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参数资料
| 型号： | MAX1233-MAX1234 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| 中文描述： | 【15kV ESD保护触摸屏控制器包括DAC和键盘控制器 |
| 文件页数： | 21/44页 |
| 文件大小： | 706K |
| 代理商： | MAX1233-MAX1234 |
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M
±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
PENSTS
ADSTS
A/D3
A/D2
A/D1
A/D0
RES1
RES0
AVG1
AVG0
CNR1
CNR0
ST2
ST1
ST0
RFV
DESCRIPTION
15 (MSB)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0 (LSB)
Read: pen interrupt status; Write: sets interrupt initiated touch-screen scans
Read: ADC status; Write: stops ADC
Selects ADC scan functions
Selects ADC scan functions
Selects ADC scan functions
Selects ADC scan functions
Controls ADC resolution
Controls ADC resolution
Controls ADC result averaging
Controls ADC result averaging
Controls ADC conversion rate
Controls ADC conversion rate
Controls touch-screen settling wait time
Controls touch-screen settling wait time
Controls touch-screen settling wait time
Chooses 1.0V or 2.5V reference
Table 5. ADC Control Register Bit Descriptions
PENSTS
ADSTS
READ FUNCTION
WRITE FUNCTION
0
0
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.
1
0
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.
0
1
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.
1
1
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
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1233 | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| MAX1233EGI | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| MAX1234EGI | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1234EGI | 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 |
| 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 |
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