HD6432633 Datasheet, PDF (996/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

A18–A0
CE
Command write
t_ces
t_ceh
t_nxtc
Memory read mode
Address stable
OE
WE
I/O7–I/O0
t_wep
t_f
t_r
t_ds
t_dh
Note: Data is latched on the rising edge of WE.
Figure 22-19 Timing Waveforms for Memory Read after Memory Write
Table 22-17 AC Characteristics in Transition from Memory Read Mode to Another Mode
(Conditions: V_CC = 3.3 V ±0.3 V, V_SS = 0 V, T_a = 25°C ±5°C)
Item
Command write cycle
CE hold time
CE setup time
Data hold time
Data setup time
Write pulse width
WE rise time
WE fall time
Symbol
t _nxtc
t _ceh
t _ces
t _dh
t _ds
t _wep
t_r
t_f
Min
Max
Unit
20
—
µs
0
—
ns
0
—
ns
50
—
ns
50
—
ns
70
—
ns
—
30
ns
—
30
ns
942