參數(shù)資料
型號(hào)： STMPE801MTR
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8 I/O, PIA-GENERAL PURPOSE, PDSO16
封裝： SOP-16
文件頁(yè)數(shù)： 10/26頁(yè)
文件大?。?/td> 399K
代理商： STMPE801MTR
Interrupt, power supply & reset
STMPE801
18/26
All GPIO registers are named as GPxx, where
Xxx represents the functional group
The function of each bit is shown in the following table:
On power-up reset, all GPIO are set as input.
8.4
Power supply
STMPE801 GPIO operates from a separate supply pin (VIO). This dedicated supply pin
provides a level-shifting feature to the STMPE801.
GPIO will remain valid until VIO is removed.
The host system may choose to turn off VCC supply while keeping VIO supplied.
However it is not allowed to turn off supply to VIO, while keeping the Vcc supplied.
8.5
Reset
STMPE801 is equipped with an internal POR circuit that holds the device in reset state, until
the VIO supply input is valid. The internal POR is tied to the Vio supply pin.
The reset pin allows the host to reset the STMPE801 directly. Minimum pulse width of reset
signal is 100
s.
During the period when reset pin is asserted, all GPIO default to inputs.
Bit
7
65
43
2
1
0
GPxx
IO-7
IO-6
IO-5
IO-4
IO-3
IO-2
IO-1
IO-0
Table 16. Pin function
Register Name
Function
GPIO Monitor Pin State
Reading this bit yields the current state of the bit. Writing has no effect.
GPIO Set Pin State
Writing ‘1’ to this bit causes the corresponding GPIO to go to ‘1’ state.
Writing ‘0’ to this bit causes the corresponding GPIO to go to ‘0’ state.
GPIO Set Pin Direction
‘0’ sets the corresponding GPIO to input state, and ‘1’ sets it to output
state. All bits are ‘0’ on reset.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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