m66255fp Renesas Electronics Corporation., m66255fp Datasheet - Page 7

• Manufacturer Part Number: m66255fp
• Description: 8192 ? 10-bit Line Memory Fifo
• Manufacturer: Renesas Electronics Corporation.

M66255FP
Matters that Needs Attention when WCK Stops
Input data of n cycle is read at the rising edge after WCK of n cycle and writing operation starts in the WCK low-level
period of n + 1 cycle. The writing operation is complete at the falling edge after n + 1 cycle.
To stop reading write data at n cycle, enter WCK before the rising edge after n + 1 cycle.
When the cycle next to n cycle is a disable cycle, WCK for a cycle requires to be entered after the disable cycle as well.
REJ03F0249-0200 Rev.2.00 Sep 14, 2007
Page 7 of 13
WCK
WE
Dn
n cycle
t
WCK
t
DS
Period for writing data (n)
into memory
(n)
t
n + 1 cycle
DH
n cycle
t
NWES
t
DS
Period for writing data (n)
into memory
(n)
t
DH
Disable cycle
WRES = "H"