參數(shù)資料
型號： MAX1233ETI+T
廠商： Maxim Integrated Products
文件頁數(shù)： 25/44頁
文件大?。?/td> 0K
描述： IC CNTRLR TOUCH 28-TQFN
其它有關文件： Automotive Product Guide
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,500
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： 外部，內部
電源電壓： 2.7 V ~ 3.6 V
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 28-WFQFN 裸露焊盤
供應商設備封裝： 28-TQFN-EP（5x5）
包裝： 帶卷 (TR)
Battery-Voltage Monitors
Two dedicated analog inputs (BAT1 and BAT2) allow the
MAX1233/MAX1234 to monitor the battery voltages prior
to the DC/DC converter. Figure 14 shows the battery volt-
age monitoring circuitry. The MAX1233/ MAX1234 direct-
ly monitor battery voltages from 0.5V to 6V. An internal
resistor network divides down BAT1 and BAT2 by 4 so
that a 6V battery voltage results in a 1.5V input to the
ADC. To minimize power consumption, the divider is only
enabled during the sampling of BAT1 and BAT2. Figure
15 illustrates the process of battery input reading.
MAX1233/MAX1234
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
______________________________________________________________________________________
31
TOUCH
X-POSITION
SENSE LINE
OPEN CIRCUIT
X+
X-
Y+
Y-
FORCE LINE
SENSE LINE
MEASURE X-POSITION
FORCE LINE
V
TOUCH
Z1-RESISTANCE
OPEN CIRCUIT
X+
X-
Y+
Y-
FORCE LINE
SENSE LINE
MEASURE Z1-RESISTANCE
FORCE LINE
V
TOUCH
Z2-RESISTANCE
OPEN CIRCUIT
X+
X-
Y+
Y-
FORCE LINE
MEASURE Z2-RESISTANCE
Figure 13. Pressure Measurement Block Diagram
CONVERTER
0.125V TO 1.5V
2.5k
Ω
7.5k
Ω
VBAT
BATTERY
0.5V TO
6.0V
DC/DC
CONVERTER
2.7V
AVDD
Figure 14. Battery Measurement Block Diagram
BATTERY INPUT 1 OR
BATTERY INPUT 2
DONE
NO
IS DATA
AVERAGING DONE?
STORE BATTERY INPUT 1 OR 2 IN
BAT1 OR BAT2 REGISTER
POWER DOWN
ADC
POWER UP
ADC
POWER UP REFERENCE
CONVERT
BATTERY INPUT 1 OR 2
POWER DOWN REFERENCE
TURN OFF CLOCK
HOST WRITES
ADC
CONTROL REGISTER
START CLOCK
IS ADC
REFERENCE IN
AUTO POWER-DOWN
MODE?
NO
YES
SET BUSY
LOW
YES
SET BUSY HIGH
Figure 15. Battery Voltage-Reading Flowchart
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相關代理商/技術參數(shù)
參數(shù)描述
MAX1234EGI 功能描述:觸摸屏轉換器和控制器 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
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:觸摸屏轉換器和控制器 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+ 功能描述:觸摸屏轉換器和控制器 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
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