參數(shù)資料
型號(hào)： LM78CCVF
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 模擬信號(hào)調(diào)理
英文描述： Microprocessor System Hardware Monitor
中文描述： SPECIALTY ANALOG CIRCUIT, PQFP44
封裝： PLASTIC, QFP-44
文件頁(yè)數(shù)： 8/31頁(yè)
文件大?。?/td> 424K
代理商： LM78CCVF
AC Electrical Characteristics
(Note 13) The following specifications apply for +4.25 V
DC
≤
V
CC
≤
+5.75 V
DC
unless otherwise specified.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C. (Continued)
Symbol
Parameter
Conditions
Typical
(Note 8)
Limits
(Note 9)
Units
(Limits)
ISA READ TIMING
t
SDRD
(setup)
t
SDRD
(hold)
t
RD
(setup)
t
RS
(delay)
Data Valid to IORD Inactive
IORD Inactive to Data Invalid
IORD Active to Rising Edge of SYSCLK
Rising Edge of SYSCLK number 1 to Data
Valid
120
5
20
360
ns (min)
ns (min)
ns (min)
ns (max)
With 8.33
MHz
SYSCLK
DS012873-5
The delay between consecutive IORD and IOWR pulses should be greater than 50 ns to ensure that an Power-on reset does not
occur unintentionally. (See
Section 3.2
‘Resets’ )
FIGURE 2. ISA Bus Read Timing Diagram
L
www.national.com
8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM78CCVF-J 制造商:National Semiconductor Corporation 功能描述:Data Acquisition System, 7 Channel, 8 Bit, 44 Pin, Plastic, QFP 制造商:Texas Instruments 功能描述:Data Acquisition System, 7 Channel, 8 Bit, 44 Pin, Plastic, QFP
LM78D05A 制造商:CYSTEKEC 制造商全稱(chēng):Cystech Electonics Corp. 功能描述:Three Terminal Positive Voltage Regulators
LM78D05AJ3 制造商:CYSTEKEC 制造商全稱(chēng):Cystech Electonics Corp. 功能描述:Three Terminal Positive Voltage Regulators
LM78D05B 制造商:CYSTEKEC 制造商全稱(chēng):Cystech Electonics Corp. 功能描述:Three Terminal Positive Voltage Regulators
LM78D05BJ3 制造商:CYSTEKEC 制造商全稱(chēng):Cystech Electonics Corp. 功能描述:Three Terminal Positive Voltage Regulators
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