D12320VF25V Datasheet, PDF (710/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Table 17.39 AC Characteristics in Memory Read Mode
Conditions: V_CC = 3.3 V ±0.3 V, V_SS = 0 V, T_a = 25°C ±5°C
Item
Symbol
Min
Access time
tacc
—
CE output delay time
tce
—
OE output delay time
toe
—
Output disable delay time
tdf
—
Data output hold time
toh
5
Max
20
150
150
100
—
Unit
μs
ns
ns
ns
ns
A₁₈ to A₀
Address stable
Address stable
CE _VIL
OE _VIL
WE
VIH
t_acc
t_acc
t_oh
t_oh
I/O₇ to I/O₀
Figure 17.54 Timing Waveforms for CE/OE Enable State Read
A₁₈ to A₀
CE
OE
WE VIH
I/O₇ to I/O₀
Address stable
t_ce
t_oe
Address stable
t_ce
t_oe
t_acc
t_acc
t_oh
t_df
t_oh ^tdf
Figure 17.55 Timing Waveforms for CE/OE Clocked Read
Rev.7.00 Feb. 14, 2007 page 676 of 1108
REJ09B0089-0700