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參數(shù)資料
| 型號： | MAX11800EVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 19/59頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVAL TOUCH SCREEN |
| 其它有關文件： | Automotive Product Guide |
| 標準包裝： | 1 |
| 主要目的： | 接口，觸摸屏控制器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MAX11800 |
| 主要屬性： | 圖形用戶界面（GUI） |
| 次要屬性： | USB，SPI 接口 |
| 已供物品： | 板 |
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MAX11800–MAX11803
Low-Power, Ultra-Small Resistive Touch-Screen
Controllers with I2C/SPI Interface
26
______________________________________________________________________________________
Procedure: The EINT mode reduces TIRQ activity.
During EINT, the MAX11800–MAX11803 idle in a TDM.
TIRQ goes low when a new touch is detected on the
panel. TIRQ stays low for a fixed duration as specified
in the configuration register 0x01, indicating to the AP
that a touch is present and measurements are required.
The AP requests specific panel setups and measure-
ments through the serial interface using panel setup
and conversion commands after TIRQ goes low. Once
a measurement is complete (with CONT = 0), the
MAX11800–MAX11803 check for the continued pres-
ence of a touch and tag the data accordingly. See
Table 7. The duration of this operation is programma-
ble, specified in the
Touch-Detect Pullup Timing
Configuration Register (0x07) section. After the data is
tagged, it is available for readback through the serial
interface. The MAX11800–MAX11803 do not return to
TDM when the panel touch is still present (ETAG = 00,
01), but remain in an LPM awaiting further measure-
ment commands. The devices return to TDM when the
panel touch is no longer present (ETAG = 10) and
return control of the TIRQ interrupt to the TDM circuitry
to await the next touch event.
After a touch is indicated, the AP must continue to issue
conversion commands until the touch is removed, alert-
ing the AP when the panel is released (by ETAG = 10).
The MAX11800–MAX11803 return to TDM and observe
the start of the next touch event. Panel commands
issued with CONT = 1 are not capable of fulfilling this
requirement.
The EINT mode provides the least interrupt activity and
the lowest power consumption. Use EINT mode for
general touch-screen applications and applications
requiring high resolution in space and time. When the
TIRQ bus is shared with other functions, poll the gener-
al status register (0x00) to detect the presence of an
interrupt. See Figure 10.
MEASUREMENT
MTAG[3:2]
X00
Y01
Z1
10
Z2
11
EVENT
ETAG[1:0]
Initial touch (data valid)
00
Midpress (data valid)
01
Release/no touch present
(data invalid)
10
Measurement in progress
(data invalid)
11
Table 7. Measurement and Event Tags
(Edge Interrupt Mode)
DCM SCAN
ETAG = 00
DCM SCAN
ETAG = 00
DCM SCAN
ETAG = 00
TDM
TIRQ
PANEL
TOUCH
BEGINNING OF TOUCH EVENT
END OF TOUCH EVENT
tAP
tSD
READBACK OPERATIONS ARE NOT SHOWN, BUT ARE EXECUTED DURING TDM PERIODS.
SCAN INTERVAL (tAP) IS CONTROLLED BY THE AP AND THE INITIATION OF DM SCAN EVENTS.
SCAN DURATION (tSD) IS A FUNCTION OF THE SCAN TYPE AND CONFIGURATION SETTINGS.
DCM = DIRECT CONVERSION MODE
INITIATED AND CONTROLLED BY
THE AP
Figure 9. Continuous Interrupt Mode (Direct Conversion Mode)
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| MAX11800EVKIT+ | 功能描述:顯示開發(fā)工具 MAX11800 Eval Kit RoHS:否 制造商:4D Systems 產(chǎn)品:4Display Shields 工具用于評估:?OLED-160-G1, ?OLED-160-G2 接口類型:Serial 工作電源電壓:5 V |
| MAX11800EWC+T | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 SPI 4Ch Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| MAX11800GTC/V+ | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 SPI 4Ch Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| MAX11800GTC/V+T | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 SPI 4Ch Touch Screen Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)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 |
| MAX11800TEVS+ | 功能描述:顯示開發(fā)工具 SPI 4Ch Touch Screen Controller RoHS:否 制造商:4D Systems 產(chǎn)品:4Display Shields 工具用于評估:?OLED-160-G1, ?OLED-160-G2 接口類型:Serial 工作電源電壓:5 V |
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