- 您现在的位置：买卖IC网 > PDF目录16531 > ADP5588-EVALZ (Analog Devices Inc)BOARD EVAL ADP5588 KEYPAD/GPIO PDF资料下载
参数资料
| 型号： | ADP5588-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL ADP5588 KEYPAD/GPIO |
| 标准包装： | 1 |
| 主要目的： | 接口，GPIO 扩展器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADP5588 |
| 主要属性： | 8 位 18 端口 GPIO 扩展器 |
| 次要属性： | I²C 接口 |
| 已供物品： | 板 |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
ADP5588
Data Sheet
Rev. C | Page 12 of 28
Light Sensor Inputs
Each light sensor input has two built-in comparators (the L2
comparator and the L3 comparator) with two programmable
trip points, L2 and L3. The trip points are used to select among
three operation modes based on ambient lighting conditions:
outdoor, office, and dark modes.
BRIGHTNESS
L3
L2
DARK
OFFICE
OUTDOOR
0 LUX
1 kLUX
0A
1000A
L2 = 1
L3 = 1
L2 = 1
L3 = 0
L2 = 0
L3 = 0
07673-
016
Figure 11. Light Sensor Comparator Modes and Trip Points
L2 Comparator
The L2 comparator is used to detect when the photosensor
output drops below the programmable L2_TRIP point. When
this event occurs, the L2_OUT status signal is set. L2_CMPR
contains programmable hysteresis, meaning that the photo-
sensor output must rise above L2_TRIP + L2_HYS before
L2_OUT is cleared.
L2_CMPR is enabled via the L2_EN bit (Bit 0, Register 0x31 for
Sensor 1 and Bit 0, Register 0x32 for Sensor 2). The L2_TRIP
and L2_HYS values of L2_CMPR can be set between 0 μA and
1000 μA in steps of 4 μA.
L3 Comparator
The L3 comparator is used to detect when the photosensor
output drops below the programmable L3_TRIP point. When
this event occurs, the L3_OUT status signal is set. L3_CMPR
contains programmable hysteresis, meaning that the photo-
sensor output must rise above L3_TRIP + L3_HYS before
L3_OUT is cleared. L3_CMPR is enabled via the L3_EN bit.
The L3_TRIP and L3_HYS values of L3_CMPR can be set
between 0 μA and 127.5 μA in steps of 0.5 μA.
L3_TRIP
L2_TRIP
L3_HYST
L2_HYST
1
10
100
1000
ADC RANGE (A)
07673-
017
Figure 12. Comparator Ranges
The L2_CMPR and L3_CMPR comparators can be enabled
independently of each other, and the ADC and comparator(s)
run continuously when L2_EN and/or L3_EN is set.
Photosensor Operation
The comparator inputs remain idle until enabled, at which
point they detect lighting conditions from the photosensor
output. Depending on lighting conditions, and where the L2
and L3 trip points are set in the comparator level trip registers
(Register 0x33 through Register 0x3A), the comparators set a
value of 1 or 0 to L2_OUT and L3_OUT. The values of L2 and
L3 determine what mode or setting adjustment is required for a
particular lighting condition. Figure 11, Figure 12, and Table 15
summarize the mode settings and logical values of L2 and L3.
Table 15. L2_OUT and L3_OUT Comparator Mode
Combination
L3
L2
Mode
0
Outdoor
0
1
Office
1
Dark
It is also possible to use the light sensor comparators in single-
shot mode. A single-shot measurement is done when the
FORCE_RD bit in Register 0x31 is set. After the single-shot
measurement is completed, the internal state machine clears the
FORCE_RD bit. It takes 80 ms for a complete conversion. To
reduce the potential for flickering, the sensors can be programmed
for a number of sequential readings. The filter settings in
Register 0x31 and Register 0x32 determine the number of
sequential readings needed by the user; these settings range
from 80 ms to 10.24 sec.
L2_TRIP
L2_HYST
FILTER
SETTING
L2_EN
L2_OUT
L3_OUT
COMP
INPUT
ADC
PHOTO-
SENSOR
L3_EN
VCC
L2_CMP
L3_CMP
L3_TRIP
L3_HYST
07673-
018
Figure 13. Light Sensor and Trip Points Block Diagram
相关PDF资料 |
PDF描述 |
|---|---|
| LBR2012T101M | INDUCTOR WOUND 100UH 80MA 0805 |
| VI-J0N-EZ-S | CONVERTER MOD DC/DC 18.5V 25W |
| 1062672041 | F/O CABLE MTP/JMPR (4) 500MM |
| A1CXH-2636M | IDC CABLE - AKC26H/AE26M/X |
| RSC08DREF-S13 | CONN EDGECARD 16POS .100 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP5588XCPZ-R7 | 功能描述:Keypads and Alarm Systems Interface 制造商:analog devices inc. 系列:- 包装:- 零件状态:上次购买时间 应用:键盘和警报系统 接口:I2C 电压 - 电源:1.8 V ~ 3 V 封装/外壳:- 供应商器件封装:- 安装类型:- 标准包装:1 |
| ADP5588XCPZ-X2-R7 | 功能描述:Keypads and Alarm Systems Interface 制造商:analog devices inc. 系列:- 包装:- 零件状态:上次购买时间 应用:键盘和警报系统 接口:I2C 电压 - 电源:1.8 V ~ 3 V 封装/外壳:- 供应商器件封装:- 安装类型:- 标准包装:1 |
| ADP5589ACBZ-00-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:* 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
| ADP5589ACBZ-01-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:* 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
| ADP5589ACBZ-02-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 类别:集成电路 (IC) >> 接口 - 专用 系列:* 特色产品:NXP - I2C Interface 标准包装:1 系列:- 应用:2 通道 I²C 多路复用器 接口:I²C，SM 总线 电源电压:2.3 V ~ 5.5 V 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:剪切带 (CT) 安装类型:表面贴装 产品目录页面:825 (CN2011-ZH PDF) 其它名称:568-1854-1 |
发布紧急采购，3分钟左右您将得到回复。