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DP8238J PDF预览

DP8238J

更新时间: 2024-01-20 15:52:40
品牌 Logo 应用领域
美国国家半导体 - NSC 总线驱动器外围集成电路控制器
页数 文件大小 规格书
6页 140K
描述
System Controller and Bus Driver

DP8238J 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:DIP, DIP28,.6Reach Compliance Code:unknown
风险等级:5.92JESD-30 代码:R-PDIP-T28
JESD-609代码:e0端子数量:28
最高工作温度:70 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP28,.6封装形状:RECTANGULAR
封装形式:IN-LINE认证状态:Not Qualified
子类别:Other Microprocessor ICs表面贴装:NO
技术:BIPOLAR温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL

DP8238J 数据手册

 浏览型号DP8238J的Datasheet PDF文件第1页浏览型号DP8238J的Datasheet PDF文件第2页浏览型号DP8238J的Datasheet PDF文件第3页浏览型号DP8238J的Datasheet PDF文件第4页浏览型号DP8238J的Datasheet PDF文件第6页 
Functional Pin Definitions (Continued)  
tion between the CPU, memory, and input/output devices  
for instructions and data transfers. A status word (which de-  
scribes the current machine cycle) is also outputted on this  
data bus during the first microcycle of each machine cycle  
System Data (DB DB ) Bus: This bus comprises eight  
7 0  
TRI-STATE input/output lines that connect to the memory  
and input/output components of the system. The internal  
bidirectional bus driver isolates the DB DB Data Bus from  
7
0
e
(SYNC  
logic 1).  
the D D Data Bus.  
0
7
Status Word Chart  
Status  
Word  
Data Bus Bit  
Control  
Signal  
Machine Cycle  
D
7
D
6
D
D
4
D
3
D
D
1
D
0
5
2
Instruction Fetch  
Memory Read  
1
2
1
0
1
0
0
0
1
0
MEMR  
MEMR  
MEMW  
MEMR  
MEMW  
I/OR  
1
0
1
0
0
0
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
0
0
1
0
1
0
1
0
1
1
1
0
0
0
0
0
0
1
0
1
Memory Write  
3
Stack Read  
4
Stack Write  
5
Input Read  
6
Output Write  
7
I/OW  
Interrupt Acknowledge  
Halt Acknowledge  
Interrupt Acknowledge While Halt  
8
INTA  
9
(none)  
INTA  
10  
Block and Connection Diagrams  
Dual-In-Line Package  
TL/F/6825–7  
Order Number DP8228J, DP8228MJ,  
DP8228N, DP8238J, DP8238MJ or  
DP8238N  
TL/F/6825–6  
See NS Package Number J28A or N28B  
5

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