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参数资料
| 型号： | MXB7843EEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/21页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR TOUCH RES 16QSOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 类型： | 电阻 |
| 触摸面板接口： | 4 线 |
| 输入数/键： | 1 TSC |
| 分辨率（位）： | 12 b |
| 数据接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 数据速率/采样率 (SPS，BPS)： | 125k |
| 电压基准： | 外部 |
| 电源电压： | 2.38 V ~ 5.25 V |
| 电流 - 电源： | 650µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
MXB7843
occur at a faster clock rate since settling to better than 8
bits is all that is required. The clock rate can be as much
as 25% faster. The faster clock rate and fewer clock
cycles combine to increase the conversion rate.
Data Format
The MXB7843 output data is in straight binary format as
shown in Figure 10. This figure shows the ideal output
code for the given input voltage and does not include
the effects of offset, gain, or noise.
Applications Information
Basic Operation of the MXB7843
The 4-wire touch-screen controller works by creating a
voltage gradient across the vertical or horizontal resis-
tive network connected to the MXB7843, as shown in
the Typical Application Circuit. The touch screen is
biased through internal MOSFET switches that connect
each resistive layer to VDD and ground on an alternate
basis. For example, to measure the Y position when a
2.375V to 5.25V, 4-Wire Touch-Screen
Controller
14
______________________________________________________________________________________
DCLK
18
9
12
16
4
5
6
7
8
9
10
11
3
2
1
0
20
24
4
DOUT
A/D STATE
BUSY
CS
DIN
SA2
A1
A0
MODE
ON
OFF
(MSB)
(LSB)
CONVERSION
IDLE
TB
ACQUIRE
CONVERSION
IDLE
RB1
OFF
ON
PD1
PD0
(START)
SER/
DFR
DRIVERS1 AND 2
(SER/DFR HIGH)
DRIVERS1 AND 2
(SER/DFR LOW)
tACQ
ACQUIRE
RB2
RB3
Figure 7. Conversion Timing, 24-Clock per Conversion, 8-Bit Bus Interface
18
15
1
8
15
1
DCLK
DIN
DOUT
BUSY
S
CONTROL BYTE 0
CONTROL BYTE 1
CONTROL BYTE 2
S
CONVERSION RESULT 0
CONVERSION RESULT 1
B11 B10 B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
CS
Figure 8. 15-Clock/Conversion Timing
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MXB7843EEE+ | 功能描述:触摸屏转换器和控制器 2.375-5.25V 4-Wire Touch-Screen Ctlr 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 |
| MXB7843EEE+T | 功能描述:触摸屏转换器和控制器 2.375-5.25V 4-Wire Touch-Screen Ctlr 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 |
| MXB7843EEE-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 |
| MXB7843EUE | 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 |
| MXB7843EUE+ | 功能描述:触摸屏转换器和控制器 2.375-5.25V 4-Wire Touch-Screen Ctlr 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 |
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