參數(shù)資料
型號(hào): X88C75
英文描述: Port Expander and E2 Memory
中文描述: 端口擴(kuò)展和E2內(nèi)存
文件頁(yè)數(shù): 4/27頁(yè)
文件大?。?/td> 125K
代理商: X88C75
X88C75 SLIC
E
2
4
Page Write Operation
Toggle Bit Polling
Because the X88C75 typical write timing is less than the
specified 5ms, Toggle Bit Polling has been provided to
determine the early completion of a write cycle. During
the internal programming cycle, I/O
6
will toggle from “1”
to “0” and “0” to “1” on subsequent attempts to read from
the memory plane that is being updated. When the
Figure 1. Toggle Bit Polling
internal cycle is complete, the toggling will cease and
the device will be accessible for additional read or write
operations. Due to the dual plane architecture, reads for
polling must occur from the plane that was written; that
is, the state of A
12
during a write must match the state
of A
12
during polling.
tBLC
CE
ALE
A/D0–A/D7
A8–A12
WR
PSEN(RD)
AIN
DIN
A12=n
OPERATION
BYTE 0
BYTE 1
BYTE 2
LAST BYTE
READ (1)(2)
AFTER tWC READY FOR
NEXT WRITE OPERATION
tWC
2887 ILL F04
AIN
DIN
A12=n
AIN
DIN
A12=n
AIN
DIN
A12=n
AIN
DOUT
A12=x
AIN
ADDR
AIN
Next Address
RD
LAST BYTE
WRITTEN
CE
ALE
A/D0–A/D7
A8–A12
WR
AIN
DIN
A12=n
OPERATION
AIN
DOUT
A12=n
AIN DOUT
A12=n
AIN
DOUT
A12=n
AIN
DOUT
A12=x
AIN
ADDR
I/O6=X
X88C75 READY FOR
NEXT OPERATION
2887 ILL F05
I/O6=X
I/O6=X
I/O6=X
相關(guān)PDF資料
PDF描述
X88C75J Port Expander and E2 Memory
X88C75JI Port Expander and E2 Memory
X88C75JM Port Expander and E2 Memory
X88C75L Port Expander and E2 Memory
X88C75LI Port Expander and E2 Memory
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
X88C75J 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75JI 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75JISLIC 制造商:Intersil Corporation 功能描述:I/O PORT, 44 Pin, Plastic, PLCC
X88C75JM 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory
X88C75L 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Port Expander and E2 Memory