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參數資料
| 型號： | ADP5587CP-EVALZ |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/24頁 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR ADP5587 |
| 標準包裝： | 1 |
| 主要目的： | 接口，GPIO 擴展器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADP5587 |
| 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 |
| 相關產品： | ADP5587ACBZ-R7DKR-ND - IC I/O EXPANDER/KEYBRD CTRLR ADP5587ACBZ-R7CT-ND - IC I/O EXPANDER/KEYBRD CTRLR ADP5587ACBZ-R7TR-ND - IC I/O EXPANDER/KEYBRD CTRLR ADP5587ACPZ-R7DKR-ND - IC EXPANDER/KEYBOARD CTRLR ADP5587ACPZ-R7CT-ND - IC EXPANDER/KEYBOARD CTRLR ADP5587ACPZ-R7TR-ND - IC EXPANDER/KEYBOARD CTRLR |
Mobile I/O Expander and
QWERTY Keypad Controller
Data Sheet
FEATURES
18-GPIO port expander or 10 × 8 keypad matrix
GPIOs configurable as GPIs, GPOs, and keypad rows or
columns
I2C interface with auto-increment
1.65 V to 3.6 V operation
Keypad lock capability
Open-drain interrupt output
Key press and key release interrupts
GPI interrupt with level programmability
Programmable pull-ups
Key event counter with overflow interrupt
275 μs debounce on the reset line and GPIs
1 μA typical idle current
55 μA typical polling current
4 mm × 4 mm LFCSP package
Small 2 mm x 2 mm WLCSP package, 0.4 mm pitch
Multiple I2C addresses available for the LFCSP package to
allow multiple port expanders on the same bus
APPLICATIONS
Keypad and I/O expander designed for QWERTY type phones
that require a large keypad matrix
FUNCTIONAL BLOCK DIAGRAM
18
17
19
21
23
22
20
24
CONTROL
REGISTERS
CONTROL
INTERFACE
R7
R6
R5
R4
R3
R2
R1
R0
C0
C1
C2
C3
C4
C5
C6
C7
C9
C8
GND
VCC
SCL
SDA
RST
INT
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
ADP5587
08612-
001
Figure 1.
GENERAL DESCRIPTION
The ADP5587 is an I/O port expander and keypad matrix
designed for QWERTY type phones that require a large keypad
matrix and expanded I/O lines. I/O expander ICs are used in
mobile platforms as a solution to the limited number of GPIOs
available in the main processor.
In its small 2 mm × 2 mm package, the ADP5587 contains
enough power to handle all key scanning and decoding and
to flag the processor of key presses and releases via the I2C
interface and interrupt. The ADP5587 frees the main micro-
processor from the need to monitor the keypad, thereby
minimizing current drain and increasing processor bandwidth.
The ADP5587 is also equipped with a buffer/FIFO and key
event counter to handle and keep track of up to 10 unprocessed
key or GPI events with overflow wrap and interrupt capability.
The ADP5587 has keypad lock capability with an option to
trigger or not trigger an interrupt at key presses and releases.
All communication to the main processor is done using one
interrupt line and two I2C-compatible interface lines. The
ADP5587 can be configured as a keypad matrix of up to 8 rows ×
10 columns (a maximum of 80 keys).
When the ADP5587 is used for smaller keypad matrices, unused
row and column pins can be reconfigured to act as general-
purpose inputs or outputs. R0 to R7 denote the row pins of the
matrix, whereas C0 to C9 denote the column pins. At power-up,
all rows and columns default to GPIs and must be programmed
to function as part of the keypad matrix or as GPOs.
Two options for I2C addresses exist for the LFCSP package to
reduce the chance of port contention and allow up to two
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2009-2012 Analog Devices, Inc. All rights reserved.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADP5588 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Keypad I/O Expander |
| ADP5588ACPZ-R7 | 功能描述:IC KEYPAD SCANNER GPIO PORT EXP 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 |
| ADP5588ACPZ-R7B2 | 功能描述:Keypads and Alarm Systems Interface 24-LFCSP-WQ (4x4) 制造商:analog devices inc. 系列:- 包裝:帶卷（TR） 零件狀態:上次購買時間 應用:鍵盤和警報系統 接口:I2C 電壓 - 電源:1.8 V ~ 3 V 封裝/外殼:24-WFQFN 裸露焊盤，CSP 供應商器件封裝:24-LFCSP-WQ（4x4） 安裝類型:表面貼裝 標準包裝:1 |
| ADP5588-EVALZ | 功能描述:BOARD EVAL ADP5588 KEYPAD/GPIO RoHS:是 類別:編程器，開發系統 >> 評估演示板和套件 系列:- 標準包裝: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 |
| 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:上次購買時間 應用:鍵盤和警報系統 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 |
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