m66271fp Renesas Electronics Corporation., m66271fp Datasheet - Page 24

• Manufacturer Part Number: m66271fp
• Description: Operation Panel Controller
• Manufacturer: Renesas Electronics Corporation.

M66271FP
(3) Write to VRAM (RD = "H")
(4) Read from VRAM (LWR, HWR = "H")
Note: 2. Writing/Reading operation for VRAM during non cycle steal access is performed during overlapping MCS
REJ03F0267-0200 Rev.2.00 Mar 18, 2008
Page 24 of 27
(D <15:0>)
(D <15:0>)
A <13:0>
A <13:0>
Term of non cycle steal access
Term of non cycle steal access
(+HWR)
D <7:0>
(+BHE)
D <7:0>
WAIT
MCS
WAIT
LWR
and [LWR (+HWR) or RD].
Limits of MCS, LWR (+HWR) and RD are prescribed by the input signal of last change to "L" in starting
access, and by the input signal of first change to "H" in ending access.
MCS
RD
tsu (A-MCS)
tsu (A-MCS)
tsu (D-MCS)
tsu (A-WR)
tsu (A-RD)
tsu (D-WR)
ta (RD-D)
ta (MCS-D)
Data input is established
Address is established
Address is established
tw (MCS)
tw (WR)
Data output is established
tdis (RD-D)
th
th (WR-D)
th (RD-A)
(WR-A)
th (MCS-D)
tdis (MCS-D)
th
th (MCS-A)
(MCS-A)
"H"
"H"