參數(shù)資料
型號: ATJ2073
廠商: Electronic Theatre Controls, Inc.
英文描述: The ATJ2073 is a single-chip highly-intergrated digital music system solution for devices such as dedicated audio players, PDAs, and cell phones
中文描述: 在ATJ2073是一種單芯片高intergrated數(shù)字音樂的設(shè)備系統(tǒng),如專用的音頻播放器,PDA和手機解決方案
文件頁數(shù): 28/45頁
文件大?。?/td> 690K
代理商: ATJ2073
ATJ2073
Data Sheet
Page 28 of 45
Actions Semiconductor Co.,LTD
JP 8003
VBAT
VDD
VCC
LOSC
POR
MCU
6.2 Key Matrix Scan
When key scan circuit is enabled, ATJ2073 will scan the keyboard periodly. It drives pin KEYOUTn
[n=0…7] low pulse in turn . When a key is pressed, pin KEYINn connecting the key will be found low
level.
There are 12 internal 8-bit registers for key value latch per scan. But only another one register (Key Scan
Data Register ) for MCU to access key value . Those 12 internal registers are mapped into this register, and
an internal pointer is used to point to the current register to return scan data when read. Any IO write to this
register will clear the internal register, and the pointer will increase by 1 and point to the next register after
read is performed.
相關(guān)PDF資料
PDF描述
ATJ2075 MP3/WMA Decoder with Drive-less USB Interface and Voice Record
ATJ2085 ATJ2085 is a single-chip for flash-based digital music player
ATS-428 ADSL TRANSFORMER
AU9510F AU9510F USB Smart Card Reader Controller Technical Reference Manual
AV3168 Video Encoder
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ATJ2075 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MP3/WMA Decoder with Drive-less USB Interface and Voice Record
ATJ2085 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ATJ2085 is a single-chip for flash-based digital music player
ATJG523VTR 功能描述:觸覺開關(guān) SW TACT SPST 0.05A 12VDC RoHS:否 制造商:C&K Components 工作力:2 N 執(zhí)行器:Round 電流額定值:50 mA 電壓額定值 DC:32 V 電壓額定值 AC: 功率額定值:1 VA 接地端子:Yes 觸點形式:SPST-NO 開關(guān)功能: 安裝風格:SMD/SMT 安裝方向:Right 晶體管管座高度: 顏色: 照明:Not Illuminated 照明顏色: 封裝:
ATJG524VTR 功能描述:觸覺開關(guān) SW TACT SPST 0.05A 12VDC RoHS:否 制造商:C&K Components 工作力:2 N 執(zhí)行器:Round 電流額定值:50 mA 電壓額定值 DC:32 V 電壓額定值 AC: 功率額定值:1 VA 接地端子:Yes 觸點形式:SPST-NO 開關(guān)功能: 安裝風格:SMD/SMT 安裝方向:Right 晶體管管座高度: 顏色: 照明:Not Illuminated 照明顏色: 封裝:
ATJG533VTR 功能描述:觸覺開關(guān) SW TACT SPST 0.05A 12VDC RoHS:否 制造商:C&K Components 工作力:2 N 執(zhí)行器:Round 電流額定值:50 mA 電壓額定值 DC:32 V 電壓額定值 AC: 功率額定值:1 VA 接地端子:Yes 觸點形式:SPST-NO 開關(guān)功能: 安裝風格:SMD/SMT 安裝方向:Right 晶體管管座高度: 顏色: 照明:Not Illuminated 照明顏色: 封裝: