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參數(shù)資料
| 型號： | MAX1234ETI+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 14/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CNTRLR TOUCH 28-TQFN |
| 其它有關(guān)文件： | Automotive Product Guide |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 60 |
| 類型： | 電阻 |
| 觸摸面板接口： | 4 線 |
| 輸入數(shù)/鍵： | 1，4 x 4 小鍵盤 |
| 分辨率（位）： | 8，10，12 b |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 數(shù)據(jù)速率/采樣率 (SPS，BPS)： | 50k |
| 電壓基準： | 內(nèi)部 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-TQFN 裸露焊盤 |
| 供應商設(shè)備封裝： | 28-TQFN-EP（5x5） |
| 包裝： | 管件 |
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MAX1233/MAX1234
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
______________________________________________________________________________________
21
Bits 14-15: Pen Interrupt Status and
ADC Status Bits
These bits are used to control or monitor ADC scans.
Bits 10-13: ADC Scan Select
These bits control which input to convert and which con-
verter mode is used. The bits are identical regardless of a
read or write. See Table 7 for details about using these bits.
Bits 8-9: ADC Resolution Control
These bits specify the ADC resolution and are identical
regardless of read or write. Table 8 shows how to use
these bits to set the resolution.
Bits 6-7: Converter Averaging Control
These bits specify the number of data averages the
converter performs. Table 9 shows how to program for
the desired number of averages. When averaging is
used, ADSTS and
BUSY indicate the converter is busy
until all conversions needed for the averaging finish.
These bits are identical, regardless of read or write.
Bits 4-5: ADC Conversion Rate Control
These bits specify the internal conversion rate, which
the ADC uses to perform a single conversion, as shown
in Table 10. Lowering the conversion rate also reduces
power consumption. These bits are identical, regard-
less of read or write.
BIT
NAME
DESCRIPTION
15 (MSB)
PENSTS
Read: pen interrupt status; Write: sets interrupt initiated touch-screen scans
14
ADSTS
Read: ADC status; Write: stops ADC
13
A/D3
Selects ADC scan functions
12
A/D2
Selects ADC scan functions
11
A/D1
Selects ADC scan functions
10
A/D0
Selects ADC scan functions
9
RES1
Controls ADC resolution
8
RES0
Controls ADC resolution
7
AVG1
Controls ADC result averaging
6
AVG0
Controls ADC result averaging
5
CNR1
Controls ADC conversion rate
4
CNR0
Controls ADC conversion rate
3
ST2
Controls touch-screen settling wait time
2
ST1
Controls touch-screen settling wait time
1
ST0
Controls touch-screen settling wait time
0 (LSB)
RFV
Chooses 1.0V or 2.5V reference
Table 5. ADC Control Register Bit Descriptions (Write 0x0040/Read 0x8040)
PENSTS
ADSTS
READ FUNCTION
WRITE FUNCTION
00
No screen touch detected;
scan or conversion in progress
Performs one scan and waits to detect a screen touch. Upon
detection, issues an interrupt and waits until told to scan by the
host controller.
10
Screen touch detected;
scan or conversion in progress
Stops any ongoing scan and waits to detect a screen touch. Upon
detection, issues an interrupt and performs a scan.
01
No screen touch detected;
data available
Stops any ongoing scan and waits to detect a screen touch. Upon
detection, issues an interrupt and waits until told to scan by the
host controller.
11
Screen touch detected;
data available
Stops any ongoing scan and powers down the screen touch
detection circuit. No screen touches are detected in this mode.
Table 6. ADSTS Bit Operation
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1234ETI+ | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4Ch uWire QSPI/SPI Touch Interface 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 |
| MAX1234ETI+T | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 4Ch uWire QSPI/SPI Touch Interface 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 |
| MAX1234EVC16 | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX1233/34 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX1234EVKIT | 制造商:Maxim Integrated Products 功能描述:+15KV ESD-PROTECTED TOUCH-SCREEN CO - Rail/Tube |
| MAX1236EUA | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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