參數(shù)資料
型號(hào): 784217AY
廠商: NEC Corp.
英文描述: MOS INTEGRATED CIRCUIT
中文描述: 馬鞍山集成電路
文件頁(yè)數(shù): 59/100頁(yè)
文件大?。?/td> 564K
代理商: 784217AY
Data Sheet U14121EJ2V0DS00
59
μ
PD784214A, 784215A, 784216A, 784217A, 784218A, 784214AY, 784215AY, 784216AY, 784217AY, 784218AY
www.DataSheet4U.com
9.1 Memory Expansion
External program memory and data memory can be connected in two stages: 256 KB and 1 MB.
To connect the external memory, ports 4 through 6 and port 8 are used.
The external memory can be connected in the following two modes:
Multiplexed bus mode: The external memory is connected by using a time-division address/data bus. The
number of ports used when the external memory is connected can be reduced in this
mode.
Separate bus mode:
The external memory is connected by using an address bus and data bus independent
of each other. Because an external latch circuit is not necessary, this mode is useful for
reducing the number of components and mounting area on the printed wiring board.
9.2 Programmable Wait
Wait state(s) can be inserted to the memory space (00000H to FFFFFH) while the RD and WR signals are active.
In addition, there is an address wait function that extends the active period of the ASTB signal to gain the address
decode time.
相關(guān)PDF資料
PDF描述
784218AY MOS INTEGRATED CIRCUIT
7846ARPFB 16-Bit Digital to Analog Converter
7846ARPFE 16-Bit Digital to Analog Converter
7846A 16-Bit Digital to Analog Converter
7846ARPFI 16-Bit Digital to Analog Converter
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
784218A 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT
784218AY 制造商:NEC 制造商全稱:NEC 功能描述:MOS INTEGRATED CIRCUIT
78423 SL001 功能描述:20 Conductor Multi-Conductor Cable Slate 24 AWG Foil, Braid 1000' (304.80m) 制造商:alpha wire 系列:EcoCable? Mini 零件狀態(tài):有效 電纜類型:多芯 導(dǎo)體數(shù):20 線規(guī):24 AWG 導(dǎo)線股數(shù):19/36 導(dǎo)體材料:銅,鍍錫 護(hù)套(絕緣)材料:聚苯醚(PPE) 護(hù)套(絕緣)直徑:0.269"(6.83mm) 屏蔽類型:箔,編織線 長(zhǎng)度:1000'(304.80m) 套管顏色:瓦色 等級(jí):ISO 10993,UL 式 21460 特性:生物相容性,加蔽線,拉繩 電壓:300V 工作溫度:-40°C ~ 80°C 使用:- 導(dǎo)體絕緣:聚苯醚(PPE) 護(hù)套(絕緣)厚度:0.015"(0.39mm) 屏蔽材料:Suprashield?;銅,鍍錫 屏蔽范圍:1 標(biāo)準(zhǔn)包裝:1
78423 SL005 功能描述:20 Conductor Multi-Conductor Cable Slate 24 AWG Foil, Braid 100.0' (30.5m) 制造商:alpha wire 系列:EcoCable? Mini 零件狀態(tài):有效 電纜類型:多芯 導(dǎo)體數(shù):20 線規(guī):24 AWG 導(dǎo)線股數(shù):19/36 導(dǎo)體材料:銅,鍍錫 護(hù)套(絕緣)材料:聚苯醚(PPE) 護(hù)套(絕緣)直徑:0.269"(6.83mm) 屏蔽類型:箔,編織線 長(zhǎng)度:100.0'(30.5m) 套管顏色:瓦色 等級(jí):ISO 10993,UL 式 21460 特性:生物相容性,加蔽線,拉繩 電壓:300V 工作溫度:-40°C ~ 80°C 使用:- 導(dǎo)體絕緣:聚苯醚(PPE) 護(hù)套(絕緣)厚度:0.015"(0.39mm) 屏蔽材料:Suprashield?;銅,鍍錫 屏蔽范圍:1 標(biāo)準(zhǔn)包裝:1
784233 制造商:Belden Inc 功能描述: