- 您现在的位置：买卖IC网 > PDF目录383314 > MAX1234EGI (MAXIM INTEGRATED PRODUCTS INC) 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller PDF资料下载
参数资料
| 型号： | MAX1234EGI |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, QCC28 |
| 封装： | 5 X 5 MM, 0.80 MM HEIGHT, QFN-28 |
| 文件页数： | 23/44页 |
| 文件大小： | 706K |
| 代理商： | MAX1234EGI |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页
M
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
______________________________________________________________________________________
23
Bits 1-3: Touch-Screen Settling Time Control
These bits specify the time delay from pen-touch detec-
tion to a conversion start. This allows the selection of the
appropriate settling time for the touch screen being used.
Table 11
shows how to set the settling time. These bits
are identical, regardless of read or write.
Bit 0: ADC Internal Reference Voltage Control
This bit selects the ADC internal reference voltage,
either +1.0V or +2.5V. This bit is identical, regardless of
read or write. The reference control bit is shown in
Table
1
2
.
Internal ADC Reference Power-Down Control
The ADC control register controls the power setting of
the internal ADC reference. Zeros must be written to
bits A/D3
–
A/D0 to control internal reference power-up
followed by the appropriate logic at the RES1 and
RES0 bits.
Table
1
3
shows the internal ADC reference
power-down control.
DAC Control Register
The MSB in this control register determines the power-
down control of the on-board DAC.
Table 14
shows the
DAC control register. Writing a zero to bit 15 (DAPD)
powers up the DAC, while writing a 1 powers down the
DAC.
Table 15
describes the DAC control register con-
tents, while
Table 16
shows the DAC power-down bit.
Keypad Control Registers
The keypad control register, keypad mask register, and
keypad column mask control register control the key-
pad scanner in the MAX1233/MAX1234. The keypad
control register (
Table 17
) controls scanning and
debouncing, while the keypad mask register (
Table 22
)
and the keypad column mask control register (
Table 24
),
ST2
0
0
0
0
1
1
1
1
ST1
0
0
1
1
0
0
1
1
ST0
0
1
0
1
0
1
0
1
SETTLING TIME
Settling time: 0μs
Settling time: 100μs
Settling time: 500μs
Settling time: 1ms
Settling time: 5ms
Settling time: 10ms
Settling time: 50ms
Settling time: 100ms
Table 11. Touch-Screen Settling Time
Control*
*
Applicable only for X, Y, Z1, and Z2 measurements.
RES1
RES0
ADC REFERENCE
SOURCE
ADC REFERENCE POWER MODE
0
0
Internal
Power up, wait for reference to settle, and power down again for each
temperature, battery, or auxiliary scan (auto power-up mode)
0
1
1
1
0
1
Internal
External
External
Always powered up
Always powered down
Always powered down
Table 13. Internal ADC Reference Auto Power-Up Control
RFV
0
1
FUNCTION
+1.0V reference
+2.5V reference
Table 12. ADC Reference Control Bit
BIT15
DAPD
BIT14
0
BIT13
0
BIT12
0
BIT11
0
BIT10
0
BIT9
0
BIT8
0
BIT7
0
BIT6
0
BIT5
0
BIT4
0
BIT3
0
BIT2
0
BIT1
0
BIT0
0
Table 14. DAC Control Register
BIT
NAME
DAPD
0
DESCRIPTION
DAC powered down
Reserved
15 (MSB)
[14:0]
Table 15. DAC Control Register
Descriptions
DAPC
0
1
FUNCTION
DAC powered up
DAC powered down
Table 16. DAC Power-Down Bit
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1239 | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
| MAX1239LEEE | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
| MAX1239MEEE | Circular Connector; No. of Contacts:128; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:25-35 |
| MAX1238LEEE | DIODE ZENER DUAL COMMON-CATHODE 300mW 10Vz 5mA-Izt 0.06 0.1uA-Ir 7.5 SOT-23 3K/REEL |
| MAX1237KEUA | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1234EGI+ | 制造商:Maxim Integrated Products 功能描述:TOUCH SCREEN CONTROLLER 28-PIN QFN EP - Rail/Tube |
| MAX1234EGI-T | 功能描述:触摸屏转换器和控制器 RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234ETI+ | 功能描述:触摸屏转换器和控制器 4Ch uWire QSPI/SPI Touch Interface RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234ETI+T | 功能描述:触摸屏转换器和控制器 4Ch uWire QSPI/SPI Touch Interface RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234EVC16 | 功能描述:数据转换 IC 开发工具 MAX1233/34 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
发布紧急采购，3分钟左右您将得到回复。