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參數(shù)資料
| 型號： | 3802 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | TRANS PREBIASED NPN 200MW SOT-23 |
| 中文描述： | 單芯片8位CMOS微機 |
| 文件頁數(shù)： | 32/51頁 |
| 文件大?。?/td> | 692K |
| 代理商： | 3802 |
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MITSUBISHI MICROCOMPUTERS
3802 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
32
Bus control with memory expansion
The 3802 group has a built-in ONW function to facilitate access to
external memory and I/O devices in memory expansion mode or
microprocessor mode.
If an “L” level signal is input to the ONW pin when the CPU is in a
read or write state, the corresponding read or write cycle is ex-
tended by one cycle of
φ
. During this extended period, the RD or
WR signal remains at “L”. This extension period is valid only for
writing to and reading from addresses 0000
16
to 0007
16
and
0440
16
to FFFF
16
in microprocessor mode, 0440
16
to YYYY
16
in
memory expansion mode, and only read and write cycles are ex-
tended.
Fig. 34 ONW function timing
φ
Read cycle
Write cycle
Dummy cycle Write cycle
Read cycle Dummy cycle
AD
15
to AD
0
Period during which ONW input signal is received
During this period, the ONW signal must be fixed at either “H” or “L”. At all other times, the input level of the ONW
signal has no affect on operations.
The bus cycles is not extended for an address in the area 0008
16
to 043F
regardless of whether the ONW signal
is received.
8
:
8
8
8
ONW
WR
RD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 3802_M | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES |
| 38020 | 功能描述:DIN導(dǎo)軌式接線端子 1poledistiblock,250A IN 1 RoHS:否 制造商:Phoenix Contact 類型:Feed Through Modular Terminal Block 位置/觸點數(shù)量:1 線規(guī)量程:26-14 電流額定值:5 A, 15 A 電壓額定值:300 V, 600 V 安裝風(fēng)格: 端接類型:Push-In |
| 38-020 | 功能描述:SET 3/8DR 6PT 20MM 制造商:apex tool group 系列:* 零件狀態(tài):在售 標準包裝:1 |
| 380200 | 制造商:Weidmuller 功能描述:TB14, ENCLOSURE,4GP,ST, ZINC -EA - Bulk |
| 380-200 | 制造商:Circuit Test 功能描述:TEST LEADS - MEDIUM CLIP PKG/10 (2 EACH - 5 C |
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