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參數資料
| 型號： | STMPE2401TBR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 24 I/O, PIA-GENERAL PURPOSE, PBGA36 |
| 封裝： | LEAD FREE, TFBGA-36 |
| 文件頁數： | 26/55頁 |
| 文件大?。?/td> | 959K |
| 代理商： | STMPE2401TBR |
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GPIO controller
STMPE2401
32/55
10.3
Hot key feature
A GPIO is known as ‘Hot Key’ when it is configured to trigger an interruption to the host
whenever the GPIO input is being asserted. This feature is applicable in Operational mode
(RC clock is present) as well as Sleep mode (32kHz clock is present).
10.3.1
Programming sequence for hot key
1.
Configures the GPIO pin into GPIO mode by setting the corresponding bits in the
GPAFR.
2.
Configures the GPIO pin into input direction by setting the corresponding bit in GPDR.
3.
Set the GPRER and GPFER to the desired values to enable the rising edge or falling
edge detection.
4.
Configures and enables the interrupt controller to allow the interruption to the host.
5.
Now, the GPIO Expander may be put into Sleep mode if it is desired.
6.
Upon any Hot Key being asserted, the device will wake-up and issue an interrupt to the
host.
Below are the conditions to be fulfilled in order to configure a Hot Key:
1.
The pin is configured into GPIO mode and as input pin.
2.
The global interrupt mask bit is enabled.
3.
The corresponding GPIO interrupt mask bit is enabled.
10.3.2
Minimum pulse width
The minimum pulse width of the assertion of the Hot Key must be at least 62.5us. Any pulse
width less than the stated value may not be registered.
Table 30. Bit description
Bits
Name
Description
23:0
AF[x]
GPIO Pin ‘x’ Alternate Function Select (where x = 11 to 0).
‘00’ – The corresponding GPIO pin (GPIO[x]) is configured to Primary
Function.
‘01’ – The corresponding GPIO pin (GPIO[x]) is configured to Alternate
Function 1.
‘10’ – The corresponding GPIO pin (GPIO[x]) is configured to Alternate
Function 2.
‘11’ – The corresponding GPIO pin (GPIO[x]) is configured to Alternate
Function 3.
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相關代理商/技術參數 |
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|---|---|
| STMPE2403 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:24-bit Enhanced port expander with Keypad and PWM controller Xpander logic |
| STMPE2403TBR | 功能描述:接口 - 專用 24-bit Enhanced RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| STMPE24M31QTR | 功能描述:電容觸摸傳感器 S-Touch 24 Cap Sens 15fF 512 Steps 30pF RoHS:否 制造商:Microchip Technology 電源電壓: 通道數量: 封裝 / 箱體: 尺寸: 溫度范圍: |
| STMPE321 | 制造商:STMicroelectronics 功能描述:3-channel touchkey controller |
| STMPE321QTR | 功能描述:觸摸屏轉換器和控制器 3-channel CAP Touch Key Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數據速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
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