- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375240 > AD7877 (Analog Devices, Inc.) Touch Screen Controller PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7877 |
| 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(yè)數(shù)： | 21/44頁(yè) |
| 文件大?。?/td> | 1002K |
| 代理商： | AD7877 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)當(dāng)前第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)
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 |
|---|---|
| AD7877ACP-500RL7 | Touch Screen Controller |
| AD7877ACP-REEL | Touch Screen Controller |
| AD7877ACP-REEL7 | Touch Screen Controller |
| AD7877ACPZ-500RL7 | Touch Screen Controller |
| AD7877ACPZ-REEL | Touch Screen Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7877AACPZ-500RL7 | 制造商:Analog Devices 功能描述: |
| AD7877AACPZ-REEL7 | 制造商:Analog Devices 功能描述: |
| AD7877ACBZ-REEL | 功能描述:IC CTRLR TOUCH SCREEN 25-WLCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評(píng)估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準(zhǔn):- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD7877ACBZ-REEL7 | 功能描述:IC CTRLR TOUCH SCREEN 25-WLCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評(píng)估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準(zhǔn):- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD7877ACP | 制造商:Analog Devices 功能描述:TOUCH SCREEN CNTRLR 32LFCSP - Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。