HD66740 Datasheet, PDF (87/95 Pages) Hitachi Semiconductor – 112 x 80-dot Graphics LCD Controller/Driver

80-system Bus Operation
HD66740
RS
CS*
WR*
RD*
DB0
to DB7
DB0
to DB7
V IH
V IH
V IL
V IL
tAS
tAH
VIH
VIL
PW LW,
PW
*1
LR
PWHW PWHR
VIH
VIH
VIH
V IL
t WRr
V IL
t WRf
tCYCW, tCYCR
tDSW
tHWR
VIH _{Write data} VIH
V IL
V IL
tDDR
tDHR
V OH1
V OL1
Read data
V OH1
V OL1
Note 1: PWLW and PWLR are specified in the overlapped period when CS* is low or WR* or RD* is low.
Figure 48 80-system Bus Timing
87