参数资料
型号: ADP5589ACPZ-00-R7
厂商: Analog Devices Inc
文件页数: 5/52页
文件大小: 0K
描述: IC KEY DECODER 19I/O EXP 24LFCSP
标准包装: 1,500
应用: 小键盘输入,输入/输出扩展
接口: I²C
电源电压: 1.65 V ~ 3.6 V
封装/外壳: 24-WFQFN 裸露焊盘,CSP
供应商设备封装: 24-LFCSP-WQ(3.5x3.5)
包装: 带卷 (TR)
安装类型: 表面贴装
Data Sheet
ADP5589
Rev. B | Page 13 of 52
When full unlock is achieved, FIFO and event count updates
resume. Note that if a key press is used as the second unlock
event, the release of that key is captured on the FIFO after
unlocking is completed.
The ADP5589 features an unlock timer, UNLOCK_TIMER[2:0]
(0x36[2:0]). When enabled, after the first unlock event occurs,
the unlock timer begins counting, and the second unlock event
must occur before the unlock timer expires. If the unlock timer
expires, the first unlock event must occur again to restart the
unlock process. Figure 15 shows a simple state diagram of the
unlocking process.
NO
FIRST
UNLOCK
EVENT?
UNLOCK
TIMER
ENABLED?
SECOND
UNLOCK EVENT
REQUIRED?
START UNLOCK TIMER
UNLOCK
TIMER
EXPIRED?
UNLOCK
YES
NO
YES
SECOND
UNLOCK EVENT?
NO
YES
LOCKED
NO
YES
LOCK_STAT = 0
LOCK_STAT = 1
EVENT
DETECTED?
YES
NO
EVENT
DETECTED?
YES
NO
EVENT
DETECTED?
NO
09714-
014
Figure 15. State Diagram of Unlocking Process
When lock mode is enabled, no EVENT_INT interrupts can be
generated until the unlock events occur.
The ADP5589 features an interrupt mask timer, INT_MASK_
TIMER[4:0] (0x36[7:3]). When this timer and lock mode are
enabled, a single EVENT_INT is generated if any key is pressed
or any GPI (programmed to update the FIFO) is active. When
the EVENT_INT is generated, the mask timer begins counting.
No additional EVENT_INT interrupts are generated until
the mask timer expires and a new key is pressed or any GPI
(programmed to update the FIFO) is active, unless the unlock
events occur, in which case, normal operation is resumed.
Allowing a single EVENT_INT interrupt is useful to alert the
processor to turn on its screen and display an unlock message
to the user. Blanking out additional key presses ensures that the
processor is not unnecessarily interrupted until the unlock
events occur. Figure 16 shows the unlock sequence when the
interrupt mask timer is enabled.
相关PDF资料
PDF描述
ADSP-2104BPZ-80 IC DSP CONTROLLER 16BIT 68PLCC
ADSP-21060LCW-160 IC DSP CONTROLLER 32BIT 240CQFP
ADSP-21061KS-200 IC DSP CONTROLLER 32BIT 240MQFP
ADSP-21065LCCA-240 IC DSP CTLR 32BIT 196CSPBGA
ADSP-2111BG-80 IC DSP CONTROLLER 16BIT 100PGA
相关代理商/技术参数
参数描述
ADP5589ACPZ-01-R7 功能描述:IC KEY DECODER 19I/O EXP 24LFCSP 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
ADP5589ACPZ-02-R7 功能描述:IC KEY DECODER 19I/O EXP 24LFCSP 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
ADP5589CP-EVALZ 功能描述:BOARD EVAL ADP5589ACPZ RoHS:是 类别:编程器,开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理,热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板,CD,电源
ADP-5DB 制造商:Delta Power 功能描述:
ADP-5DB-A 制造商:Delta Electronics Inc 功能描述: