- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362802 > EVAL-AD7877EB (Analog Devices, Inc.) Touch Screen Controller PDF資料下載
參數(shù)資料
| 型號： | EVAL-AD7877EB |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Touch Screen Controller |
| 中文描述： | 觸摸屏控制器 |
| 文件頁數(shù)： | 21/44頁 |
| 文件大?。?/td> | 1002K |
| 代理商： | EVAL-AD7877EB |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當(dāng)前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
AD7877
Table 6. Codes for Selecting Input Channel and Normal or Ratiometric Conversion
Channel
SER/DFR
CHADD(3:0)
0
0
0 0 0 0
1
0
0 0 0 1
2
0
0 0 1 0
3
0
0 01 1
4
0
0 1 00
5
0
0 1 0 1
6
0
0 1 1 0
7
0
0 1 1 1
8
0
1 0 0 0
9
0
1 0 0 1
10
0
1 0 1 0
-
0
1 0 1 1
-
0
1 1 0 0
-
0
1 1 0 1
-
0
1 1 1 0
-
0
1 1 1 1
0
1
0 0 0 0
1
1
0 0 0 1
2
1
0 0 1 0
3
1
0 0 1 1
4
1
0 1 0 0
5
1
0 1 0 1
6
1
0 1 1 0
7
1
0 1 1 1
8
1
1 0 0 0
9
1
1 0 0 1
10
1
1 0 1 0
-
1
10 1 1
-
1
1 1 0 0
-
1
1 1 0 1
-
1
1 1 1 0
-
1
1 1 1 1
Rev. A | Page 21 of 44
Analog Input
X+ (Y Position)
Y+ (X Position)
Y (Z2)
AUX1
AUX2
AUX3
BAT1
BAT2
TEMP1
TEMP2
X+ (Z1)
X Switches
OFF
ON
X+ OFF, X ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
X+ OFF, X ON
Y Switches
ON
OFF
Y+ ON, Y OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Y+ ON, Y OFF
+REF
Y+
X+
Y+
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
Y+
REF
Y
X
X
GND
GND
GND
GND
GND
GND
GND
X
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
X+ (Y Position)
Y+ (X Position)
Y (Z2)
AUX1
AUX2
AUX3
BAT1
BAT2
TEMP1
TEMP2
X+ (Z1)
OFF
ON
X+ OFF, X ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
X+ OFF, X ON
ON
OFF
Y+ ON, Y OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Y+ ON, Y OFF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
V
REF
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
INVALID ADDRESS
CONTROL REGISTER 2
Timer (Control Register 2 Bits <1:0>)
The TMR bits in Control Register 2 enable the ADC to
repeatedly perform a conversion or conversion sequence either
once only or at intervals of 512 μs, 1.024 ms, or 8.19 ms. In slave
mode, the timer starts as soon as the conversion sequence is
finished. In master mode, the timer starts at the end of a conver-
sion sequence only if the screen remains touched. If the touch is
released at any stage, then the timer stops and, the next time the
screen is touched, a conversion sequence begins immediately.
Table 7. Control Register 2 Timer Selection
TMR1
TMR0
Function
0
0
Convert only once (default)
0
1
Every 1024 clocks (512 μs)
1
0
Every 2048 clocks (1.024 ms)
1
1
Every 16,384 clocks (8.19 ms)
Int/Ext Reference (Control Register 2 Bit <2>)
If the REF bit in Control Register 2 is 0 (default value), the
internal reference is selected. If any connection is made to V
REF
while the internal reference is selected (for example, to supply a
reference to other circuits), it should be buffered. An external
power supply should not be connected to this pin while REF is
equal to 0, because it might overdrive the internal reference.
Note also that, because the internal reference is 2.5 V, it operates
only with supply voltages down to 2.7 V. Below this value an
external reference should be used.
If the REF bit is 1, the V
REF
pin becomes an input and the
internal reference is powered down. This overrides any setting
of the PM bits with regard to the reference. An external
reference can then be applied to the REF pin.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EVAL-AD7887CB | +2.7 V to +5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead uSOIC |
| EVAL-AD7888CB | +2.7 V to +5.25 V, Micropower, 8-Channel, 125 kSPS, 12-Bit ADC in 16-Lead TSSOP |
| EVAL-AD7892-2CB | LC2MOS Single Supply, 12-Bit 600 kSPS ADC |
| EVAL-AD7892-3CB | LC2MOS Single Supply, 12-Bit 600 kSPS ADC |
| EVAL-AD7898CB | Evaluation Board for 5V, 12-Bit, Serial 220kSPS ADC in 8-Pin Package |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-AD7877EBZ | 功能描述:BOARD EVALUATION FOR AD7877 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-AD7879-1EBZ | 功能描述:BOARD EVALUATION FOR AD7879-1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-AD7879EBZ | 功能描述:BOARD EVALUATION FOR AD7879 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-AD7887CB | 制造商:Analog Devices 功能描述:EVAL BD FOR 2.7 V TO 5.25 V, MICROPWR, 2CH, 125 KSPS, 12-BIT - Bulk |
| EVAL-AD7887CB4 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。