參數(shù)資料
型號： MAX1233EGI
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 消費家電
英文描述： 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller
中文描述： SPECIALTY CONSUMER CIRCUIT, QCC28
封裝： 5 X 5 MM, 0.80 MM HEIGHT, QFN-28
文件頁數(shù)： 29/44頁
文件大?。?/td> 706K
代理商： MAX1233EGI
M
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
______________________________________________________________________________________
29
DAC Data Register
The DAC data register stores data that is to be written
to the 8-bit DAC.
Table 36
shows the configuration of
the DAC data register. It is right justified with bit 7
–
bit 0
storing the input data.
GPIO Data Register
Tables 37
and
38
show the format and descriptions for
the GPIO data register. The register is left justified with
data in bit 15
–
bit 8. Reading the GPIO data register
gives the state of the R_ and C_ pins. Data written to
the GPIO data register appears on those R_ and C_
pins, which are configured as general-purpose outputs.
Data written to pins not configured as general-purpose
outputs is not stored.
ADC Transfer Function
The MAX1233/MAX1234 output data is in straight bina-
ry format as shown in
Figure 11
. This
figure
shows the
ideal output code for the given input voltage and does
not include the effects of offset error, gain error, noise,
or nonlinearity.
Applications Information
Programmable 8-/10-/12-Bit Resolution
The MAX1233/MAX1234 provide the option of three dif-
ferent resolutions for the ADC: 8, 10, or 12 bits. Lower
resolutions are practical for some measurements such
as touch pressure. Lower resolution conversions have
smaller conversion times and therefore consume less
power. Program the resolution of the MAX1233/
MAX1234 12-bit ADCs by writing to the RES1 and RES0
bits in the ADC control register. When the MAX1233/
MAX1234 power up, both bits are set to zero so the
resolution is set to 8 bits with a 31μs internally timed
reference power-up delay as indicated by the ADC res-
olution control table. As explained in the control register
section, the RES1 and RES0 bits control the reference
COMPONENT
R1
R2
R3
R4
C1
K0
K1
K2
K3
C2
K4
K5
K6
K7
C3
K8
K9
K10
K11
C4
K12
K13
K14
K15
Table 35. Keypad to Key Bit Mapping
BIT15
0
BIT14
0
BIT13
0
BIT12
0
BIT11
0
BIT10
0
BIT9
0
BIT8
0
BIT7
DA7
BIT6
DA6
BIT5
DA5
BIT4
DA4
BIT3
DA3
BIT2
DA2
BIT1
DA1
BIT0
DA0
Table 36. DAC Data Register
BIT15
GPD7
BIT14
GPD6
BIT13
GPD5
BIT12
GPD4
BIT11
GPD3
BIT10
GPD2
BIT9
GPD1
BIT8
GPD0
BIT7
0
BIT6
0
BIT5
0
BIT4
0
BIT3
0
BIT2
0
BIT1
0
BIT0
0
Table 37. GPIO Data Register
BIT
15...8
7...0
NAME
GPD7...0
0
DESCRIPTION
GPIO data bits for GPIO pins 7...0
Reserved
Table 38. GPIO Data Register Descriptions
OUTPUT CODE
FULL-SCALE
TRANSITION
11 ... 111
11 ... 110
11 ... 101
00 ... 011
00 ... 010
00 ... 001
00 ... 000
3
0
FS
FS - 3/2LSB
FS = V
REF
ZS = GND
1LSB = V
INPUT VOLTAGE (LSB)
4096
2
1
MAX1233
MAX1234
Figure 11. Ideal Input Voltages and Output Codes
相關PDF資料
PDF描述
MAX1234EGI 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller
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相關代理商/技術參數(shù)
參數(shù)描述
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
MAX1234EGI 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
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