參數(shù)資料
型號(hào)： XR82C684J
廠商： EXAR CORP
元件分類： 微控制器/微處理器
英文描述： CMOS QUAD CHANNEL UART (QUART)
中文描述： 4 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC68
封裝： PLASTIC, LCC-68
文件頁(yè)數(shù)： 14/107頁(yè)
文件大?。?/td> 2244K
代理商： XR82C684J
XR82C684
@
AC ELECTRICAL CHARACTERISTICS
1, 2, 3
(CONT’D)
Symbol
Parameter
Min.
Typ.
Max.
Unit
Conditions
Receiver Timing XR82C684 (
Figure 66
)
8
8! ! ( 8
5" ;(,
@
%
8;
8! ! ; ( * 8
5" ;(,
%
Notes
1
Parameters are valid over the specified temperature and operating supply ranges. Typical values are 25 C, V
CC
= 5V and typical
processing parameters.
2
Allvoltagesarereferencedtoground(GND). Fortesting,inputsignallevelsare0.4Vand2.4Vwithatransitiontimeof20nsmaxi-
mum. All time measurements are referenced at input voltages of 0.8V and 2.0V as appropriate. See Figure 50.
3
AC test conditions for outputs: CL = 50 pF, RL = 2.7 kohm to V
CC
.
4
If -CS is used as the strobing input, this parameter defines the minimum high time between -CSs.
5
Consecutive write operations to the same register require at least three edges of the X1 clock between writes.
6
Thisspecificationimposesa6MHzmaximum68000clockfrequencyifareadorwritecyclefollowsimmediatelyaftertheprevious
read or write cycle. A higher 68000 clock can be used if this is not the case.
7
This specification imposes a lower bound on -CS and -IACK low, guaranteeing that they will be low for at least one CLK period.
8
Thisparameterisspecifiedonlytoinsurethat-DTACKisassertedwithrespecttotherisingedgeofX1/CLKas shownin thetiming
diagram,nottoguaranteeoperationofthepart. Ifthespecifiedsetuptimeisviolated,-DTACKmaybeassertedasshownormaybe
asserted one clock cycle later.
9
Theminimumhightimemustbeatleast1.5timestheX1/CLKperiodandtheminimumlowtimemustbeatleastequaltotheX1/CLK
period if either channel’s Receiver is operating in external 1X clock mode.
ABSOLUTE MAXIMUM RATINGS
1
! & > ,
B>
,
.9
9
> ,% 3( %' 2
9> NB>
Notes
1
StressesabovethoselistedundertheAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice. Thisisastressrat-
ingonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsabovethoseindicatedinthe“ElectricalCharacteris-
tics” section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XR82C684J/44 制造商:EXAR 制造商全稱:EXAR 功能描述:CMOS QUAD CHANNEL UART (QUART)
XR82C684J/44-F 功能描述:UART 接口集成電路 Quad Channel UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR82C684J-F 功能描述:UART 接口集成電路 Quad Channel UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR82C684JTR/44-F 功能描述:UART 接口集成電路 Quad Channel UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
XR82C684JTR-F 功能描述:UART 接口集成電路 Quad Channel UART RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 數(shù)據(jù)速率:3 Mbps 電源電壓-最大:3.6 V 電源電壓-最小:2.7 V 電源電流:20 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LQFP-48 封裝:Reel
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