參數(shù)資料
型號： MAX1233
廠商： 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保護觸摸屏控制器，包含DAC及鍵盤控制器
文件頁數(shù)： 41/44頁
文件大?。?/td> 706K
代理商： MAX1233
M
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
______________________________________________________________________________________
41
Equation 5 shows that the maximum output voltage occurs
for the minimum DAC voltage, and that the minimum
output voltage occurs for the maximum DAC voltage.
To ensure that the desired output swing is achieved,
choose appropriate values of R1, R2, and R3.
Calculate V
OUTMAX
using the following equation:
V
OUTMAX
= V
REFMAX
+ (R1
MAX
/ R2
MIN
)V
REFMAX
+ (R1
MAX
/ R3
MIN
) (V
REFMAX
- V
DACMIN
)
[Equation 6]
If V
OUTMAX
exceeds the maximum ratings of the
LCD/TFT display, the DAC codes that cause the output
voltage to go too high must be avoided.
Calculate V
OUTMIN
using the following equation:
V
OUTMIN
= V
REFMIN
+ (R1
MIN
/ R2
MAX
)V
REFMIN
+
(R1
MAX
/ R3
MIN
) (V
REFMIN
- V
DACMAX
)
[Equation 7]
If V
OUTMIN
is too low for desired operation, avoid the DAC
codes, which cause the output voltage to go too low.
Connection to Standard Interface
SPI and MICROWIRE Interfaces
When using an SPI interface (
Figure
28a) or
MICROWIRE (
Figure
28b), set the CPOL = CPHA = 0.
At least four 8-bit operations are necessary to read or
write data to/from the MAX1233/MAX1234. DOUT data
transitions on the serial clock
’
s falling edge and is
clocked into the μP on the DCLK
’
s rising edge. The first
MAX1233
MAX1234
R1
R3
i
1
i
2
i
3
R2
AV
DD
DAC
DACOUT
FEEDBACK
RESISTORS
V
1.25V
ERROR AMP
SIMPLIFIED DC/DC CONVERTER
V
BATT
V
OUT
(LCD BIAS)
CONTROL
MAX1677
Figure 27. LCD Contrast Control Circuit
MAX1233
MAX1234
CS
SCK
MISO
MOSI
CS
DCLK
DOUT
DIN
SPI
SS
V
DD
BUSY
PENIRQ
KEYIRQ
Figure 28a. SPI Interface
MAX1233
MAX1234
CS
SCK
MISO
MOSI
CS
DCLK
DOUT
DIN
MICROWIRE
BUSY
PENIRQ
KEYIRQ
Figure 28b. MICROWIRE Interface
相關PDF資料
PDF描述
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
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
相關代理商/技術參數(shù)
參數(shù)描述
MAX1233EGI 功能描述:觸摸屏轉(zhuǎn)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
MAX1233EGI+ 制造商:Maxim Integrated Products 功能描述:
MAX1233EGI-T 功能描述:觸摸屏轉(zhuǎn)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
MAX1233ETI+ 功能描述:觸摸屏轉(zhuǎn)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
MAX1233ETI+T 功能描述:觸摸屏轉(zhuǎn)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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