D12320VF25V Datasheet, PDF (820/1146 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 17 ROM
Table 17.70 AC Characteristics Status Read Mode
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
OE output delay time
Disable delay time
CE output delay time
WE rise time
WE fall time
Symbol
tnxtc
tceh
tces
tdh
tds
twep
toe
tdf
tce
tr
tf
Min
20
0
0
50
50
70
—
—
—
—
—
Max
Unit
—
μs
—
ns
—
ns
—
ns
—
ns
—
ns
150
ns
100
ns
150
ns
30
ns
30
ns
A18-0
CE
t_ces
t_ceh t_nxtc t_ces
t_ceh t_nxtc
OE
t_wep
tf
tr
WE
I/O7-0
t_ds
t_dh
H'71
Note: I/O₃ and I/O₂ are undefined.
t_wep
tf
tr
t_ds
t_dh
H'71
t_ce
t_oe
Figure 17.94 Timing in Status Read Mode
Table 17.71 Stipulated Transition Times to Command Wait State
Code
Symbol
Min
Standby release (oscillation settling tosc1
30
time)
PROM mode setup time
VCC hold time
tbmv
10
tdwn
0
Max
—
—
—
t_nxtc
t_df
Unit
ms
ms
ms
Rev.7.00 Feb. 14, 2007 page 786 of 1108
REJ09B0089-0700