欢迎访问ic37.com |
会员登录 免费注册
发布采购

X28C256J 参数 Datasheet PDF下载

X28C256J图片预览
型号: X28C256J
PDF下载: 下载PDF文件 查看货源
内容描述: 5伏,可变的字节E2PROM [5 Volt, Byte Alterable E2PROM]
分类和应用: 存储内存集成电路可编程只读存储器电动程控只读存储器电可擦编程只读存储器
文件页数/大小: 24 页 / 114 K
品牌: XICOR [ XICOR INC. ]
 浏览型号X28C256J的Datasheet PDF文件第1页浏览型号X28C256J的Datasheet PDF文件第2页浏览型号X28C256J的Datasheet PDF文件第3页浏览型号X28C256J的Datasheet PDF文件第5页浏览型号X28C256J的Datasheet PDF文件第6页浏览型号X28C256J的Datasheet PDF文件第7页浏览型号X28C256J的Datasheet PDF文件第8页浏览型号X28C256J的Datasheet PDF文件第9页  
X28C256
DATA
POLLING I/O
7
Figure 2.
DATA
Polling Bus Sequence
LAST
WRITE
WE
CE
OE
VIH
I/O7
HIGH Z
VOL
An
An
An
An
An
An
An
3855 FHD F12
VOH
X28C256
READY
A0–A14
Figure 3.
DATA
Polling Software Flow
DATA
Polling can effectively halve the time for writing to
the X28C256. The timing diagram in Figure 2 illustrates
the sequence of events on the bus. The software flow
diagram in Figure 3 illustrates one method of implement-
ing the routine.
WRITE DATA
WRITES
COMPLETE?
YES
SAVE LAST DATA
AND ADDRESS
NO
READ LAST
ADDRESS
IO7
COMPARE?
YES
X28C256
READY
NO
3855 FHD F13
4