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参数资料
| 型号： | MXB7846EEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/24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： | 温度传感器 |
| 输入类型： | 模拟 |
| 输出类型： | 数字 |
| 接口： | 4 线 |
| 电流 - 电源： | 950µA |
| 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 |
| 产品目录页面： | 1424 (CN2011-ZH PDF) |
MXB7846
2.375V to 5.25V, 4-Wire Touch-Screen Controller
with Internal Reference and Temperature Sensor
16
______________________________________________________________________________________
The fastest the MXB7846 can run with
CS held continu-
ously low is 15 clock conversions. Figure 10 shows the
serial-interface timing necessary to perform a conver-
sion every 15 DCLK cycles. If
CS is connected low and
DCLK is continuous, guarantee a start bit by first clock-
ing in 16 zeros.
Most microcontrollers (Cs) require that data transfers
occur in multiples of eight DCLK cycles; 16 clocks per
conversion is typically the fastest that a C can drive the
MXB7846. Figure 11 shows the serial interface timing nec-
essary to perform a conversion every 16 DCLK cycles.
8-Bit Conversion
The MXB7846 provides an 8-bit conversion mode
selected by setting the MODE bit in the control byte
high. In the 8-bit mode, conversions complete four
clock cycles earlier than in the 12-bit output mode,
resulting in 25% faster throughput. This can be used in
conjunction with serial interfaces that provide 12-bit
transfers, or two conversions could be accomplished
with three 8-bit transfers. Not only does this shorten each
conversion by 4 bits, but each conversion can also
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.
SUPPLY CURRENT (typ) (A)
PD1
PD0
PENIRQ
STATUS
DURING
CONVERSION
AFTER
CONVERSION
0
Enabled
ADC is ON during conversion, OFF between conversion
200
1
0
1
Disabled
ADC is always ON, reference is always OFF
200
1
0
Disabled
ADC is always OFF, reference is always ON
400
1
Disabled
ADC is always ON, reference is always ON
600
Table 4. Power-Mode Selection
DCLK
18
9
12
16
4
5
6
7
8
9
10
11
32
10
20
24
4
DOUT
A/D STATE
BUSY
CS
DIN
SA2
A1
A0
MODE
ON
OFF
(MSB)
(LSB)
CONVERSION
ACQUIRE
IDLE
tACQ
TB
ACQUIRE
CONVERSION
IDLE
RB1
OFF
ON
PD1
PD0
(START)
SER/
DFR
DRIVERS 1 AND 2
(SER/DFR HIGH)
DRIVERS 1 AND 2
(SER/DFR LOW)
RB2
RB3
Figure 9. Conversion Timing, 24-Clock per Conversion, 8-Bit Bus Interface
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相关代理商/技术参数 |
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| MXB7846EEE+ | 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 |
| MXB7846EEE+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 |
| MXB7846EEE-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 |
| MXB7846EUE | 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 |
| MXB7846EUE+ | 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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