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| 型号： | AD7879-1WARUZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/41页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT CTRLR TOUCH 16TSSOP |
| 标准包装： | 1,000 |
| 类型： | 电阻 |
| 触摸面板接口： | 4 线 |
| 输入数/键： | 1 TSC |
| 分辨率（位）： | 12 b |
| 评估套件： | * |
| 数据接口： | I²C，串行 |
| 数据速率/采样率 (SPS，BPS)： | 105k |
| 电压基准： | 内部 |
| 电源电压： | 1.6 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
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AD7879/AD7889
Rev. C | Page 22 of 40
DETAILED REGISTER DESCRIPTIONS
All addresses and default values are expressed in hexadecimal.
Table 12. Control Register 1
Address
Bit Name
Data Bit
Description
Default
Value
0x01
Disable PENIRQ
15
Pen interrupt enable.
0x0000
0 = PENIRQ is enabled.
1 = PENIRQ is disabled and INT is enabled.
CHNL ADD[2:0]
[14:12]
ADC channel address for manual conversion (ADC mode = 01).
111 = X+ input (Y position).
110 = Y+ input (X position).
101 = X+ (Z1) input for touch-pressure calculation.
100 = Y (Z2) input (used for touch-pressure measurement).
011 = AUX input.1
010 = VBAT input.1
001 = temperature measurement.
000 = not applicable.
ADC MODE[1:0]
[11:10]
ADC mode.
00 = no conversion.
01 = single conversion.2
10 = conversion sequence (slave mode).2
11 = conversion sequence (master mode).
ACQ[1:0]
[9:8]
ADC acquisition time.
00 = 4 clock periods (2 s).
01 = 8 clock periods (4 s).
10 = 16 clock periods (8 s).
11 = 32 clock periods (16 s).
Note that the acquisition time does not apply to the temperature sensor channels;
the temperature channel has a constant settling time of 16 μs.
TMR[7:0]
[7:0]
Conversion interval timer.
Starts at 550 s (00000001) and continues to 9.440 ms (11111111) in steps of 35 s
Note that, in slave mode, the conversion interval timer starts to count as soon as the
conversion sequence is finished; in master mode, it starts to count again only if the
screen remains touched. If the screen is released, the timer stops counting and, on
the next screen touch, a conversion starts immediately.
1
If GPIO is enabled in Control Register 2 (Bit 13), AUX and VBAT are both ignored. If AUX and VBAT are both selected in Control Register 3 and GPIO is disabled, AUX is
ignored and VBAT is measured.
2
Note that these bits are cleared to 00 at the end of the conversion sequence if the conversion interval timer bits in Control Register 1 (Address 0x01) Bits[7:0] = 0x00 at
the end of the conversion sequence.
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| AD7879ACBZ-500R7 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Voltage Controller for Touch Screens |
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| AD7879ACPZ-RL | 功能描述:IC ADC 12BIT CTLR TOUCH 16LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:- 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD7879WACPZ-R5 | 功能描述:Touchscreen Controller 4-Wire 12 bit SPI Interface 16-LFCSP-VQ (4x4) 制造商:analog devices inc. 系列:- 包装:剪切带（CT） 零件状态:在售 类型:电阻 触摸面板接口:4 线 输入/按键数:1 TSC 分辨率（位）:12 b 评估工具:* 数据接口:SPI 数据速率/采样率（SPS，BPS）:105k 电压基准:外部 电压 - 电源:1.6 V ~ 3.6 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商器件封装:16-LFCSP-VQ（4x4） 标准包装:1 |
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