D485505G NEC [NEC], D485505G Datasheet - Page 15

• Manufacturer Part Number: D485505G
• Description: LINE BUFFER 5K-WORD BY 8-BIT
• Manufacturer: NEC [NEC]

WCK/RCK
WCK/RCK
(Output)
(Output)
RSTW/
RSTW
(Input)
(Input)
(Input)
Remark RE, WE = “L” level
(Input)
Remark WE = “L” level
(Input)
(Input)
RSTR
RSTR
(Input)
(Input)
Write
Read
Write
Read
D
D
D
RE
D
OUT
OUT
IN
IN
t
t
t
t
RS
RS
t
t
WCW
RCW
WCW
RCW
Cycle 0
Cycle 0
t
t
t
t
t
t
WCK
RCK
WCK
RCK
RH
RH
t
t
t
t
t
t
DS
WCP
RCP
DS
WCP
RCP
High impedance
(0)
(0)
t
t
DH
DH
Cycle 1
Cycle 1
Figure 4.4 n-Bit Delay Line Timing Chart (2)
Figure 4.5 n-Bit Delay Line Timing Chart (3)
(1)
(1)
n Cycles
n Cycles
Cycle 2
Cycle 2
Data Sheet M10059EJ7V0DS00
t
t
WAR
WAR
(2)
(2)
(n–2)
(n–2)
Cycle n–1
Cycle n–1
t
REH
t
RS
(n–1)
(n–1)
t
REN2
Cycle n
Cycle 0
t
Cycle n
Cycle 0
RH
t
t
AC
AC
t
t
DS
DS
(n)
(n)
(0)
(0)
Cycle n+1 Cycle n+2 Cycle n+3
Cycle n+1 Cycle n+2 Cycle n+3
t
t
t
DH
OH
t
OH
Cycle 1
Cycle 1
DH
(n+1)
(n+1)
(1)
(1)
Cycle 2
Cycle 2
PD485505
(n+2)
(n+2)
Cycle 3
(2)
Cycle 3
(2)
(n+3)
(n+3)
15
(3)
(3)