D12320VF25V Datasheet, PDF (816/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Table 17.66 AC Characteristics in Transition from Memory Read Mode to Others
Condition: V_CC = 3.3 V ± 0.3 V, V_SS = 0 V, T_a = 25˚C ± 5˚C
Code
Command write cycle
CE hold time
CE setup time
Data hold time
Data setup time
Programming pulse width
WE rise time
WE fall time
Symbol
tnxtc
tceh
tces
tdh
tds
twep
tr
tf
Min
20
0
0
50
50
70
—
—
Max
Unit
—
μs
—
ns
—
ns
—
ns
—
ns
—
ns
30
ns
30
ns
A18-0
CE
OE
WE
I/O7-0
Memory Read Mode
Address Stable
Other Mode Command Write
t_nxtc
t_ces
t_ceh
t_wep
tf
tr
t_ds
t_dh
Note : WE and OE should not be enabled simultaneously.
Figure 17.89 Timing at Transition from Memory Read Mode to Other Modes
Rev.7.00 Feb. 14, 2007 page 782 of 1108
REJ09B0089-0700