HD6432633 Datasheet, PDF (997/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

A18–A0
CE
Memory read mode
Address stable
Other mode command write
t_nxtc
t_ces
t_ceh
OE
WE
I/O7–I/O0
t_wep
t_f
t_r
t_ds
t_dh
Note: Do not enable WE and OE at the same time.
Figure 22-20 Timing Waveforms in Transition from Memory Read Mode to Another Mode
Table 22-18 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
Access time
CE output delay time
OE output delay time
Output disable delay time
Data output hold time
Symbol
t _acc
t _ce
t _oe
t _df
t _oh
Min
Max
Unit
—
20
µs
—
150
ns
—
150
ns
—
100
ns
5
—
ns
A18–A0
Address stable
Address stable
CE V_IL
OE V_IL
WE V_IH
t_acc
I/O7–I/O0
t_acc
t_oh
t_oh
Figure 22-21 CE and OE Enable State Read Timing Waveforms
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