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ADP5585ACPZ-03-R7 PDF预览

ADP5585ACPZ-03-R7

更新时间: 2024-11-05 12:34:19
品牌 Logo 应用领域
亚德诺 - ADI 解码器电信集成电路电信电路
页数 文件大小 规格书
40页 605K
描述
Keypad Decoder and I/O Expansion

ADP5585ACPZ-03-R7 数据手册

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Keypad Decoder and I/O Expansion  
Data Sheet  
ADP5585  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
VDD  
GND  
16-element FIFO for event recording  
10 configurable I/Os allowing functions such as  
Key pad decoding for a matrix of up to 5 × 5  
11 GPIOs (5 × 6) with ADP5585ACxZ-01-R7 models  
Key press/release interrupts  
ADP5585  
UVLO  
POR  
OSCILLATOR  
RST/R5  
SDA  
SCL  
2
I C INTERFACE  
GPIO functions  
INT  
GPI with selectable interrupt level  
100 kΩ or 300 kΩ pull-up resistors  
300 kΩ pull-down resistors  
GPO with push-pull or open-drain  
Programmable logic block  
PWM generator  
Internal PWM generation  
External PWM with internal PWM AND function  
Reset generators  
I2C interface with fast mode plus (Fm+) support of up to 1 MHz  
Open-drain interrupt output  
KEY SCAN  
R0  
R1  
R2  
R3  
R4  
C0  
C1  
C2  
C3  
C4  
AND  
DECODE  
GPI SCAN  
AND  
DECODE  
REGISTERS  
I/O  
CONFIG  
LOGIC  
PWM  
RESET1  
GEN  
RESET2  
GEN  
16-ball WLCSP, 1.59 mm × 1.59 mm  
16-lead LFCSP, 3 mm × 3 mm  
Figure 1.  
APPLICATIONS  
Keypad entries and input/output expansion capabilities  
Smart phones, remote controls, and cameras  
Healthcare, industrial, and instrumentation  
GENERAL DESCRIPTION  
The ADP5585 is a 10 input/output port expander with a built in  
keypad matrix decoder, programmable logic, reset generator, and  
PWM generator. Input/output expander ICs are used in portable  
devices (phones, remote controls, and cameras) and nonportable  
applications (healthcare, industrial, and instrumentation). I/O  
expanders can be used to increase the number of I/Os available  
to a processor or to reduce the number of I/Os required through  
interface connectors for front panel designs.  
as events via the FIFO, eliminating the need to monitor different  
registers for event changes. The ADP5585 is equipped with a  
FIFO to store up to 16 events. Events can be read back by the  
processor via an I2C-compatible interface.  
The ADP5585 frees up the main processor from having to  
monitor the keypad, thereby reducing power consumption  
and/or increasing processor bandwidth for performing other  
functions.  
The ADP5585 handles all key scanning and decoding and can  
flag the main processor via an interrupt line that new key events  
have occurred. GPI changes and logic changes can also be tracked  
The programmable logic functions allow common logic require-  
ments to be integrated as part of the GPIO expander, thus saving  
board area and cost.  
Rev. C  
Document Feedback  
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 ©2011–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

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