW
GPIO falling edge register
Yes
20
GPIO_FE_MID
Yes
21
GPIO_FE_HIGH
Yes
22
GPIO_PULL_UP_LOW
GPIO pull up register
Yes
23
GPIO_PULL_UP_MID
Yes
24
GPIO_PULL_UP_HIGH
Yes



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