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参数资料
| 型号： | MAX11041ETC+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/17页 |
| 文件大小： | 0K |
| 描述： | IC REMOTE CTRLR WIRED 12-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 应用： | PDA，便携式音频/视频，智能电话 |
| 接口： | I²C |
| 电源电压： | 1.6 V ~ 3.6 V |
| 封装/外壳： | 12-WQFN 裸露焊盘 |
| 供应商设备封装： | 12-TQFN-EP（4x4） |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
MAX11041
Keypress Detection and Debounce
At power-up, the MAX11041 begins to monitor the
SENSE input for keypresses. When the MAX11041
detects a keypress at SENSE, it attempts to debounce
the SENSE input. After successful debouncing of the
input, the corresponding keypress result is inserted into
the FIFO. In addition, INT goes low to signal a keypress
to the P.
Keypress FIFO and Time Duration
After detecting and debouncing a key, the decoded
key is stored in one byte of the 8-word FIFO. A 7-bit
internal timer starts counting the duration of the key-
press (one count = 32ms) and the result is stored after
each increment in another byte of the 8-word FIFO. The
8th bit in the time duration byte is an overflow bit that
is set when the count reaches 128. After the count
reaches 128, the 7-bit timer rolls over to 0 and contin-
ues to count while the 8th bit becomes set and stays
set until the associated FIFO entry is cleared. For key-
press durations longer than 8.16s, see the
Extended
Keypresses section.
When the device detects another change in resistance
at SENSE (either by key release or another keypress),
the count resets and the FIFO begin recording the next
keypress/duration. This allows the 8-word FIFO to store
time duration and key-type information for up to four
keypresses and releases. When the FIFO is full and a
key is pressed, the oldest keypress information in the
FIFO is written over. Writing to the power-down bit (bit
6) in the control register or bringing SHDN low clears
the FIFO to its power-on-reset (POR) state.
Wired Remote Controller
8
_______________________________________________________________________________________
1. DEBOUNCED KEYPRESS STORED IN FIFO AND INT GOES LOW, DURATION
TIMER STARTS.
2. PROCESSOR READS FIFO AND INT GOES HIGH. KEY TYPE AND CURRENT
KEYPRESS DURATION TIME SENT. FIFO IS NOT CLEARED.
3. KEYPRESS RELEASES AND INT GOES LOW. KEY TYPE AND FINAL KEYPRESS
DURATION TIME STORED IN FIFO.
4. PROCESSOR READS THE FIFO AND INT GOES HIGH. KEYPRESS INFORMATION
STORED IN FIFO FROM STEP 3 IS CLEARED.
KEY TYPE
TIME
VINT
Figure 3. Reading the FIFO While the Key is Still Pressed
TIME
VINT
1. DEBOUNCED KEYPRESS STORED IN FIFO AND INT GOES LOW.
DURATION TIMER STARTS.
2. KEYPRESS RELEASES. KEY TYPE AND KEYPRESS TIME
DURATION INFORMATION STORED IN FIFO.
3. PROCESSOR READS FIFO COMPLETELY AND INT GOES HIGH.
PREVIOUS KEYPRESS INFORMATION CLEARED.
KEY TYPE
Figure 4. Reading the FIFO After the Key is Released
BIT NAMES
CHIP ID
I7
I6
I5
I4
I3
I2
I1
I0
MAX11041
0
0000
000
Table 3. Chip ID Data Format
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX11041ETC+ | 功能描述:接口 - 专用 Wired Remote Controller RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX11041ETC+T | 功能描述:接口 - 专用 Wired Remote Controller RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX11041ETC-T | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| MAX11041有线遥控器 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| MAX11042 | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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