參數(shù)資料
型號： M38000S8-XXXFS
廠商： Mitsubishi Electric Corporation
英文描述： 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
中文描述： 8位單片機(jī)
文件頁數(shù)： 44/173頁
文件大?。?/td> 4203K
代理商： M38000S8-XXXFS
1-30
HARDWARE
3800 GROUP USER’S MANUAL
Bus control with memory expansion
The 3800 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, 0040
16
to YYYY
16
in
memory expansion mode, and only read and write cycles are ex-
tended.
Fig. 30 ONW function timing
FUNCTIONAL DESCRIPTION
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
16,
regardless of whether the ONW signal
is received.
8
:
8
8
8
ONW
WR
RD
相關(guān)PDF資料
PDF描述
M38000S8-XXXHP 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
M38000S8-XXXSP 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
M38000S8-XXXSS 16 Characters x 2 Lines, 5x7 Dot Matrix Character and Cursor
M38001E7-XXXHP 1 watt dc-dc converters
M38001E7-XXXSP 1 watt dc-dc converters
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M38000S8-XXXHP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER
M38000S8-XXXSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER
M38000S8-XXXSS 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:8-BIT SINGLE-CHIP MICROCOMPUTER
M38000T2-CPE 功能描述:EMULATOR BASE UNIT 740 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 內(nèi)電路編程器、仿真器以及調(diào)試器 系列:- 產(chǎn)品變化通告:Development Systems Discontinuation 19/Jul/2010 標(biāo)準(zhǔn)包裝:1 系列:* 類型:* 適用于相關(guān)產(chǎn)品:* 所含物品:*
M38001E1-DXXXFP 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
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