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參數(shù)資料
| 型號(hào)： | AD7877ACBZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 44/45頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CTRLR TOUCH SCREEN 25-WLCSP |
| 標(biāo)準(zhǔn)包裝： | 10,000 |
| 類型： | 電阻 |
| 觸摸面板接口： | 4 線 |
| 輸入數(shù)/鍵： | 1 TSC |
| 分辨率（位）： | 12 b |
| 評(píng)估套件： | 可供 |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 數(shù)據(jù)速率/采樣率 (SPS，BPS)： | 125k |
| 電壓基準(zhǔn)： | 外部，內(nèi)部 |
| 電源電壓： | 2.7 V ~ 5.25 V |
| 電流 - 電源： | 1µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 25-UFBGA，WLCSP |
| 供應(yīng)商設(shè)備封裝： | 25-WLCSP |
| 包裝： | 帶卷 (TR) |
| 配用： | EVAL-AD7877EBZ-ND - BOARD EVALUATION FOR AD7877 |
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Data Sheet
AD7877
Rev. D | Page 7 of 44
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
03796-
002
NC
1
BAT2
2
BAT1
3
AUX3/GPIO3
4
AUX2/GPIO2
5
AUX1/GPIO1
6
VCC 7
NC
8
NC
24
DAV
23
ALERT
22
GPIO4
21
STOPACQ
20
DIN
19
CS
18
PENIRQ
17
NC
V
RE
F
AO
UT
ARNG
V
DRI
V
E
DO
UT
DCL
K
NC
32
31
30
29
28
27
26
25
NC
X–
Y–
X+
Y+
AG
ND
DG
ND
NC
9
10
11
12
13
14
15
16
NOTES
1. NC = NO CONNECT
2. THE EXPOSED PAD IS NOT CONNECTED INTERNALLY. FOR
INCREASED RELIABILITY OF THE SOLDER JOINTS AND
MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED
THAT THE PAD BE SOLDERED TO GROUND PLANE.
AD7877
TOP VIEW
(Not to Scale)
Figure 4. LFCSP Pin Configuration
AD7877 WLCSP
TOP VIEW
Not to Scale
03796-
051
DCLK
ALERT
STOP
ACQ
CS
DGND
DOUT
GPIO4
DIN
PENIRQ
Y+
VDRIVE
DAV
AUX2/
GPI02
AGND
X+
ARNG
VREF
BAT1
VCC
Y–
AOUT
BAT2
AUX3/
GPI03
AUX1/
GPI01
X–
PIN 1
Figure 5. WLCSP Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1, 8, 9, 16,
24, 25, 32
NC
No Connect.
2
BAT2
Battery Monitor Input. ADC Input Channel 7.
3
BAT1
Battery Monitor Input. ADC Input Channel 6.
4
AUX3/GPIO3
Auxiliary Analog Input. ADC Input Channel 5. Can be reconfigured as GPIO pin.
5
AUX2/GPIO2
Auxiliary Analog Input. ADC Input Channel 4. Can be reconfigured as GPIO pin.
6
AUX1/GPIO1
Auxiliary Analog Input. ADC Input Channel 3. Can be reconfigured as GPIO pin.
7
VCC
Power Supply Input. The VCC range for the AD7877 is from 2.2 V to 5.25 V.
10
X
Touch Screen Position Input.
11
Y
Touch Screen Position Input. ADC Input Channel 2.
12
X+
Touch Screen Position Input. ADC Input Channel 0.
13
Y+
Touch Screen Position Input. ADC Input Channel 1.
14
AGND
Analog Ground. Ground reference point for all analog circuitry on the AD7877. All analog input signals and any
external reference signal should be referred to this voltage.
15
DGND
Digital Ground. Ground reference for all digital circuitry on the AD7877. Refer all digital input signals to this
voltage.
17
PENIRQ
Pen Interrupt. Digital active low output (has a 50 k internal pull-up resistor).
18
CS
Chip Select Input. Active low logic input. This input provides the dual function of initiating conversions on the
AD7877 and enabling the serial input/output register.
19
DIN
SPI Serial Data Input. Data to be written to the AD7877 registers are provided on this input and clocked into
the register on the rising edge of DCLK.
20
STOPACQ
Stop Acquisition Pin. A signal applied to this pin can be monitored by the AD7877, so that acquisition of new
data by the ADC is halted while the signal is active. Used to reduce the effect of noise from an LCD screen on
the touch screen measurements.
21
GPIO4
Dedicated General-Purpose Logic Input/Output Pin.
22
ALERT
Digital Active Low Output. Interrupt output that goes low if a GPIO data bit is set, or if the AUX1, TEMP1, BAT1,
or BAT2 measurements are out of range.
23
DAV
Data Available Output. Active low logic output. Asserts low when new data is available in the AD7877 results
registers.
26
DCLK
External Clock Input. Logic input. DCLK provides the serial clock for accessing data from the part.
27
DOUT
Serial Data Output. Logic output. The conversion result from the AD7877 is provided on this output as a serial
data stream. The bits are clocked out on the falling edge of the DCLK input. This output is high impedance
when CS is high.
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參數(shù)描述 |
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| 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 |
| AD7877ACP-500RL7 | 制造商:Analog Devices 功能描述:TOUCH SCREEN CONTROLLER |
| AD7877ACP-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Touch Screen Controller |
| AD7877ACP-REEL7 | 制造商:Analog Devices 功能描述:TOUCH SCREEN CONTROLLER |
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