Datasheet > ADP5587ACPZ-1-R7

ADP5587ACPZ-1-R7

更新时间： 2024-02-05 13:23:28

品牌	Logo	应用领域
亚德诺 - ADI		外围集成电路
页数	文件大小	规格书
24页	325K
描述
Mobile I/O Expander and QWERTY Keypad Controller

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ADP5587ACPZ-1-R7 技术参数

Source Url Status Check Date：	2013-05-01 14:56:47.102	是否无铅：	含铅
是否Rohs认证：	符合	生命周期：	Active
包装说明：	HVQCCN, LCC24,.16SQ,20	针数：	24
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.75
JESD-30 代码：	S-XQCC-N24	JESD-609代码：	e3
长度：	4 mm	湿度敏感等级：	3
位数：	18	I/O 线路数量：	18
端口数量：	2	端子数量：	24
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	UNSPECIFIED	封装代码：	HVQCCN
封装等效代码：	LCC24,.16SQ,20	封装形状：	SQUARE
封装形式：	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	峰值回流温度（摄氏度）：	260
电源：	1.8/3.3 V	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Parallel IO Ports
最大供电电压：	3.6 V	最小供电电压：	1.65 V
标称供电电压：	1.8 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	NO LEAD
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	30	宽度：	4 mm
uPs/uCs/外围集成电路类型：	PARALLEL IO PORT, GENERAL PURPOSE	Base Number Matches：	1

ADP5587ACPZ-1-R7 数据手册

Mobile I/O Expander and

QWERTY Keypad Controller

ADP5587

Data Sheet

FEATURES

FUNCTIONAL BLOCK DIAGRAM

18-GPIO port expander or 10 × 8 keypad matrix

GPIOs configurable as GPIs, GPOs, and keypad rows or

columns

ADP5587

GND

I²C interface with auto-increment

1.65 V to 3.6 V operation

SCL

SDA

RST

INT

Keypad lock capability

Open-drain interrupt output

Key press and key release interrupts

GPI interrupt with level programmability

Programmable pull-ups

CONTROL

REGISTERS

CONTROL

INTERFACE

Key event counter with overflow interrupt

275 μs debounce on the reset line and GPIs

1 μA typical idle current

10 11 12 13 14 15 16

Figure 1.

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

GENERAL DESCRIPTION

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).

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.

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

ADP5587 ICs to operate on the same I²C bus (see the Ordering

Guide).

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.

Rev. D

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

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