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| 型號： | ADP5588-EVALZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 17/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL ADP5588 KEYPAD/GPIO |
| 標準包裝： | 1 |
| 主要目的： | 接口，GPIO 擴展器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADP5588 |
| 主要屬性： | 8 位 18 端口 GPIO 擴展器 |
| 次要屬性： | I²C 接口 |
| 已供物品： | 板 |
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ADP5588
Data Sheet
Rev. C | Page 24 of 28
APPLICATIONS INFORMATION
CONTROL
REGISTERS
HOST
PROCESSOR
CONTROL
INTERFACE
REF
VOLTAGE
C9
C8
R7
R6
R5
R4
R3
R2
R1
R0
C0
C1
C2
C3
C4
C5
C6
C7
C9
C8
ENABLE 2 (GPO)
BACKLIGHT
ENABLE (GPO)
A0
A1
A2
A3
A4
A5
A6
A7
B0
B1
B2
B3
B4
B5
B6
B7
C0
C1
C2
C3
C4
C5
C6
C7
D0
D1
D2
D3
D4
D5
D6
D7
E0
E1
E2
E3
E4
E5
E6
E7
F0
F1
F2
F3
F4
F5
F6
F7
G0
G1
G2
G3
G4
G5
G6
G7
H0
H1
H2
H3
H4
H5
H6
H7
I0
I1
I2
I3
I4
I5
I6
I7
J0
J1
J2
J3
J4
J5
J6
J7
SCL
SDA
VCC
GND
VCC
SCL
GPL1
GPL2
SDA
RST
INT
19
21
23
22
18
17
20
24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
REF
VOLTAGE
0.1F
VCC
07673-
022
BACKLIGHT
DRIVER
PWM OUTPUT
ADP5588
VCC
RST
INT
Figure 17. ADP5588 Detailed Application Block Diagram
APPLICATIONS OVERVIEW
The ADP5588 is designed to complement host processors in a
variety of ways. Its versatility makes it the ideal solution for
mobile platforms that require extended keypads and GPIO
expanders. The programmable registers give the designer the
flexibility to configure any or all its GPIOs in a variety of ways.
Figure 17 shows a detailed application diagram.
KEYPAD CURRENT
Keypad current drain varies based on how many keys and how
many rows and columns are pressed during multiple key presses.
Table 52 shows typical current drain for a single press and for
two key presses.
Table 52. Typical Current Drain
Key Presses
Conditions1
Typical
Unit
1
VCC = 1.8 V to 3.0 V
55
μA
2
VCC = 1.8 V to 3.0 V
100
μA
1
TA = TJ = 40°C to +85°C.
BACKLIGHT CONTROL APPLICATION
Although the ADP5588 is not designed with a backlight driver,
the built-in light sensor comparator inputs, with programmable
registers and trip points, give the backlight designer all the
necessary tools to control the backlight based on lighting con-
ditions or environment. With a few I2C commands, the designer
can program the device to monitor lighting conditions and
trigger an interrupt based on preset trip points. Once program-
med, the state machine uses these trip points and hysteresis
values to alert the microprocessor of any change in lighting
conditions. In addition to the L2_OUT and L3_OUT bits, four
additional registers (Register 0x3B through Register 0x3E, two
registers per light sensor) provide detailed accounts of the
internal ADC due to light condition changes. The ADC has a
full-scale current of 1000 μA and a dynamic range of 8000,
which translates to 0.125 μA or 0.3125 lux per step. These two
corresponding registers per sensor form a 13-bit register that
can be read to provide detailed translation of the light sensor
input at any instant.
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相關代理商/技術參數(shù) |
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| ADP5588XCPZ-R7 | 功能描述:Keypads and Alarm Systems Interface 制造商:analog devices inc. 系列:- 包裝:- 零件狀態(tài):上次購買時間 應用:鍵盤和警報系統(tǒng) 接口:I2C 電壓 - 電源:1.8 V ~ 3 V 封裝/外殼:- 供應商器件封裝:- 安裝類型:- 標準包裝:1 |
| ADP5588XCPZ-X2-R7 | 功能描述:Keypads and Alarm Systems Interface 制造商:analog devices inc. 系列:- 包裝:- 零件狀態(tài):上次購買時間 應用:鍵盤和警報系統(tǒng) 接口:I2C 電壓 - 電源:1.8 V ~ 3 V 封裝/外殼:- 供應商器件封裝:- 安裝類型:- 標準包裝:1 |
| ADP5589ACBZ-00-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:* 特色產品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| ADP5589ACBZ-01-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:* 特色產品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
| ADP5589ACBZ-02-R7 | 功能描述:IC PORT EXPANDER 19I/O 25WLSCP RoHS:是 類別:集成電路 (IC) >> 接口 - 專用 系列:* 特色產品:NXP - I2C Interface 標準包裝:1 系列:- 應用:2 通道 I²C 多路復用器 接口:I²C，SM 總線 電源電壓:2.3 V ~ 5.5 V 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:16-TSSOP 包裝:剪切帶 (CT) 安裝類型:表面貼裝 產品目錄頁面:825 (CN2011-ZH PDF) 其它名稱:568-1854-1 |
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