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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)： | 36/44頁 |
| 文件大?。?/td> | 1002K |
| 代理商： | EVAL-AD7877EB |
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AD7877
Register Name: Control Register 2
Write Address: 0010; Read Address: 00010; Default Value: 0x000.
Table 17.
Read/
Write
Description
0
TMR0
R/W
LSB of conversion interval timer
1
TMR1
R/W
MSB of conversion interval timer
00 = Convert only once
01 = Every 1024 clock periods (512 μs)
10 = Every 2048 clock periods (1.024 ms)
11 = Every 16384 clock periods (8.19 ms)
2
REF
R/W
Selects internal or external reference
0 = Internal reference
1 = External reference
3
POL
R/W
Indicates polarity of signal on STOPACQ pin
0 = Active low
1 = Active high
4
FCD0
R/W
LSB of first conversion delay
5
FCD1
R/W
MSB of first conversion delay
This delay occurs before the first conversion after powering up the ADC, before converting the X and Y
coordinate channels to allow settling, and after the last conversion to allow PENIRQ precharge.
00 = 1 clock period delay (500 ns)
01 = 256 clock periods delay (128 μs)
10 = 2048 clock periods delay (1.024 ms)
11 = 16384 clock periods delay (8.19 ms)
6
PM0
R/W
LSB of ADC power management code
7
PM1
R/W
MSB of ADC power management code
00 = ADC and reference powered down continuously
01 = ADC and reference* powered down when not converting
10 = ADC and reference* powered up continuously
11 = ADC powered down when not converting, reference* powered up
*Irrespective of PM bits, reference is always powered down, if REF bit is 1.
8
ACQ0
R/W
LSB of ADC acquisition time
9
ACQ1
R/W
MSB of ADC acquisition time
00 = 4 clock periods (2 μs)
01 = 8 clock periods (4 μs)
10 = 16 clock periods (8 μs)
11 = 32 clock periods (16 μs)
10
AVG0
R/W
LSB of ADC averaging code
11
AVG1
R/W
MSB of ADC averaging code
00 = No averaging (1 conversion per channel)
01 = 4 measurements per channel averaged
10 = 8 measurements per channel averaged
11 = 16 measurements per channel averaged
Rev. A | Page 36 of 44
Bit Name
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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 |
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